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Projects => Beginner Project => Topic started by: aron on October 09, 2003, 03:53:46 PM

Title: Please let me know if you have built this project
Post by: aron on October 09, 2003, 03:53:46 PM
Please post a message if you have succesfully built this project.

Thanks!
Title: Please let me know if you have built this project
Post by: al3151 on October 11, 2003, 10:56:57 AM
I've built it but its only gone as far as my breadboard.I tried it with different transistors(BC108c.5088,A18,C945...) and found a sound that I really liked with a tranny that said 1362 on it.Its a jangly kind of sound that I like with the gain set not quite to the max.The transistors I guess are low gain.I salvaged them from old stereos or something.
Title: Please let me know if you have built this project
Post by: sometimes_called_green on October 11, 2003, 11:15:47 AM
Hi Aron, i finished the board, and it sounds nice, the effect is quite subtle, but it definately adds lots of sustain when turned high and i really love that!!  :D
I only wish i hadn't discovered that one of my speakers blew up last time i used my amp :(
i tried to find a 3pdt, but they only had dpdt, i'll have to go back and buy what is needed to build a millenium bypass. for now, i just skipped all the sitwh thing. it seems so much simpler with a 3pdt.. Is there a simple way to sitch and led with a dpdt?(i know the millenium is not that hard, just asking..) I'll try to put the range control too.
i wanted to say thanks again Aron, this helped me a lot.
Dou you think i can look at the orange squeezer, or a booster with higher gain maybe? or should I do another very simple project (i already buildt the lpb)
Title: Please let me know if you have built this project
Post by: aron on October 11, 2003, 04:19:37 PM
Quote from: al3151
I've built it but its only gone as far as my breadboard.I tried it with different transistors(BC108c.5088,A18,C945...) and found a sound that I really liked with a tranny that said 1362 on it.Its a jangly kind of sound that I like with the gain set not quite to the max.The transistors I guess are low gain.I salvaged them from old stereos or something.


cOOL!
Title: Please let me know if you have built this project
Post by: aron on October 11, 2003, 04:23:24 PM
>Hi Aron, i finished the board, and it sounds nice, the effect is quite subtle, but it definately adds lots of sustain when turned high and i really love that!!

GREAT! I think you are the first one to create a perfboard! Congratulations!!!!!!!

>i tried to find a 3pdt, but they only had dpdt, i'll have to go back and buy what is needed to build a millenium bypass. for now, i just skipped all the sitwh thing. it seems so much simpler with a 3pdt..

Yes it is simpler with 3PDT

 Is there a simple way to sitch and led with a dpdt?(i know the millenium is not that hard, just asking..)

The millenium 1 is the easiest way.

> I'll try to put the range control too.
i wanted to say thanks again Aron, this helped me a lot.

No problem. Let me know if you need help with the range control.,

>Dou you think i can look at the orange squeezer, or a booster with higher gain maybe? or should I do another very simple project (i already buildt the lpb)>

Let me look for the next project which will be a distortion!

Aron
Title: Please let me know if you have built this project
Post by: BD13UK on October 12, 2003, 10:15:42 AM
Hi Aron,
Just wanted to say a big thank's for all your assistance for guy's like myself who are pretty much learners, I have to say I followed this project with great interest although I didn't actually build it however I have built the Hornet on perfboard and I'm really pleased with it as it sounds ten times better than a boutique model I paid quite a lot of money for on the ebay so it just shows that with help from yourself and all the other talented people around on the forum with a bit of effort it can be done. Thanks again Aron.
Title: Please let me know if you have built this project
Post by: aron on October 12, 2003, 05:59:17 PM
Thanks Brian!!!!!!

OK, I'm happy!  :D
Title: my second stripboard
Post by: hair force one on October 13, 2003, 04:15:58 AM
been stripboarding last week and the resulting lil' boosta sounds quite good (powered by 2n1711), next it needs a dpdt and it's own scrapmetal closer (i use a general purpose one for the tests), see it at:

 http://partouze.chez.tiscali.fr/stomp/emnpnboost.jpg

so, what's the next verse in Aaron's Trampling Your Own Effects Bible?
Title: Please let me know if you have built this project
Post by: aron on October 13, 2003, 06:02:47 AM
Quote
(i use a general purpose one for the tests), see it at:


Very nice!!!! YES!!!!   8)
Title: Please let me know if you have built this project
Post by: Ice9Rg570 on October 13, 2003, 11:14:38 PM
Quote from: aron
>Hi Aron, i finished the board, and it sounds nice, the effect is quite subtle, but it definately adds lots of sustain when turned high and i really love that!!

GREAT! I think you are the first one to create a perfboard! Congratulations!!!!!!!

>i tried to find a 3pdt, but they only had dpdt, i'll have to go back and buy what is needed to build a millenium bypass. for now, i just skipped all the sitwh thing. it seems so much simpler with a 3pdt..

Yes it is simpler with 3PDT

 Is there a simple way to sitch and led with a dpdt?(i know the millenium is not that hard, just asking..)

The millenium 1 is the easiest way.

> I'll try to put the range control too.
i wanted to say thanks again Aron, this helped me a lot.

No problem. Let me know if you need help with the range control.,

>Dou you think i can look at the orange squeezer, or a booster with higher gain maybe? or should I do another very simple project (i already buildt the lpb)>

Let me look for the next project which will be a distortion!

Aron


Would it be at all possible to build a ts808 for the next project?
Title: Please let me know if you have built this project
Post by: aron on October 14, 2003, 02:51:00 AM
>Would it be at all possible to build a ts808 for the next project?

The TS808 with input and output buffers is about the limit for a perfboard project.

I can definitely show you how to do it, but this would not be a good op amp beginner project.

I will keep this in mind for a future advanced project.
Title: Please let me know if you have built this project
Post by: Ice9Rg570 on October 14, 2003, 03:06:25 AM
Quote from: aron
>Would it be at all possible to build a ts808 for the next project?

The TS808 with input and output buffers is about the limit for a perfboard project.

I can definitely show you how to do it, but this would not be a good op amp beginner project.

I will keep this in mind for a future advanced project.

thanks!
Title: Please let me know if you have built this project
Post by: aron on October 14, 2003, 03:23:39 AM
BTW: The Son of Screamer (Jack Orman's "bare bones" TS-808") is a pretty good op amp circuit for an intermediate project.
Title: Please let me know if you have built this project
Post by: bwanasonic on October 14, 2003, 02:41:22 PM
Quote from: aron
The TS808 with input and output buffers is about the limit for a perfboard project.

I can definitely show you how to do it, but this would not be a good op amp beginner project.


I'm preparing to make an Orange Squeezer and I'm a bit apprehensive about that little eight-legged creature it uses. So far I have only built a few *one-knob-wonders* on perf with part counts I could count on my fingers.  I'll socket the IC, but I'm thinking I should get a finer tip for my iron.

Kerry M
Title: Please let me know if you have built this project
Post by: aron on October 14, 2003, 03:26:28 PM
The tip that I use is perfect. Check it out (if you haven't) in the parts post.

The weller soldering station I have is great and VERY low cost. I think I got it for around $40.
Title: absolute beginner's box
Post by: hair force one on October 16, 2003, 03:12:34 AM
made a box from a prepaint 0.8 mm sheetmetal yesterday. it's the "cut & fold" or Origami construction type. very simple, fast, rewarding and low cost (from "Junkyard Stores & Industries"!).
see it at:
 :arrow: http://partouze.chez.tiscali.fr/stomp/embuilt.jpg
I knowit's very rough design and it needs little painted letters on it.
Shall i make a "how i done it page" for those about to protect their beginner's boost?
-
-
Great alternate guitar bands->n°1->Melvins
Title: Please let me know if you have built this project
Post by: aron on October 16, 2003, 03:47:55 AM
VERY COOL!
Title: Please let me know if you have built this project
Post by: sometimes_called_green on October 16, 2003, 04:49:19 AM
Hi hair force,
i'd be interested in making this box! ..and in the page on how you made it.
it looks nice and sturdy.
do you think i could find the parts in europe?
Title: element of box
Post by: hair force one on October 16, 2003, 12:52:05 PM
sometimes-called-green :arrow: i'll try to make a "how to page" tonight or tomorrow (sounds like an official 'homepage').
It's only made of one element: an iron or alloy sheet of metal or as we say in french "une plaque de tôle".
Mine comes from building construction junkpiles (those prepaint pieces i use are from the outer skin of supermarkets, factory, depot buildings), but you can also use old computer boxes, microwave hoven or washing machine enclosures.
it shouldn't be more than 1,5mm and less than 0.8mm thick (less than that is a very flexible piece and more becomes hard to bend!).
The simple method i use easily permits the achievement of various designs: I made a copy of an Electro-Harmonix box for my LP2 and a big MoogerFooger-like for testing...
Title: Please let me know if you have built this project
Post by: hair force one on October 17, 2003, 03:57:56 AM
i'm just a simple boxmaker, come visit at:
http://partouze.chez.tiscali.fr/stomp/embuilt.jpg
check back to see more pics and features...
Title: Just Finished
Post by: Chris R on October 18, 2003, 10:47:58 AM
I built it up this morning... it's a cool like circuit.  It took just over an hour for me to put together.  I used a 2N3904 for the tranny.  I'd like to get a few others to test out.. but the 2N3904 sounds good.  

I think i might actually box this one up... I've got a bad habit of not boxing any of my builds ;)  I guess the lead time on ordering just turns me off.

Thanks aron.. the build pictorial was very cool.. and easy to follow.

C
Title: Re: Just Finished
Post by: aron on October 18, 2003, 04:41:32 PM
Quote from: Chris R
I built it up this morning... it's a cool like circuit.  It took just over an hour for me to put together.  I used a 2N3904 for the tranny.  I'd like to get a few others to test out.. but the 2N3904 sounds good.  


Thanks Chris!!!!!

Quote
he build pictorial was very cool.. and easy to follow.


Fantastic and congratulations on your build!!!!!

A great way to start the day!
Title: errata
Post by: hair force one on October 19, 2003, 08:30:11 AM
:oops:check at,
http://partouze.chez.tiscali.fr/stomp/electro-moronix.htm
that is the true link to the page (soory guys!)
Title: Please let me know if you have built this project
Post by: aron on October 19, 2003, 02:59:53 PM
WOW,

VERY NICE!  8)
Title: Please let me know if you have built this project
Post by: Phiredog on October 20, 2003, 08:35:23 AM
I built it Saturday and hooked it all up on my test stand and . . . . nothing. I get a signal to my amp but it has no effect. The tone control does not affect the sound at all. Any ideas?

Thanks, Bill
Title: Please let me know if you have built this project
Post by: aron on October 20, 2003, 02:18:48 PM
Bill,

Did you use a switch or wire directly to jacks from the circuit?

hmmm... what tone control?

aron
Title: Please let me know if you have built this project
Post by: Phiredog on October 20, 2003, 02:28:36 PM
Quote
Did you use a switch or wire directly to jacks from the circuit?


I wired directly to the jacks.

Quote
hmmm... what tone control?


Make that Boost, not Tone.

Bill
Title: Please let me know if you have built this project
Post by: Chris R on October 20, 2003, 03:16:59 PM
Is the transistor in the right way ?

Chris
Title: Please let me know if you have built this project
Post by: aron on October 20, 2003, 04:01:26 PM
Bill,

What type of transistor did you use?

Good that you connected directly to jacks, makes it easier to debug.

OK, can you measure the voltage on the pins of your transistor? What you do is put your meter to measure DC voltage and put the black probe on any ground point, and the red probe on each leg of the transistor (you can do it from the bottom of the board ) and write down the values (voltages) for each leg.
Title: Please let me know if you have built this project
Post by: Phiredog on October 21, 2003, 10:57:56 AM
Quote
What type of transistor did you use?


I used 2n5088.

Quote
OK, can you measure the voltage on the pins of your transistor?


Yes, I can but wasn't sure how until now. I will try to check these tonight and get back to you.

Thanks for all of the help.

BTW - should I get a signal to the amp with the transistor removed? I did last night. I would have assumed a signal could not get through. Probably a obvious but I'm asking anyway.
Title: Please let me know if you have built this project
Post by: aron on October 21, 2003, 02:09:47 PM
You might but it will be weak.

You probably have a simple wiring problem, or the transistor is in backwards. Flat side should be facing the "front" of the circuit (input cap).
Title: Please let me know if you have built this project
Post by: tonepoet on October 24, 2003, 01:04:20 AM
Hi Aron,
     I got most of my parts at Radio Shack (up here in Alaska, I don't have a lot of choices). Is there a real difference between that and the parts at Small Bear? Also, I saw some metal film resistors at the Shack, will this make a difference with the effect? I know that a lot of DIY'ers often speak of these. Also, if I hold down the soldering iron too long, will I fry parts? I am extremely sloppy at soldering, I may go get myself another board and some more parts and start over, it looks like hell compared to yours. I'm not sure if it works completely or not, I still have to attach the pot and jacks and switch. I can never thank you enough for doing this for all of us, I often read your post before, but having no experience other than modding a TS-9 every now and then, this is a breath of fresh air. Do you think that maybe at one point we can learn about an easy A/B switch, possibly a looper with a tuner out or something?
Title: Please let me know if you have built this project
Post by: aron on October 26, 2003, 02:18:27 AM
In general, the parts you get from Small Bear/Mouser are better quality than the Radio Shack parts. Does it matter for this project? Probably not much if at all.

Metal film is good for lowest noise, but again, it probably doesn't make that much difference if at all in this circuit.

You will probably not fry any parts on this project from heat with the exception of the socket. It can melt if you leave the iron on too long.

I made a bypass A/B box for myself.

It's a booster (last it was MXR micro amp) and it switches between the Micro amp and muting the input and sending it to a tuner.

I can show that as well soon.
Title: Please let me know if you have built this project
Post by: Warpfingers on October 26, 2003, 11:47:32 PM
Hi, built this circuit a while ago, sounds pretty good but a little lacking in higher frequencies with the gear i'm using, gonna add the range control if i can find some half decent pots around. I should have socketed the chip for experimentation but was too eager to get it done...

Can't thank you enough Aron for your work putting that great guide up!  :D

WF
Title: Please let me know if you have built this project
Post by: RJ on October 31, 2003, 11:56:26 PM
Hi Aron, managed to get this working tonight...very fun project and perfect for a first-time builder.  Thanks again for the excellent walkthrough.
Title: Please let me know if you have built this project
Post by: aron on November 01, 2003, 02:42:10 AM
COOL RJ! THANK YOU!!!!!  8)
Title: Please let me know if you have built this project
Post by: PB Wilson on November 09, 2003, 03:18:51 PM
Well I finally wired up by NPN Boost and spent a bit of time playing through it. I never really thought I'd need a boost pedal since I'm not one for soloing, but I must say that I was pleasantly surprised at how it made my setup sound more musical and full. It made apartment-level playing sound much better to my ear and made the notes bloom. At the highest levels I did get a bit of radio reception, along with a nice mild overdriven sound, but I figure the radio will disappear once I box it up and shorten the wires. I've yet to use it with some of my other pedals and at much higher volumes, but I can already see it becoming a permanent member of my usual setup.

By the way, I used a socketed 2N5088 transistor and am going to try some others in the near future. I followed the original schematic and may try the range control in the future. I also wired it up to a 3PDT (thanks Aron) and fired it up on the first try! This was my first foray into perf-boarded effects and I like it. Aron, your pictorial was extremely helpful and gave me the confidence to try other perf-boarded projects. At the moment I have a Harmonic Jerkulator almost ready to go and have plans for a Distortion+ with many mods and one of Joe Gagan's excellent pedals. I'm hooked!

I do have a few questions for those who made this pedal. Where do you put it in your chain of effects (keep in mind that I have a germanium Fuzz Face clone at the front) and does anyone leave theirs on all the time like some players do with their Z-Vex SHO?
Title: Please let me know if you have built this project
Post by: aron on November 09, 2003, 07:43:14 PM
Congratulations!!!!!!

As you can see, wiring with perfboard can be very quick and easy.

The method will work fine for most small to medium sized pedals. I've made a bunch of pedals using perfboard.

It works!
Title: Please let me know if you have built this project
Post by: Phiredog on November 16, 2003, 04:45:38 PM
Hey Aron,

I got my pedal working but I'm getting a terrible hiss. Any ideas?

Thanks, Bill
Title: Please let me know if you have built this project
Post by: aron on November 17, 2003, 01:21:57 AM
What kind of transistor did you use?

Are you sure the input capacitor is the correct value?
Title: Please let me know if you have built this project
Post by: Phiredog on November 20, 2003, 09:19:15 AM
Hey Aron,

I fiddled around with the transistor a little and now the hiss is gone (well, mostly but a little bit is OK with me). I may not have had it seated well in the socket. Oh, it sounds great by the way!

Thanks for all the help,

Bill
Title: Please let me know if you have built this project
Post by: aron on November 20, 2003, 12:31:34 PM
COOL! 8)
Title: Please let me know if you have built this project
Post by: smoguzbenjamin on November 21, 2003, 11:30:14 AM
Yay! I built the NPN boost for the second time (first time round I screwed it up) but now it works great! excellent aron, I love it! It sounds a little bassy though, but I haven't implemented the range control yet... :mrgreen:

I was thinking... If you used two diodes (asymettrical to ground) before the output cap, would that give a distortion? 'Cause I have one dud of spare parts lying around here, and I'm thinking of making a distortion out of that. Could I do that?
Title: Please let me know if you have built this project
Post by: aron on November 21, 2003, 02:10:12 PM
COol and wow learning already.

Yes, put back to back diode and get a distortion pedal. Put them after the output cap to block DC from hitting the diodes.
Title: Please let me know if you have built this project
Post by: smoguzbenjamin on November 21, 2003, 05:01:05 PM
yeah I'm learning, but I got confused back there  :oops:

by two diodes back to back do you mean this:
http://scorpius.spaceports.com/~ubermaus/guitar/diodes1.html

or do you mean this:
http://scorpius.spaceports.com/~ubermaus/guitar/diodes2.html

The second example doesn't seem logical to me, but I'm asking just in case. :mrgreen:
Title: Please let me know if you have built this project
Post by: aron on November 21, 2003, 05:27:13 PM
Yep, (first one) like this:

(http://www.diystompboxes.com/pedals/2diodes.GIF)

Please don't forget my simple mods page:

http://www.diystompboxes.com/cnews/mods.html

 :D
Title: Please let me know if you have built this project
Post by: smoguzbenjamin on November 22, 2003, 04:26:23 AM
If I wanted to create soft clipping in the PNP boost circuit (I just read richardo X's cook your own distortion), would I put the diodes & cap between the Base and Emitter, or between Base and Collector..?

My brain's saying Base & Collector, because the collector is connected to the output directly... but the Emitter is connected to ground, and there's the 100k resistor from ground to out... I'm confuzzled  :?

Oh btw, my new multimeter has a tranny test, and it gives a value that it calls hFE. What does that number tell me?
Title: Please let me know if you have built this project
Post by: Kleber AG on November 22, 2003, 06:48:42 AM
Nice, your multimeter will be your best friend with electronis :)
HFE on the multimeter is suposed to measure the transistors gain, but it's also suposed to be a poor, non accurately measurement, well it works most of the times for me

But it's nice to have a multimeter.
About your question on diodes take a look at this article for some ideas
http://www.smallbearelec.com/Projects/TweakO/TweakO.htm

I'm not the one to answer you onthe diode question, sorry.

Hope you're having fun! Welcome to "StompBoxHollics" :P

Kleber AG
Title: My First Pedal
Post by: Lonestarjohnny on January 02, 2004, 08:58:40 AM
Sorry I'm so late in makin a post, But hope you all had a Great Holiday season, I did, My first pedal was Like when the first Son was Born, Back then we did'nt know what it was gonna be, so My first pedal gave me sweaty palms not knowing what to expext, I built my Breadboard tray first, this way I could experiment a little with different transistor's,I got a lot of Great Idea's from Old Post's from the Forum Here, Wow, What a Treasure Trove of a place, My hat's off to Aron and all you Guy's out there doin " Your Thang "
The Boost did Work Right off the getgo, had a few transistor's that were somewhat a problem, mostly just getting the proper Bais, It got me so excited that I went out to my shop and dug out a couple of boxes of Old Military Surplus Transistor's I had been collecting for quite a few year's, more on this later, also a good source for great old transistors can be found in early Japanese Transistor radio's, they were loaded with 5088's,
My next step will be mounting My New Build in a Hammond box and a paint job to give it that " My Pedal " touch.
Thank's Aron, Your a Great guy to share all this great info with all here,
Was fun and I'll be posting a Pic or 2 of the finished project.
Thank's,
JD
Quote
If You don't Dig the Blues, You gotta Hole in Your Soul "
Title: Please let me know if you have built this project
Post by: Japy on February 25, 2004, 07:47:43 PM
Hey!

Thanks a lot Aron for leading beginers in the great world of home made stomp boxes :D

I've built the booster tonight and it worked for the 1st time 8)

I've tried it on cheap ibanez guitar and the sound was really great. There was some noise but I think it'll ok when I'll box the stuff. I'll try it deeper tomorow with a telecaster 8)

I used a 2n2222 transistor and I feel it sounds a bit fuzzy when I crank up the pot! Will another transistor give a warmer sound while having a some distorsion whith the pot @ maximum? Or does it comes from the I/O caps?

List of troubles I had during the building process :

- I forgot to buy the two 100k resistors :(  I found one on a old unused device but I only found a 120K instead of the 2nd 100k... I put it instead of the 100k resistor wich is between the output and the GND on your scheme. I guess it lowers the output level, nope??
- My input cap isn't a flat green one but a very small orange/yellow one, does that matters??
- The pot is very noisy!! It was the cheaper at the store... I'll buy a better one!

Next step is puting a range control and the upsidedow diodes to make it overdrive. Then bypass and box :P

BTW, should I change some components to plug my Washburn 5-strings active bass in that booster? The output level of this bass is very high!

Bye
Title: Please let me know if you have built this project
Post by: aron on February 25, 2004, 09:06:05 PM
>I've built the booster tonight and it worked for the 1st time

COOL!

>I used a 2n2222 transistor and I feel it sounds a bit fuzzy when I crank up the pot! Will another transistor give a warmer sound while having a some distorsion whith the pot @ maximum? Or does it comes from the I/O caps?

Yes, the 2N2222 gets fuzzy, but I kind of like it. Yes, other transistors will give different tones especially when cranked.

> only found a 120K instead of the 2nd 100k

If it's the output resistor, that's fine.

>My input cap isn't a flat green one but a very small orange/yellow one, does that matters??

Not at all.

>The pot is very noisy!! It was the cheaper at the store... I'll buy a better one!

hehehehe

>Next step is puting a range control and the upsidedow diodes to make it overdrive. Then bypass and box

The range control is very useful. If you make the diodes switchable, that will be even more flexible.

Aron
Title: Please let me know if you have built this project
Post by: Japy on February 25, 2004, 09:52:51 PM
> If you make the diodes switchable, that will be even more flexible.
 I'd love to!!! Any tips??

Thanks again Aron 8)
Title: Please let me know if you have built this project
Post by: aron on February 26, 2004, 02:50:29 AM
You can either put a SPST switch to disconnect the diodes from ground which will remove them from the circuit or use a switch to switch in different diodes.

I would just use a switch to toggle them in and out of the circuit.
Title: me am builder
Post by: sonofdirt on April 05, 2004, 04:46:18 AM
whats up i built this pedal in preparation for building the Maestro Brass Master clone. Hooked it up on the breadboard at it worked the first time, now it's on a perf mounted in an electrical box i picked up @ home depot. All I'm waiting for now is my 3pdt switches to come in the mail and I'll be able to finish this sucker off with all the hardware and a nice finish. This was a great excercise and i'm very happy with the results! So simple yet so cool. It really breaks up nicely in the upper ranges of the pot for a lo-fi distortion; although at the moment I'm getting some interesting RF interference with the pot cranked; it's something i'll have to work on.

I've got a question though about this boost. It is very cool but there is quite a dramatic change in mine when switching the efect on and off even when the pot is at the smallest value. My question is... in this circuit, is the boost supposed to be gradual from original tone to superboost over the range of the pot; or am i supposed to be hearing a major boost like i am even with the knob at the smallest value?

Also, i am a bass player so i am especially interested in DIY bass pedals. The only one i've found so far is the Maestro Brass Master @ generalguitargadgets.com; can anyone reccommend any other links? thanks.

- Brian
Title: Please let me know if you have built this project
Post by: smoguzbenjamin on April 05, 2004, 10:59:58 AM
In my build the volume went below unity gain on low pot settings. I belive the 9 o'clock mark was about unity for me. Strange. Did you change any resistor values at all?
Title: Please let me know if you have built this project
Post by: lightningfingers on April 10, 2004, 03:39:01 PM
hey aron,
 probably too late now, but i just finished mine today.
its great, put it in front of a fuzz or a wah and it really changes what you can do.
recommendation: swap the electrlytics out for tantalums of the same value
and it makes it a helluva lot smoother.
i ended up using a 2n3904, i tried,
2n5088, too much gain drove amp to distortion whaen boost was at max
some germaniums, sounded great but i needed them for something else
i also tried a MPSA13 but it didnt work right (maybe because that ones a darlinton....DUH!!)

Quote
can anyone reccommend any other links? thanks.



try the bass fuzz at runoffgroove. cant recommend this one enough
Title: boost photos
Post by: sonofdirt on April 23, 2004, 05:55:19 PM
whats up, i took some photos of the boost pedal i'm building, check it out:
(http://sonofdirt.no-ip.com/boost1.jpg)
(http://sonofdirt.no-ip.com/boost2.jpg)
(http://sonofdirt.no-ip.com/boost3.jpg)
the enclosure is an electrical box i got @ home depot for two dollars; it has a few predrilled holes but i plan on filling them in with steel epoxy and then painting w/ an enamel finish. all i'm waiting on now is the damn footswitch I got on ebay from some guy that lives in israel, doh!
Title: Please let me know if you have built this project
Post by: el mariachi on May 03, 2004, 07:02:22 PM
I just finished the project and it turned out great.  Thanks a lot for all the help, I found this site a little late but it was extremely helpful.  Looking forward to doing the next beginner project as well.
Title: Works first time
Post by: SlyN on May 16, 2004, 05:59:17 PM
Wow, I am amazed. Even a complete beginner like me can make this pedal. The instructions are remarkable. The help available on this site is great. Thanks for a great pedal.

Now what shall I make next ?  A multi-face I think .

Sly
Title: Please let me know if you have built this project
Post by: aron on May 20, 2004, 03:49:01 PM
THANK YOU!!!!!  :D
Title: Please let me know if you have built this project
Post by: kdog on May 20, 2004, 06:54:30 PM
Okay, I guess I'll log in as someone who's completed it too. I have for a while but was waiting to complete the enclosure before posting... Overall, the circuit building was very easy/fun, I made one wiring error and caught it before trying to power it up. I have some prior experience with breadboarding, etc, in school (EE). I did a pretty good job of checking everything with the Multimeter and it worked straight away. Always nice. :D

Tried a few transistors. I actually liked the 2N2222 in it quite a bit.

Added a True bypass switch (DPDT, no LED) with the intention of putting it in an enclosure (as it is my first FX build). Was going to use a RACO box but that absolutely sucked (in terms of drilling etc). Also, realized I didn't have enough drill bits (specifically, that dang Alpha DPDT switch requires a bigger bit than my drill can even accept). Also realized I'm probably going to have to resolder some of the parts when it's mounted for positioning....

I was pretty stoked after I built the ckt and found it to be working/useful but am finding that I am not digging the enclosure building/finishing up part too much.  Anyone have any newbie do's/don't's for this point to make it less painless? I can start a separate thread (or revive an old one), if Aron wants to keep this thread separate.

I'm ordering some Hammond Boxes (I initially couldn't stand the thought of paying $8/box but at this point, I'm thinking my time/frustration is worth it :) ).

Great write up, by the way, Aron. This is a good intro to the hobby and it's almost like getting a 'free' piece of gear. ;) While building I intentionally bought a bunch of different parts/values to have enough on hand to facilitate more building.
Title: Please let me know if you have built this project
Post by: aron on May 20, 2004, 08:01:11 PM
Thank you kdog!!!!!

The part I hate the most is wiring the pots and jacks etc... I love building the circuit, but the wiring.... ughhhh...

I'm going to try the t-shirt method of transfer.... I haven't tried it yet, but I do have the sheets.
Title: Please let me know if you have built this project
Post by: kdog on May 21, 2004, 11:40:47 AM
Quote from: aron

The part I hate the most is wiring the pots and jacks etc... I love building the circuit, but the wiring.... ughhhh...


Cool. I'm glad to know someone who's really serious about it and has done a lot of successful projects doesn't like some piece of it, too.

While doing the first project and researching components to purchase to get my in stock parts suffficient to do a few projects, I went and downloaded a schematic editor (Eagle 4.11) and I started doing some PCBs of some of the schematics, I started tweaking on the designs, etc, learned how to use Eagle's autorouter (main reason I was attracted to it).  

I seriously started thinking, "Okay, I could seriously do this as a career". Guitar stuff and computer stuff, this is awesome. Once I got about halfway into building... Suddenly, it was like, "UGH! I gotta put this in a box, I gotta add wires, knobs, and battery, ick!".

I'm sure when I get it into a box and start painting it, decorating it, labeling it, etc. I'll be, like, "Cool!" again. (I like doing decorative art type stuff).
 
PS: Along with my Hammonds I'm getting some PNP Blue. :) I'm thinking making PCB's will be kind of fun and streamline the process a little. I've actually done it once before, but never with the computer layout which should be really cool.
Title: I have built it!
Post by: gareth on June 06, 2004, 09:26:46 AM
I have built the pedal, and it works! I did not make it true bypass initially, but I am working on that now. Its sure sucks tone (when switched off) without it! I also left the LED out, mainly because I forgot to drill a hole for it... may put that in later too.

Thanks Aron for puytting this resource togther, I probably never would have bothered if I hadn't found this site!

Can anybody reccomend a good pedal to try next? I was thinking of trying the "Easy Face" from www.generalguitargadgets.com. I would eventually like to make a an overdrive that uses a tube ... is that way harder? I've only ever played/seen one and that was a bottle rocket. They cost $800(NZ) so I will never be able to try one at home and what it can really do ... seemed a bit muddy in the shop (but HUGE sound).

Anyway, thanks again Aron!




I feel like a Jedi who has just made his first light saber from scratch ...
Title: Please let me know if you have built this project
Post by: smoguzbenjamin on June 06, 2004, 01:35:44 PM
Well, a tube usually uses high B+ voltages to operate (think 300vDC) but you can get some low-voltage tubes that use 12v... that could sound pretty cool. Think of a tube as an oversized FET ;)
Title: Please let me know if you have built this project
Post by: gareth on June 06, 2004, 06:25:25 PM
okay,

I assume the different voltage will make it behave differently right? But having a high voltage pedal would be way too dangerous wouldn't it?

Also, My booster makes a nasty buzzing sound when I strum hard. My souldering is pretty terrible, so would that be the problem? Or is it just my components are crappy?

Cheers
Gareth
Title: Please let me know if you have built this project
Post by: aron on June 09, 2004, 09:02:22 PM
>I assume the different voltage will make it behave differently right? But having a high voltage pedal would be way too dangerous wouldn't it?

IMO it's too dangerous for a beginner type of deal. It's better to mod an amp at first (a simple amp), then move on from there.

>My booster makes a nasty buzzing sound when I strum hard. My souldering is pretty terrible, so would that be the problem? Or is it just my components are crappy?

It could be overdriving the amp input, does it always happen??? Does it boost ok?
Title: the pedal!!!
Post by: johnyze on June 12, 2004, 02:55:34 PM
hey aron, how goes it? I just wanted to thank you as well for your time and patience in helping everyone with this project, including me. I just got my parts the other day, and finished building last night at 2 am. I was watching the return of the king, and only spent about an hour soldering the last few pieces together. It sounds cool, but I'm wondering about the distortion I get when I crank the pot all the way up. I haven't done the switch, or anything fancy, because I just wanted to get the circuit running. The transistor I'm using is a 2n2847 (actual transistor reads np2847, does that make a difference?). Yeah the only problem Ive had is that it turns into a fuzz when I crank the boost all the way up. Any ideas? is it just the transistor? Thanks so much again.

John
Title: Re: the pedal!!!
Post by: aron on June 12, 2004, 04:55:33 PM
Quote
The transistor I'm using is a 2n2847 (actual transistor reads np2847, does that make a difference?). Yeah the only problem Ive had is that it turns into a fuzz when I crank the boost all the way up. Any ideas? is it just the transistor? Thanks so much again.


Hi John!

According to Gus it's designed to do this. In fact, this helps when overdriving a tube amp. I like the fuzz that I get when I use a 2N2222 type transistor.
Title: Please let me know if you have built this project
Post by: Riggins on July 03, 2004, 09:15:44 PM
I've been lurking here for about a month, and had bought my parts about 2 weeks ago.
I just got around to setting up my little workshop in my shed and put this baby together this afternoon.

It Rocks! I can't believe that it sounds as good as it does, I know it was meant to be kept simple, but I like the way it sounds :)

I have a few different transistors to try and have liked the couple that I've used so far, they are very different sounding from each other though (another plus). Don't have the tranny specs in front of me to post or I would, next time perhaps.

Just wanted to post and say thanks a ton aron! This is just what I needed to help myself get familiar with reading schematics and generally get my feet wet working on electronics. I followed your instructions carefully and didn't have one single glitch.

Thanks again, you are the man :)
Title: HURRAY!
Post by: remmelt on July 04, 2004, 12:09:00 PM
after unsuccesfully trying a fuzz face clone and some other booster (i don't even recall which one it was... disappointments, disappointments) i finally did it!

at first the pedal didnt work, i had tried hooking it up with alligator clips for leads and only a real thin sound came through... next day, i figured why not and hooked it up with some regular wire and solder. it works! great!

i am quite surprised of the sound that came out. the electronics shops over here (amsterdam, nl) didnt have any green metalfilm caps for the input, so i have this red plastic box thing, which they assured me is the same. i got me a 2N2222A but it's not plastic like yours, it looks like a metal can (like here (http://www.eidusa.com/Web_Product_pic/Electronics_products/M_2N2222.jpg)) so i was a little worried at first that it wouldn't work, but it's working great!

thanks a lot for making it this easy to follow. i really appreciate it!

now for an enclosure...

(edit)
i found me a box! i put some pictures up, you can view them here: pictures (http://diystompboxes.com/sboxforum/viewtopic.php?t=23589)
Title: Please let me know if you have built this project
Post by: chokeyou on August 21, 2004, 03:11:43 AM
well i put it all together and hooked up my wires and stuff and its not working  right...i checked mine to the schematic etc and all my solder jobs look good, checked them with the multimeter and all is well. i CAN hear my guitar coming through it but theres a constant, godaweful buzz noise that i cant seem to get rid of, im wondering if my wire leads are positioned wrong, though i dont know how they could be this was so simple...another thing i discovered is that my battery seems to heat up...if that helps you at all. any help greatly appreciated!
Title: Please let me know if you have built this project
Post by: bazzwazzle on August 21, 2004, 03:38:36 AM
i'm having the same problems as you, sometimes the battery heats up when i shut off the amp. All i get is a signal when i tap with my finger etc. I don't really hear my guitar soming in at all. I've checked 60000000 times I do not know what is wrong and i'm becoming dissapointed :/ I WILL NOT GIVE UP THOUGH!
Title: Please let me know if you have built this project
Post by: chokeyou on August 21, 2004, 04:50:09 AM
hah keep trying, my problem was that i had the sleeve of my input jack wired directly to the + 9V...didnt take into consideration in part 4 the pic shows a resistor and LED between there....so i just connected the input sleeve to ground like the other one....

works good....still needs something though....maybe i'll do that shape mod...whats it do exactly?
Title: Please let me know if you have built this project
Post by: remmelt on August 21, 2004, 08:08:45 AM
battery heating up is usualy because of a short circuit. check, double check, tripple check, etc.

it's probably a wiring mistake!
Title: Please let me know if you have built this project
Post by: bazzwazzle on August 23, 2004, 10:50:51 PM
well i took everything off the breadboard, soldered it in, and finally got it going. I'm hooked! IT'S awesome, it sounds good and the feeling of accomplishment is great :D   thanks aron!
Title: Please let me know if you have built this project
Post by: chokeyou on August 29, 2004, 03:23:23 PM
second time i built it, i had the first one working but when i went to put it into a small enclosure the wires were too short so i jsut decided to start from scratch...now for some reason it sounds like a jawari or something...i get a signal through it but its only the attack of the note, no sustain...and it sounds really thin, anyone know of a reason for this?
Title: Please let me know if you have built this project
Post by: Samuel on August 29, 2004, 04:17:55 PM
Check the voltages on your transistor, and check the resistor values and solder joints around the transistor. Sounds like its probably misbiased.
Title: Please let me know if you have built this project
Post by: chokeyou on August 29, 2004, 04:29:36 PM
how do i check the voltages on the transistor? i know the transistor works because i used the same one earlier on a working circuit its a 2n2222. ive looked at resistors and stuff too, coming up empty handed here
Title: Please let me know if you have built this project
Post by: aron on September 01, 2004, 04:09:22 AM
Red lead on a pin, black on ground. Set the meter to DC.

Check each pin and post the results.

Aron
Title: Please let me know if you have built this project
Post by: vanhansen on September 07, 2004, 09:31:27 AM
Hey aron,

I put this project together yesterday and have a few questions.

Just so you know, I'm using the 2n2222 transistor, I plan on trying a few others.  Any recommendations?

Can a potentiometer other than 5k, say 250k be used?  What difference will it make?

Mine seems to be taking away some of the highs when engaged.  Why is that?  It feels more like a compressor than a boost.  I'm not getting much of a boost at all.  Any ideas?  If you need the tranny voltages I'll post them later.
Title: Please let me know if you have built this project
Post by: aron on September 07, 2004, 03:28:36 PM
Very strange. Did you check your battery voltage?

As far as taking away highs, if anything it should be adding. I suspect a miswiring around the 100K, 10K, 47K junction.

I don't think a 250K pot would work at all. It would misbias the transistor. You can try any type of NPN transistor, although I liked the metal can 2n2222 the best for what I had lying around.
Title: Please let me know if you have built this project
Post by: vanhansen on September 07, 2004, 03:50:57 PM
Thanks.  I'll check the circuit around those resistors.  Would a backwards resistor cause this (I can't remember if resistors have to go in a certain direction or not).  When I checked the battery voltage coming in to the circuit once it was complete, it was 9.49 volts on my meter.  Brand new battery.

I'll let you know my findings.  I plan on checking the transistor values too just to be sure they are in the right ranges.
Title: Please let me know if you have built this project
Post by: vanhansen on September 07, 2004, 10:48:45 PM
Hey Aron,

I double checked the wiring around the 100K, 10K, 47K junction.   All checked out OK.  I then remembered something.  When I first got everything together, I wasn't getting any signal and thought the transistor was in backwards so I flipped it.  Turned out that wasn't the problem though.  I had miswired the pot at the board.  I got that situated and got sound.  Well, I forgot to flip the transistor back around.  Once I did that, BOOST!!!!!  Wow this is a cool circuit.  Can't wait to try out some other transistors in it just to see what they sound like.  Now I just have to get the scratchy pot taken care of.  But hey, it's boosting now.
Title: Please let me know if you have built this project
Post by: aron on September 08, 2004, 03:28:42 AM
YEAH!!!!!!!!!!!!!!!!

Alright!!!! Hmmm.... I thought your pinout was correct - I took a look at your picture but I guess I was incorrect.
Title: Please let me know if you have built this project
Post by: vanhansen on September 08, 2004, 09:32:21 AM
Picture? I didn't post a picture.  I saw several who did, though.  Easy confusion.  Next up, add the 3PDT switch and box it up.  I'll add an LED later.
Title: Please let me know if you have built this project
Post by: remmelt on September 08, 2004, 09:37:01 AM
remember: half the fun is in the boxing! make a good one out of it!

lots of inspiration to be had from this forum!
Title: Please let me know if you have built this project
Post by: vanhansen on September 08, 2004, 09:46:09 AM
I actually have a box.  A few years back I acquired an empty MXR Dynacomp box and I wired it up as a footswitch for my Marshall.  I plan on taking that box and repainting it.  It's the perfect size and will look good next to my Phase 90.
Title: Please let me know if you have built this project
Post by: vanhansen on September 10, 2004, 11:06:52 AM
Well, can't use the old MXR box.  Won't fit so I ordered a few from small bear along with a few pots and stuff.
Title: Please let me know if you have built this project
Post by: jayp5150 on September 19, 2004, 10:33:35 PM
I just did this Saturday morning.  It was my second build.  I decided to go ahead and add a distortion channel to it from the start.  I used 4 diodes (1N914) to try to keep the level from dropping too much, and to not be so nasty.  

I also wired in one of Orman's satuartion controls, but I need to put it on a dpdt mini switch.  Since you have a lead to the pot, then one back from it, the switch is only cutting off the input to the saturation control, so the diodes are still kind of in the loop.  Because of this, I haven't heard the clean side of it yet, but I'm going to fix it tomorrow, probably.

I also picked up some 1N279 diodes the other day.  Are these Ge?  I swapped them into my Muffer (the 1st build) when I was boxing it up, and they were quieter than the 1N914, and didn't seem to distort as much.  They are also considerably larger (higher voltage capacity?).  I figured that since a 1N270 was Ge, that these may be a derivative of those.

Sounds pretty sweet into a tube amp (it was a Peavey Classic 30).

Thanks to everyone for this awesome forum--I'm learning a ton about my new obsession.
Title: Please let me know if you have built this project
Post by: aron on September 20, 2004, 03:51:03 AM
Very COOL! I think they are Ge diodes.

Congratulations!
Title: Please let me know if you have built this project
Post by: jayp5150 on September 20, 2004, 10:57:13 AM
Thanks!

I found out that they are Ge diodes, but it said that they are high voltage.  Does this mean that they break up (distort) less or more?
Title: Please let me know if you have built this project
Post by: aron on September 20, 2004, 03:54:08 PM
I have never used these. I couldn't find any info on them.

Try using your meter on the diode function and see if you get anything.
Title: Please let me know if you have built this project
Post by: jayp5150 on September 20, 2004, 04:20:57 PM
As a beginner, I am meter-less.  Maybe when I get paid...

Thanks for all you help.
Title: Please let me know if you have built this project
Post by: siaoguitar on October 03, 2004, 08:22:40 PM
Hi to Aron & all who heard my groaning the last few days about not getting the booster to work, guess what? i've made the NPN booster work!!!! Wow, so happy as a beginner, my confidence has indeed been BOOSTED!
Thank you for all who tried to help, it was my mistake of wiring the battery(-) to the wrong contact, rather it should go to the sleeve, viola! the circuit boosted!

check out the box-up booster, i copied another guy's idea in using a food metal box.The sound is superb, using my neck humbucker, i can do some jazz riffs which was warm and tight!

http://community.webshots.com/album/193638340ZprfOx
Title: Please let me know if you have built this project
Post by: Crackpot on October 10, 2004, 11:37:18 PM
Aron,

Built it about a month ago.

I'd been struggling with an AMZ mini-boost and an Orange Squeezer for about 3 months -- first builds and I couldn't get either to work. So, having been beaten to the admission that I actually am a beginner, I decided to try the beginners' project. I spent about two days on it -- making every possible mistake at least twice. Every time I turn the board over I immediately forget what it looks like on the other side -- even with diagrams. But I got it working. And I got a good idea of the kinds of mistakes I'm prone to.

I then perfed an LPB1 -- the simplest circuit I could find at GGG. Got that working and made another -- just to see if it was a fluke. It wasn't. Tried a Fetzer from ROG -- another very simple circuit -- and that worked. Made a signal tracer, went back through the abandoned Orange Squeezer and got it working. Same with the mini-boost. Built another Orange Squeezer with tantalum caps (saw them mentioned somewhere) and moved the trim to the top (I was boxing all of these as I went along -- that's where all the 3PDTs are going).  Got a Rebote2 PCB on the For Sale/Trade forum -- soldered it together in an evening and it worked right off. It's easy when you don't have to draw your own layout -- and the PCBs are MUCH smaller than my perfs. A Fetzer PCB was thrown in with the Rebote2 and I'm waiting for my Small Bear order to put that together -- and a Mosfet Boost (another PCB from Sale/Trade). I've given some of the doubles to friends.

I have a handle on the basic skills, now. Thanks -- THANKS -- for walking me through. I'm having a terrific time.

And I'm waiting for the second beginners' project.
Title: Please let me know if you have built this project
Post by: rubberabbit on October 11, 2004, 10:19:33 AM
Quote from: jayp5150
As a beginner, I am meter-less.  Maybe when I get paid...

Thanks for all you help.

im afraid at my country its gonna cost me more than 50 ringgit malaysia...and even worse if i lose interest in this... :?
Title: Please let me know if you have built this project
Post by: pbrommer on October 14, 2004, 11:44:35 PM
WOOOOOOOHOOO. After struggling with my damned Rangemaster a few weeks ago, I somehow got this project and the Rangemaster up and running. Quite a nice little boost. It'll be fun to play with against the Rangemaster - and they both seem like different beasts. Thanks again Aron.

Patrick
Title: Please let me know if you have built this project
Post by: KORGULL on October 16, 2004, 11:50:16 PM
Hi,
             I finally got around to putting one of these together. It Didn't work at first. I spent at least an hour checking everything over...and over.

          Finally found one of the 100K resistors connected to - instead of +. I had checked every connection like 6 times already. It's so easy to keep missing an obvious mistake.
       
               I like an LED indicator and DC Power jack, so I added them into the circuit. I have some DPDT stomp switches - so I tried the bypass circuit that uses a 3906 PNP as shown on Jack Orman's site (didn't have any MOSFETs at the time).It Worked o.k. with battery pwr. but had some trouble getting the LED to turn off when using DC pwr. from a pedalboard (had to add very large series resistor).
   After getting the MOSFETs I ordered I changed it to the millennium II which is much better - more stable.
   
              Probably gonna do an octave fuzz next. After that, the "Hornet" - I already have the transistors for it from Smallbear. Can't wait!
     
          .....THANKS for all the great info here. Without this and the other GTR FX 'sites it would be a much longer process to learn to build your own stompboxes.
Title: Please let me know if you have built this project
Post by: tambek on November 23, 2004, 04:48:07 AM
sorry, what does this effect do anyhow.. clean boost?
Title: Please let me know if you have built this project
Post by: jayp5150 on November 23, 2004, 08:57:28 AM
Quote
sorry, what does this effect do anyhow.. clean boost?


Pretty much.  On a solid state amp.  It does break up a bit at the very max setting; but on a tube amp, it's very cool.  It pushed the clean channel of my dad's Classic 30 into a nice overdrive, and it takes the rhythm channel of my 5150 and makes it very "brown."  Adds some sustain in both cases.

You can add more distortion with some diodes, I have a set on mine that can be switched in, and have a softness control on them.

Build it and check it out, it only took me like an hour the 1st time, maybe less, and it worked right away.

Good times.
Title: Working, but noise!! Can you help me?
Post by: bisser_hot on January 05, 2005, 09:09:53 AM
Hi There!

Yesterday i finished the NPN booster without having done anything like that before. I only had perf-boardwith 1x3 holes, so that caused me a bit of trouble. I managed to fix it with some loops.
There is a bit of noise in it, and it recived "russian-radio" as we call it here in Denmark. I guess the radio is there because i havet put it in a box, but from where is the other noise?? Is it because i havent uset metal film instead of carbon?
When i put it before my amps distortion channel i get TONS of noise when i turn it just a bit up, and even more when i cranck it up all the way. Is that normal. --- i use the 2N2222 trans.
The boost is (when you are playing) very fat and useable!!
Thanks for the very good intro to this DIY world Aron, I am hooked now!

By the way...can anyone help me with a tone pot, what should i be and where to wire it...a little drawing mabye?

What is the next beginners project likely to be?? just curious

Best regards
Christian H., Copenhagen
Title: Please let me know if you have built this project
Post by: aron on January 07, 2005, 05:52:46 AM
It's probably just amplifying whatever noise is there already. I imagine it will be pretty noisy in a distortion channel. Do you get that noise when you boost into the clean channel?

Putting it into a box will probably help a lot.

For the tone control, you can try the tone mods in my simple mods page:

http://www.diystompboxes.com/cnews/mods.html

As for the next project, it's going to be an IC project. I ran out of certain parts, but I placed an order and hopefully soon.  :roll:
Title: Another beginner project completed
Post by: Jude on January 11, 2005, 02:42:32 AM
Hello all.

Today I completed the beginner project NPN boost. I'm quite pleased with the results and I'm grateful to Aron et al for their help and instructions. I've built an AX84 P1 style amp and so, I wasn't afraid to give this a go, but I was surprised at how tiny all the parts are in comparison! After having built the stompbox, I did run it through my amp and it pushed it quite nicely. For a second opinion, ask my neighbors.....

My build is a verbatim copy of Aron's, per the instructions. Here's the gory details.:

(http://music.breaffy.us/npnboost/innards.jpg)

I ran a preliminary test with the wires like this and it did boost. I picked up some radio: Rush Limbaugh, of all things, is what it sounded like ??

Today I packed it into a housing and added a DPDT toggle switch.

(http://music.breaffy.us/npnboost/packed.jpg)

Here's how it looks on the outside. The unique hammertone finish and recessed "knockout" designs are some of the details that boutique pedal builders gloss over:

(http://music.breaffy.us/npnboost/housing.jpg)


Since I didn't want to wait around for shipping, everything was bought at the local radio shack, except for the 'housing' and DPDT switch. Most of what I bought came in packs of two or five, so I'll make another with a different transistor and then compare and contrast.

Since I don't see a shopping list anywhere, I will list the parts I used:

276-158 component pc board
276-2009 MPS2222A NPN transistor
276-2016 2N3904 Transistor (for the second build)
276-1995 8-pin low profile IC socket
272-1027 47uF electrolytic capacitor
272-1025 10uF electrolytic capacitor
272-1026 22uF electrolytic capacitors
272-1069 0.1uF polyester film capacitors
271-1126 10kOhm resistors
271-1347 110kOhm resistors
271-1342 47kOhm resistors
270-324 Heavy-duty 9v battery snap connector
271-1714 5kOhm potentiometer linear taper
274-252 1/4" mono jack
274-312B 1/4" stereo jack, three-conductor

wire, solder, enlosure, DPDT, drill etc were all on hand.
 
I think that's about it.

Now, it's off to Ebay! ......Custom handmade! 60's mojo! 70's grit! etc etc.  :roll:
Title: Please let me know if you have built this project
Post by: bisser_hot on January 11, 2005, 07:55:15 PM
Hi aron,

It is probably just me beeing a bit suprised over the noise. The noise is very loud with the distortion on, but my distortion channel is very noisy anyway.
The clean channel gets a bit noisy, but that is probably because of the transistor and the missing housing.

I also realized that my humbucker (an old super distortion) is quite noisy on my little practice amp, it's not that on my all valve '72 amp, so i shoud probably blame Marshall for most of the noise :)

thanks for considering the problem!

Best regards

Christian
Title: Please let me know if you have built this project
Post by: Jehle on January 13, 2005, 08:20:48 PM
Hey, it's working!  :D

I had to pick some other values that were "good enough" to make it work.  Namely,
I used a 10K pot for the gain,
50uF for the output capacitor,
An... orange... non-polarized cap in place of that .1uF input cap

Here's all the bugs put in my bread board prototype thingamajig.
 (http://home.hiwaay.net/~jehle/DIYStomp/JehleNPNProj.jpg)

And... as a bonus... here's what it sounds like...
Jehle-NPNProject.mp3 (http://home.hiwaay.net/~jehle/DIYStomp/Jehle-NPNProject.mp3)

Gain 100% on the NPN booster
Clean guitars trippled and panned 100% left, middle, 100% right
Dirty guitars mono, center, run through a Marshall setting on the SansAmp.

Enjoy.

Thanks Aron!  :D
Title: Please let me know if you have built this project
Post by: scoho on January 24, 2005, 03:28:34 PM
I built this the other day, and it works well. This was my second attempt at a build after trying to set up my own project from scratch for my first try. That sure was a mistake! It took me several tries to get this one wired up correctly, and I'm not even using a switch!

I play a Strat into a '76 Vibro Champ. I can set the Champ on about "2", and it sends the Champ into overdrive after turning the pot about halfway.  The boost is clean and nice before the overdrive kicks in pretty suddenly.  It makes the amp a lot louder. Normally I wouldn't hit overdrive until like "8" on the amp.

Thanks for posting this project! I had never soldered a thing before and was only able to get started on this hobby with the detail posted here.

--Scott
Title: Please let me know if you have built this project
Post by: aron on January 26, 2005, 04:28:47 AM
COOL!

Congratulations!
Title: Please let me know if you have built this project
Post by: Karmasound on February 01, 2005, 10:10:54 PM
I built this sucker today an it sounds great. I'm going to try swapping trannies around.


For me it was easier to populate the board first. Like looking at the final pick with the parts in their order then go to the schematic and underside picks and solder it up. :)


Time to do the Diode compression :wink:
Title: Please let me know if you have built this project
Post by: aron on February 02, 2005, 06:15:15 PM
Congratulations!!!!! You are well on your way!
Title: Please let me know if you have built this project
Post by: larseko on February 09, 2005, 05:44:21 AM
I built the booster during the weekend. A very nice sounding unit that suits me perfectly, as I have had problems with the boost channel of my tube amp (Marshall JCM 900) recently. Now I'll just try and use this booster instead; I think it will be a bit warmer in the tone than the JCM900 fuzz, which is a bit trebly.

I had no problems building the project. I have a bit of soldering practice, but just from assembling some precompiled gadgets earilier this autumn. At first the effect wouldn't make any sound, but then I discovered the battery was out. Swapped the battery, and the "pedal" (lump of wires and components is more like it) came alive.

Only thing is that I bought a "switchable" mono jack for input instead of a stereo jack. Is there a way to make this work in the same fashion as the stereo jack to avoid battery drainage?

I also think I will include a 9vdc input jack in the final assembly to hook it up to my power supply. Is it just to connect this as if it was a bettery, without adding any more components?

At last I'd just like to thank Aron for making this site and all you other people who contribute with so much for a novice like my self who tries to find out these things all by the net...


Best,

Lars Erik, Norway
Title: Please let me know if you have built this project
Post by: KORGULL on February 09, 2005, 06:13:27 PM
Here is some instructions showing how to add a DC power jack - without disturbing any of the wiring you have already done - all you need is the jack and another battery snap. http://www.generalguitargadgets.com/index.php?option=content&task=view&id=178&itemid=200

Here is some info explaining the other way to do it - you won't need the extra battery snap, but you will need to disconnect some wires that you already have hooked up.
http://www.diystompboxes.com/sboxforum/viewtopic.php?t=23676
Good luck.
Title: Please let me know if you have built this project
Post by: larseko on February 10, 2005, 03:48:31 AM
Thanks, but I already was going to change some leads and assemble the box, so I just wired the dc jack as I would have wired a battery snap. I only had two connectors on it, but I won't be using batteries a lot anyway. Now I'm only waiting for the switch from Aron, and it'll all ready to be wrapped up. I'll post some pics as soon as it's ready.

Lars Erik
Title: Please let me know if you have built this project
Post by: adgators89 on February 21, 2005, 01:08:21 PM
Well, I got it to work on my third try...third times a charm!  that's sad to have to say that for such a simple project, but oh well.  It doesn't ahve as much as a boost as I would like, anybody tweak it for a little more boost, let me know what you did.  I also would like to now try it over and make it into a distortion pedal.
Title: Please let me know if you have built this project
Post by: 6x2 on April 21, 2005, 06:26:30 PM
Hi,

I built this booster, worked fine the first try! :D I used a 2N2222 - simply cause it was the easiest one to find... DPDT instead of 3PDT. I'm looking at other transistors to test on it, see how it changes the sound...

I'll be testing the pedal to a couple of amps on a recording session on saturday if I manage to get it into the case by then (I'm an recording engineer with rather limited guitar and electronics skills, working on esp. the latter at the moment...) .

Thanks for the great project, it's a good one to start with. I built a Fuzz face clone too, but it didn't work too well, I have to get back to it.

Looking forward to building more stompboxes...

Cheers,

6x2
Title: first try
Post by: JIG on April 22, 2005, 05:36:03 PM
Build it this afternoon with parts from Rat Shack. What an expensive way to go! What the heck, for your first build you can spend a little money learning.

Didn't install a switch or led as I used it trough my Loooper. Works very well! Used a 2n2222 trannie, and have a couple of different types to play with. The boost control seems to do very little unitl you get to noon and at 3 o'clock it gets very dirty in a not so good way! But in its usable range it sounds very good. Used it in front of my 6V6 plexi, my P1eX and Silverface Champ with pleasing results. Stick the ZW-44 in front of the booster and HOLY DISTORTION Batman! Lovely! :twisted:

Will probably tinker with it some more and put it in a hammond box. Now I am hooked. Have a few projects I want to build.

Thanks Aron!

JIG

Will post pics when I figure out how to do that!
Title: Please let me know if you have built this project
Post by: aron on April 22, 2005, 09:08:51 PM
>Stick the ZW-44 in front of the booster and HOLY DISTORTION Batman! Lovely! Twisted Evil

Cool!
Title: Please let me know if you have built this project
Post by: vanhansen on April 25, 2005, 10:54:17 AM
Quote from: aron
>Stick the ZW-44 in front of the booster and HOLY DISTORTION Batman! Lovely! Twisted Evil

Cool!


Funny, I was thinking about this last night.  Didn't get a chance to though.  It was too late when I FINALLY got done boxing it up in an effort to clean up my bench.  This circuit has been sitting on my bench like a disected frog since I built it late last year.

I have to say, I really do like this boost.  I like how it boosts the sound across the board rather than just being a treble booster.  It's super quiet too when run through the clean channel of my practice amp.

The only problems I encountered when boxing it up were wiring issues.  I had my effect in/out wires reversed on the 3PDT switch and my led wired backwards.  :oops:  My audio probe proved to me the circuit was still working and pointed right to my error.  No pics of it yet but I should have a few in a few days to share.

If any beginners haven't built R.G.'s audio probe, do so.  It should be one of the first DIY tools you make.  You'll be glad you did.

http://www.geofex.com/FX_images/audioprb.gif
Title: Please let me know if you have built this project
Post by: Jehle on May 24, 2005, 05:40:22 PM
Quote from: aron
>Stick the ZW-44 in front of the booster and HOLY DISTORTION Batman! Lovely! Twisted Evil

Cool!


I did something similar.  I put the booster after my SansAmp GT2.  It was extreeme!  It was the closest to the snappy Jeff Beck tone that I've ever been able to get.

I tried putting the boost after the distortion because the other way there's a little too much hiss.  The noise is amplified by the SansAmp.  It's okay that way, but it's much more quiet the wrong way around.
Title: Please let me know if you have built this project
Post by: H4T on June 26, 2005, 02:01:56 AM
I built the pedal and got it working! I put it in a fairly small, plastic RadioShack enclosure (which I guess is highly frowned upon, lol).

No labels yet, but I may add some later. I don't plan on having any other pedals of mine looking like this one, so it probably won't be a problem. So, here's some pics!

(http://img.photobucket.com/albums/v704/h4t/Gear/pedal1.jpg)
(http://img.photobucket.com/albums/v704/h4t/Gear/pedal4.jpg)
(http://img.photobucket.com/albums/v704/h4t/Gear/pedal2.jpg)
(http://img.photobucket.com/albums/v704/h4t/Gear/pedal3.jpg)
Title: Please let me know if you have built this project
Post by: aron on June 29, 2005, 03:36:45 PM
Good Job! I still have my first pedal in a similar plastic box.
Title: Re: Please let me know if you have built this project
Post by: criss on October 08, 2005, 09:13:51 AM
Aron

Thanx a million for this site and all your work .  I ve been interested in trying to build my own stompboxs for years , but like may others have been to worried about all the schematics ( thinking its all to hard )

Well after i found this site i seen your booster section and thought i can build from that ( exellent how to pics etc )  , i would love to see other fairly  easy projects in the future if those in the know how had time .  Anyway i went out grabbed all the bits , totaling around $12 Au and in a few hours had myself a booster and a new hobby .( yes it worked first time , even i was amazed )

And i must say the booster is very very nice , i still need a enclosure but once im done boxing it all up ill post my finished project .

once again i can,t thank you enough for giveing me the confidence to finaly take on this hobby .

Title: Re: Please let me know if you have built this project
Post by: krister on October 30, 2005, 10:05:50 PM
Hi Aron,

I've built two of these the first one worked just fine after I wired the pot to the right spot.

On the second one I've built, I have a problem I can't seem to figure out. When I push the guitar cable all the way in to input jack there is no signal. If I push it in half way I get signal. I have the input wired to tip, neg. from battery wired to ring and sleeve wired to ground on the board. Thank you for this awesome project and the invaluable information.

Kris
Title: Re: Please let me know if you have built this project
Post by: thepannist on November 14, 2005, 12:08:11 PM
 I have built this project.  I started out on breadboard, made a bunch of mistakes, finally learned how to work a breadboard and got it working.  Then I moved it to perfboard, made a bunch of mistakes, got that working.  Now it is in the box and everything works fine. I noticed that the resistor going to the LED was too low, so it is super bright.  Since I only use this pedal with wall power, I guess it doesn't matter as far as battery consumption goes, but it is still frickin' bright.  So, I'm definitely going to change that soon.  But the sound is still  great. 

Next stop, painting up the box!

Thanks for the great project,
Chris
Title: Re: Please let me know if you have built this project
Post by: cx_deluxe on December 13, 2005, 09:15:34 AM
I built it, it works.

Built on "experimentor 350 breadboard" for debugging purposes.  This is the first thing I have built since my crystal radio kit days!  Feels good.  Sounds good.  (bass-y) fuzz w/ big volume boost on clean channel of 20w solid state peavey. 

Problems:
At first it made a big volume drop when switched on. 

My advice for people who get a volume reduction or weak farting signal: Go back to the schematic!

I built from the tutorial (which was very helpful) and tried to debug from there.  Don't.  After you've worked with this thing for a couple of days the schematic will make sense at a glance.  In the end, I pulled off all of my resistors and re-ran them by looking at the schematic alone.  Had it working in 5 minutes.  Don't beat your head against the wall, use the schematic!  I was able to and I have no previous experience with reading them at all.
Title: Re: Please let me know if you have built this project
Post by: DLH on December 14, 2005, 09:52:06 AM
Hi all,

I have a question about this project.  I'm the rythym guitarist and vocalist in a  heavy blues/ jam band (e.g. Gov't Mule). I'm looking for a pedal that will add just a bit of bite to my clean tone.  I've been using a Ibanez TS-7 Tubescreamer for the bite on my clean tone and a Daddy-O for some crunch. I recently had Analogman mod the tubescreamer and I will now use that for crunch. I"ve never been completely happy with the Daddy-0. It seems to effect the tone of the other pedals. I call it the tone-sucker, so I'm taking that off the board.  My Amp is a Peavy Classic 50 4X10, but I can't really get that bitey clean tone without turning to 11, so I'm looking for something to replace the tubescreamer in doing that.  I just completed "The Tweako" from Small Bear Electronics so I have at least a minimal understanding how to build a pedal.

All of that is a very longwinded way of asking if this boost will give me what I'm looking for: some bite on my clean tone.

Thanks
Title: Re: Please let me know if you have built this project
Post by: aron on December 14, 2005, 12:26:08 PM
It might give you what you want. Perhaps all you need is a treble booster (a slight treble boost). Try fooling around with the input cap on your Tweako (assuming it's close). Make the input cap value smaller.
Title: Re: Please let me know if you have built this project
Post by: DLH on December 14, 2005, 12:51:44 PM
Thanks Aaron.  I feel somewhat comfortable working with a circuit although my soldering skills leave a great deal to be desired.  I'm been reading your board all morning and I have learned a great deal,  I friend of mine has been telling me I need to build a treble booster for some time. Maybe I should do that. I think Tonepad has a ready to solder board and plans. I might go that way.
Title: Re: Please let me know if you have built this project
Post by: Roobin on December 14, 2005, 02:57:02 PM
DLH: if you want a slight 'bite' to your clean tone to give it a slight hard edge, try a marshall Bluesbreaker . I'm using the original off GGG, and it adds a slight hardness ot my tone. Not much gain/drive, and a bit fuzzy when you try and turn the gain up, but apart form that, if you are able to settle with a bit less drive, then try the BB. Not sure about the BBII.
Title: Re: Please let me know if you have built this project
Post by: DLH on December 14, 2005, 03:01:26 PM
Thanks Roobin.

the Tubescreamer gives me plenty of drive. And The Tweako has very good crunchy tone also.  The band's sound is heavy (not metal by any stretch) and thus a pristine clean sound is not warranted, so I like a little bite when I'm not using the overdrive.  I'll check out the Bluesbreaker.

DLH
Title: Re: Please let me know if you have built this project
Post by: somasix on December 20, 2005, 06:01:33 PM
All right, newbie question.  Built this today using Radio Shack parts.  Used a 2n222 transistor in a Dip8 socket.  It's facing the right direction.  I know it's kinda working cuz when I put it in the signal chain, my amp volume kicks up quite a bit, hums and buzzes, but no guitar sound.  Followed the schematics and pics exactly.  The only time I got a guitar signal is when my girlfriend played and I closed the circuit by holding the stereo in jack and the mono out jack tightly in the web of my hands.  Even then it was really farty and buzzy. I could use a little debugging help.

Thanks sincerely,


Jason
Title: Re: Please let me know if you have built this project
Post by: rhys on January 03, 2006, 03:45:56 PM
i built this project this weekend with a 2n2222.  right now its in a box with a toggle switch and no led b/c i didn't have a 3pdt.  fun project though.  my only problem is that i pick up a radio station when the boost is maxed out--pot turned up to 9 or 10. 

i had a similar problem to jason's for a while--finally figured out that i had not connected the ground by running a wire from the input sleeve lug to the out sleeve lug.  now, i just have the radio station.  it's a country station if anyone was wondering.
Title: Re: Please let me know if you have built this project
Post by: Jayco on January 05, 2006, 11:04:17 PM
Aron,

Built this last night...  works nicely.

Not sure I care for the sound of the distortion on it when its maxed (using an NTE123AP which the guys at the parts shop told me was equivalent to a 2N2222)... I also used a Radio Shack film cap for the .1uf input cap... which could have something to do with it.   The guys at a radio repair shop gave me "416P - Sprague - Taiwan - .1", but its an axial cap (looks like a HUGE resistor) so I'm not sure if that would be better or worse than the radial film cap from radio shack.

My boxes and switches come from Mouser tomorrow, so I plan on boxing this thing up this weekend. 

What do you think about the NTE123AP and the 416P?  Should I swap out the input cap and/or try some different transistors?  All I've got otherwise for transistors are a bunch from Radio Shack that SAID 2N2222, but the entire pack of 15 were random equivalents (2N5210, MPSA42, MPSA18,2N5088, 2N4401 - Not sure why I got those in a bag that was supposed to be 2N2222).

Otherwise the circuit worked great... no problems at all building it... just wanting to tweak it a little.

Thanks,
Jim
Title: Re: Please let me know if you have built this project
Post by: somasix on January 07, 2006, 04:10:38 PM
Finished it today on my second try.  I'm very pleased.  Now all I have to do is box it up.  I couldn't have done it without this forum.  Thank you.

Would the Kay Tremolo a good second project for a beginner?  I used to have one.  Loved the sound, the enclosure was unique to say the least.
Title: Re: Please let me know if you have built this project
Post by: AzzR on January 13, 2006, 10:11:48 AM
I built this and for soe reason i cant get it to boost unless i put the two germainuim diodes in that were meant to distort but dont.

Anyway it boosts really well with the diodes in and barely distorts at all which i must say i actually like better.

Because i have no real use for this project as a stand alone pedal i am going to use it as a gain stage in a ruby amp using the fender 3 knob tonestack. Using those three schematics (ruby, 3 knob tone stack and NPN boost by Gus Smalley) which order do they go in. Fom what ive read it should go booster, tonestack and then ruby. is this correct?

Thanks

Dream
Title: Re: Please let me know if you have built this project
Post by: zjokka on February 07, 2006, 04:53:25 AM
I finished mine before yesterday. Initiallly I tested it with headphone on my Boss ME-5, in order not to wake people up in the middle of the night. It works in the sense that I get a moderately acceptable signal, but the level is kind of low in comparison to the signal i get when pluggin straight in.

That makes me wonder how I could use it as a boostpedal if the volume goes down when I use the circuit. Even when fully boosted, the signal is still weaker than when straightjacking into the amp.

If I would have gotten no signal, fierce distortion of the guitar signal --> I would know I have a problem. Now I'm not sure.

I didn't have the 0.1F cap, so I put two 0.047F green chicklet caps (code 473) in series, so that should give me 0.096F right? Should be close enough.

Or did I get the wrong value output cap (can't check now, at work) to get such a reduction in volume.

Anyways, I have been long on the search for a beginner project in active circuit, and this is the ideal stepping stone, it seems. I should go on the tweak now, starting with the range control?

Any suggestion on the volume problem?
thanks so much in advance.
ZJ
Title: Re: Please let me know if you have built this project
Post by: woulfer on February 07, 2006, 08:46:27 AM
I am also a noobie, but if I understand correctly, with caps, their values double when put in parallel, and divide when in series. I'm sure somone will correct me if I'm wrong.

I finished my first build last night, and when boosted, the signal seemed to boost only mids and highs. Then, I rechecked my circuit, and had used a 10 uf cap in place of the 22 uf. I switched that out, and it is much better. It has a good boost with the pot all the way down, then if you crank it up, WOW!!
Title: Re: Please let me know if you have built this project
Post by: Jamforthelamb on February 07, 2006, 05:48:02 PM
Hey Aron,
Finished the circuit today. Waiting on a parts order for a stomp switch, and I've only run a keyboard through it thus far, but seems to be working just fine.

I've seen a mod around for this from doing a little searching, but the schematic for it uses a 2n2222a, and changes some of the caps. I built straight from the schematic here, and used a 2n3904. Is it possible that I could still do the "Range" mod with a 1k pot with a 1uf cap to ground on one of the legs ? I haven't experimented with it at all since I just got it working a bit ago.

Thanks,
JFTL
Title: Re: Please let me know if you have built this project
Post by: zjokka on February 08, 2006, 03:43:40 AM
I am also a noobie, but if I understand correctly, with caps, their values double when put in parallel, and divide when in series. I'm sure somone will correct me if I'm wrong.

I went googling and asked a friend last night and you're absolutely correct: I should put them in parallel for the values to add up.

Otherwise, I made a great limiter  :P  and learned something. I will re-do it tonight!!

thanks
Title: Re: Please let me know if you have built this project
Post by: aron on February 08, 2006, 04:22:37 AM
Quote
Is it possible that I could still do the "Range" mod with a 1k pot with a 1uf cap to ground on one of the legs ? I haven't experimented with it at all since I just got it working a bit ago.

Yep, no problem. You can also get a 2n2222 anytime later.
Title: Re: Please let me know if you have built this project
Post by: Jamforthelamb on February 08, 2006, 10:11:53 AM
Quote
Yep, no problem. You can also get a 2n2222 anytime later.

I have the trans. socketed, and plan on experimenting with a 2n2222 when I acutually get a guitar run through the circuit (I still haven't  :icon_redface: ). Is the 2n2222 prefered over the 2n3904 ?

I used Dragonfly's layout for this: http://aronnelson.com/gallery/album18/GUS_NPN_BOOST
How would I incorporate the mod into this setup ? I have it wired exactly as shown, but I haven't soldered the wires to the 5k pot yet.

Thanks!
JFTL
Title: Re: Please let me know if you have built this project
Post by: sjhusting on February 17, 2006, 02:05:32 AM
Hi Aron

built it the day before yesterday. It was my second shot at it; it worked this time. Played with it last night. The booster has a nice cozy relationship with my telecaster (which is the guitar I built it for) but my humbucker-equipped archtop doesn't like it much. Haven't tried it yet with my es-125.

thanks for your site, i've learned a lot from it.

steven husting
Title: Re: Please let me know if you have built this project
Post by: Gus on February 17, 2006, 07:44:22 PM


There is no best transistor for it.  What I mean almost any small  NPN Si transistor should work.  Some people like the lower Hfe ones and others the higher.  So try it and have fun.

Now when a boost/dist/fuzz circuit sounds good with a  single coil but not so good with a humbucker often reducing the input cap size can help with the humbucker.  Try rangemaster size input caps or try different sizes.  By changing the parts you can get the sound you want but remember what sounds good at home often will not sound good live because of the vol change and  open back speakers, making the input cap to the booster/dist/fuzz smaller can often help.

Title: Re: Please let me know if you have built this project
Post by: NCMercury on March 15, 2006, 05:39:48 PM
:D Just completed my pedal. Worked first time (once I had the transistor around the right way). I was surprised at just how good it sounds.
I used  a 2N2222A- Which was all I could find. Some parts are hard to get down here in New Zealand, but it sound great anyway.

Lessons learned:
1: Use smaller gauge wire
2: Use longer lengths of wire between components so they are easier to mount.

This was a fun project, anyone got any suggestions for a good second project?

Cheers Aron.
Title: Re: Please let me know if you have built this project
Post by: aron on March 16, 2006, 02:13:11 AM
I guess I would try a Fuzz Face. It's not too much more difficult.
Title: Re: Please let me know if you have built this project
Post by: aron on March 16, 2006, 02:15:27 AM
Hmmmm how bout this one?

http://www.diystompboxes.com/analogalchemy/pedals/antiquity.html
Title: Re: Please let me know if you have built this project
Post by: AzzR on March 16, 2006, 08:53:27 AM
Look pretty cool

What sounds are gotten from using the input diode?

Dream
Title: Re: Please let me know if you have built this project
Post by: aron on March 16, 2006, 06:21:54 PM
Smoother overdrive and slight compression.
Title: Re: Please let me know if you have built this project
Post by: Jereb on March 23, 2006, 08:22:20 AM
Yup... just joined the forum, and studied the schematic until my eyes got sore.  :icon_eek:   It took me a few tries (and the realization that I forgot to buy the transistor) to get it right, but it's working. A little high in tone for my liking, but I'll replace the 47 cap with something lower. Thanks for the great info you guys!
Title: Re: Please let me know if you have built this project
Post by: ChamberMonk on April 12, 2006, 11:18:25 AM
Ok I just finished it. For a first attampt im glad it works.

The huge booster nob is from the Ministry Of Defence lol.

(http://img233.imageshack.us/img233/1048/dscf39075gi.jpg)

I can think of a way though that would only have required a couple of bits of wire and a volume nob to work really though. All that work its a bit of a letr down when all u end up with is a volume boost. lol. ALthough if i put my amp to full i can get a cool asound efefct by spining the MOD boost nob lol.

I had no acceszs to a drill meaning i had to saw a square hokle and melt a round hole then selotape away!
Title: Re: Please let me know if you have built this project
Post by: aron on April 12, 2006, 05:40:52 PM
I LOVE IT!
Title: Re: Please let me know if you have built this project
Post by: eugewong on April 17, 2006, 01:10:52 PM
I needed 2 tries but I got it!

First time I was too ambitious, tried to get the board as compact as possible, led, 3pdt switch...the works. I got sound with that one, but no boost.

2nd time round, took the advice and just wired straight to the jacks, no switch, and after twiddling with the direction of the transistor, BOOST! And it does sound pretty good! Up till about 90% of the pot though, that last 10% is pretty nasty distortion. Nonetheless, it definitely sound booteek! Coz I built it!  ;D

I'm all excited about this now, thanks for all the help Aron!

btw, where can I get the wiring directions to wire up the pedal to be powered up by an adaptor?

Eugene

Title: Re: Please let me know if you have built this project
Post by: ChamberMonk on April 18, 2006, 10:58:46 AM
I LOVE IT!

Thanks :D

Im gonna start experimenting nextr just sort of ptuting bits in almost random places to start building a big circuit board which i oculd use for gigs if i join a band at some point. :)
Title: Re: Please let me know if you have built this project
Post by: patman on April 22, 2006, 02:12:30 PM
I just finished the board last night and I hooked it up and it worked!
I am still waiting for the enclosure to arrive. I can't wait.

I've been thinking about doing a MXR distortion + for my next build. Do you think that that would be a good second build?
Title: Re: Please let me know if you have built this project
Post by: aron on May 09, 2006, 01:58:04 AM
With patience, yes, you can build a distortion+. I did  ;D
Title: Re: Please let me know if you have built this project
Post by: Breke on May 11, 2006, 01:27:02 PM
I just recently finished the booster, and I must say I'm happy with the result! It gave a nice and cleand boost at lower levels and a slight, crunchy distortion when I turned the pot  close to max which I liked very much. It was really fun building it, and I will most definately continue exploring this vast and fabulous world known as DIY electronics ;)
Here are a few pics of the result:

(http://i67.photobucket.com/albums/h292/_Breke_/P1011339.jpg)
(http://i67.photobucket.com/albums/h292/_Breke_/P1011342.jpg)

The building went well and I didn't have any real problems until I was about to mount it all in the box. I can't understand how people are able to cram all the parts of larger projects so neatly in the encouslure, mine felt a bit like a mess even though it has only one pot and a small board, and I haven't even wired the DC-jack yet :P Ah well, I suppose I will be able to refine those skills sooner or later...

Thanks alot Aron, and all others who have contributed to this forum with questions and answers, it has been a great help!
Title: Re: Please let me know if you have built this project
Post by: Breke on May 11, 2006, 01:30:08 PM
Hmm, maybe I should have compressed the pics a bit more :icon_rolleyes:
Title: Re: Please let me know if you have built this project
Post by: aron on May 11, 2006, 04:15:13 PM
I LOVE IT!

IMPRESSIVE!
Title: Re: Please let me know if you have built this project
Post by: KORGULL on May 19, 2006, 09:35:05 PM
That actually looks like some neat wiring and soldering work there.
Title: Re: Please let me know if you have built this project
Post by: BGillis on June 01, 2006, 04:18:42 PM
Just finished... Sounds great... My first circuit. It took me 3 tries and taught me some valuable lessons.
Lesson #1 - Get new glasses
Lesson #2 - Until then, use a magnifying glass so you can read Lesson #1...  :icon_rolleyes:

This is a great forum. Can't believe it's 3 years old and I just found it.
I want to build the Umble but would rather use a PCB 'cause my soldering isn't the greatest. I tried the ExpressSCH & ExpressPCB software but I think I'm a little to electronically challenged to make the proper PCB. They can't use Pablo De Luca's PDF so I guess I'll start asking around to see if someone could send me or post the .pcb file from their ExpressPCB program. Otherwise I'll be wasting $51.00 I'm sure.

Keep Smilin'
Brian
Title: Re: Please let me know if you have built this project
Post by: alvintang on July 19, 2006, 05:48:54 AM
im finally done with all the soldering for the npn booster :icon_biggrin:i havent try it with my guitar yet as my amp just blew couple wks back, but the LED did work when i did a test just now. just hope everything will work in the end :icon_rolleyes:
Title: Re: Please let me know if you have built this project
Post by: Hiwatt25 on August 10, 2006, 10:54:55 AM
I built this project and really like it.  Thanks for a great jumping off point. Mine is noisy when it's turned all the way up and even picks up a local Indian music station here in Danbury.  Very funny.  I posted on this and RG gave me some good tips for eliminating the interference.

Here's a pictue in case anyone is interested.

(http://i104.photobucket.com/albums/m182/hiwatt25/IMG_2618.jpg)

Now, on to a fuzz...

Title: Re: Please let me know if you have built this project
Post by: aron on August 10, 2006, 04:41:13 PM
Looks great. Good job!
Title: Re: Please let me know if you have built this project
Post by: RobertUI on August 14, 2006, 04:48:45 PM
I'll take a picture when I have completed my mods (its already in pieces again) , but after successfully building a fuzzface, I finally did my homework as suggested by the guru's and built this project. I already prefer it to my MicroAmp.

I am adding the Volume pot as others have done here, but I am curious to know if I can add a tone control to this, much the same way that a tone control is hooked up in a guitar pickup wiring diagram. I am certain that it won't be that easy, but if someone could point me in the right direction, I'd certainly appreciate it. BTW This project was an amazing learning experience for me, even after having diddled around with a soldering iron for years, I can't believe how much I learned in the process (I experimented some).

Thanks to Aron and all of the other guru-s on here!
Robert

 :D
Title: Re: Please let me know if you have built this project
Post by: aron on August 14, 2006, 08:24:01 PM
Check out:

http://www.diystompboxes.com/wiki/index.php?title=Simplemods#Simple.2C_Easy_Mods.2FTips_.26_Techniques

(http://www.diystompboxes.com/pedals/lowpass.GIF)

This will work well. You can put it right before the 100K resistor on the end (or the volume control if you added one)

The "shortcut way":

10K outer lug to signal
wiper (middle) to .01uF cap lead
other lead of cap to ground

The "more correct way""
10K outer lug and wiper to signal
Other outer lug to .01uF cap lead
other lead of cap to ground

Both are the same and work. The more correct way is a little more insurance in case something happens to the wiper but either way works fine.
Title: Re: Please let me know if you have built this project
Post by: RobertUI on August 14, 2006, 09:15:09 PM
once again you come up with awesome information! thanks aron so much, for keeping the DIY world alive. i really do appreciate what you have to offer all of us!

sorry i missed your easy mod page, i understand what you've written here, and now i have an excuse to use one of the 10K pots that i have lying around :D

thanks again!
Title: Re: Please let me know if you have built this project
Post by: aron on August 14, 2006, 10:32:23 PM
Good luck with your mod!
Title: Re: Please let me know if you have built this project
Post by: RobertUI on August 16, 2006, 09:32:46 PM
I haven't been able to put the tone control in yet, but I wanted to ask a question before proceeding. I just noticed that the booster volume (which was obviously NOT a part of the circuit) brings my entire signal to nothing when I turn it all the way down. The exact same thing happens with my Fuzz Face which I have lived with, b/c I didn't really give it much thought until my buddy was checking out the pedal. I am fairly certain that I used a linear pot (was lying around) when I am now realizing that I should have used an audio pot, could that be my issue with both pedals? When you get the volume to what I would call 4, it starts increasing the volume past unity, but below that it ends up muting the signal completely.

The other question that I have is again something that I notice in both the fuzz face and the booster. When I drop my guitar volume the SLIGHTEST amount, I lose all of the subtleties of the effect, the volume drops completely and it seems like the effects don't work as they should (I can describe more if desired). When the volume on the guitar is pegged, both effects act exactly as I would expect them to, with no noise, and no other issues (other than the volume noted above). Is this normal behavior?

Thanks again for all of your help. If you would like some readings, I can get them for you, but this SEEMS like a simple issue that I should be able to work out. If you want to just tell me to go away, that'd be understandable too :D

Rob
Title: Re: Please let me know if you have built this project
Post by: Funk on August 17, 2006, 12:09:41 AM
I finished it a week or so ago when I got my switches (thanks Aron, they came superfast to Australia!) but I still haven't boxed it as I don't ave a vice/drill bits yet.

Just about to start the B. Blender which no doubt i'll break something!

Thanks!
Title: Re: Please let me know if you have built this project
Post by: aron on August 17, 2006, 02:39:02 AM
Quote
I just noticed that the booster volume (which was obviously NOT a part of the circuit) brings my entire signal to nothing when I turn it all the way down.

That is correct. It is a volume control. Part of volume is being able to completely turn the output off. If you don't want this, put a resistor in series (in between ground and the pot lug). Try 4.7K or so and it if is too soft, increase the value, if it's too loud, decrease the value of the resistor - or use a trim pot internally wired as a variable resistor.

>When I drop my guitar volume the SLIGHTEST amount, I lose all of the subtleties of the effect, the volume drops completely and it seems like the effects don't work as they should (I can describe more if desired).

More likely the guitar. Explore a treble bypass cap on the guitar volume control - it's probably the highs you are losing as you turn your volume down on the guitar.
Title: Re: Please let me know if you have built this project
Post by: RobertUI on August 17, 2006, 06:21:24 AM
Aron,

Thanks for the confirmation on the volume pot and the other info, this makes me feel like I didn't make this incorrectly after all :-) I'll post my progress. What a great learning tool this has become!

Thanks again,
Rob
Title: Re: Please let me know if you have built this project
Post by: aron on August 17, 2006, 07:45:01 PM
Fun isn't it!??

Check out the wirogram from Kinman's web site re: treble bypass cap

http://www.kinman.com/images/inside/toneWorkshop/tone/Strat_Wirogram.PDF
Title: Re: Please let me know if you have built this project
Post by: petesguitar1 on August 29, 2006, 08:57:22 PM
I've built quite a few bits and pieces now, and I'm having fun. I decided to have a crack at this one (my first perfboard) but to make it a little more challenging I did my own layout staight from the schematic. I used a 2N5088 and boxed it up. Works like a dream! Actually works so well that it's going to my second guitarists pedal board! Thanks heaps!
Title: Re: Please let me know if you have built this project
Post by: aron on August 29, 2006, 09:01:01 PM
GREAT!!!!!!
Title: Re: Please let me know if you have built this project
Post by: petesguitar1 on August 30, 2006, 01:28:19 AM
Well, couldn't help myself, had some bits and pieces lying around so I built another one, but this time I used DC power. I didn't have a 5k pot, so I used a 25k pot and although the taper is a bit off, it's still an arse kicking boost and it is whisper quiet. Now for the corker! I couldn't find anything to put it in, and had this spare so a Super Bright LED, a few extra holes and voila....

(http://www.petedonohue.net/images/guitars/Vox%20Boost.JPG)

The pot is currently inside the chassis, if I can find a small enough pot and know, I would like to put one in the middle of the "O" of VOX or I may put a SPDT switch in there to switch in and out a pair of clipping diodes - who knows!?!?!

Thankyou again Aron!
Title: Re: Please let me know if you have built this project
Post by: petesguitar1 on August 30, 2006, 04:27:33 AM
Well, it seems easy come, easy go! Was working fine, then I went and bought a 5k Pot, installed it and all hell broke loose. Now I get like a splutter fuzz kind of thing going on. It goes really loud and then cuts out, and then sputters. It's bizzarre. I've tried 2 5k pots so now I think I'll try my 25k again
Title: Re: Please let me know if you have built this project
Post by: aron on August 30, 2006, 05:33:22 PM
That is too weird. It should work properly with the 5K pot.
Title: Re: Please let me know if you have built this project
Post by: petesguitar1 on August 30, 2006, 08:05:09 PM
I think I may have bought some dodgy pots. 4 in a row all did the same thing, but when I put the 25k back in it worked fine. Speaking of pots, do you know where I can buy small ones (I buy mine from Dick Smith here in Australia and none of the knobs fit them. GRRRRRR.
Title: Re: Please let me know if you have built this project
Post by: aron on August 30, 2006, 09:28:51 PM
Small Bear sells the smaller pots. Did you measure your 5K pots? Turn all the way one way and measure from an outer lug and the wiper with your meter set to ohms. If you read ZERO, turn the pot all the way in the opposite direction and measure again.
Title: Re: Please let me know if you have built this project
Post by: petesguitar1 on August 30, 2006, 09:50:48 PM
They seem to be really inconsistent, so I'm guessing I got some bad ones - no biggie, I'll buy from smallbear  :) I'm going to add a switch for distortion, so I'm just wondering if this would work...

After 10uF capacitor, I will run a wire to the 2nd lug of a SPDT switch. 1st lug will go through 2 diodes (will 1N4004 work?) both of which are connected to ground. The signal runs through both of them then to the output. The 3rd lug of the SPDT switch will go straight to the output.

                                                                   [----------Diode-----Gnd-> 
                                                      LUG1      [----------edoiD-----Gnd->
                                 
                           ---10uF--------->  LUG2                                              ---------------Output
                                                       
                                                      LUG3       [--------------------------->

Sorry if that's really confusing (I wrote diode backwards to show it waqs going the other way!)
Title: Re: Please let me know if you have built this project
Post by: GibsonGM on August 30, 2006, 10:15:33 PM

The diode clipping looks good...the other lug is just unused to bypass the distortion.  Check out the AMZ page, they have tons of info on clipping!!  ;)
Title: Re: Please let me know if you have built this project
Post by: RobertUI on September 02, 2006, 08:30:47 AM
Aron,

Thanks for the confirmation on the volume pot and the other info, this makes me feel like I didn't make this incorrectly after all :-) I'll post my progress. What a great learning tool this has become!

Thanks again,
Rob

Well, I have it all completed, and now have my 3 knob booster with an LED. This thing's really sweet. I'm not sure how usable the tone control is at this point, but I may keep playing with that. Thanks again for the great info Aron!

Rob
Title: Re: Please let me know if you have built this project
Post by: cat on September 08, 2006, 04:49:13 AM
It works! Finally, after 2 attemps and much much trouble shooting, Ive got a circuit that works. I love the way it pushes my Fender Champ into overdrive heaven :) The volume swell is just phenomenal.

Great circuit.

Thanks to Aron and all that have helped answer my annoying noobie questions.

Cat
Title: Re: Please let me know if you have built this project
Post by: aron on September 08, 2006, 04:59:09 AM
Great! Congratulations! Can you tell us what problems you encountered?
Title: Re: Please let me know if you have built this project
Post by: cat on September 08, 2006, 06:19:53 AM
Well the problems I encountered were all my own fault.

Basically I used the wrong resistors in some places.

I felt proud of my DPDT no LED hookup diagram though  :D

(http://i3.photobucket.com/albums/y78/noor_noor/DPDTCONNECTION.jpg)

Cat

Title: Re: Please let me know if you have built this project
Post by: 2kas on September 08, 2006, 03:29:09 PM
So this is my first own-built effect, thanks to aron :).
I had some difficulties with it, cause it didn't want to work for me. The problem was that the input, the part itself, was bad, but now it's ok, IT WORKS! :)
The other problem is that I could only get a linear pot, and it really makes a difference. I've scaned all the radio-part shops in Vilnius(the capital of Lithuania, where I live..), and they didn't have any non-linear pots. It really sucks, still don't know what to do..  ???

As far as I am not going to use it for a guitar, I haven't made a box for it, it looks like this:
(http://img412.imageshack.us/img412/2605/ireng0001fr7.th.jpg) (http://img412.imageshack.us/my.php?image=ireng0001fr7.jpg)
(http://img307.imageshack.us/img307/6201/ireng0002mo9.th.jpg) (http://img307.imageshack.us/my.php?image=ireng0002mo9.jpg)
The soldering is terrible but, you know, I just need more practice.. :icon_rolleyes:
(http://img422.imageshack.us/img422/6924/ireng0003wu4.th.jpg) (http://img422.imageshack.us/my.php?image=ireng0003wu4.jpg)
Thanks again aron, for a really nice and usefull website!  :icon_idea:
Title: Re: Please let me know if you have built this project
Post by: aron on September 08, 2006, 03:53:54 PM
Good job. Just snip off the unused leads with a wire snipper.

Nice to see the work of others.
Title: Yessir, I did.
Post by: ubersam on September 13, 2006, 04:36:32 PM
I built this booster last night. I was looking for a clean boost to use after a TS Clone I'm building. I tried the LBP2 and my build was more like a very mild overdrive. Additionally, it did not seem to have added much in terms of volume. It sounded fine but it was not what I was looking for. The NPN Booster fits my needs better: cleaner and louder. It seems to add some treble though, giving the strings a bit stiffer 'feel'. Would adding a tone control, to bleed off some treble, help 'soften' things up a bit? I am also considering the addition of a volume level control. I drew up an NPN Booster schematic based on the G. Smalley original and included the tone and level circuits where I think they would go (in red, see below). Would this be correct?

(http://i112.photobucket.com/albums/n188/ubersam/schematics/NPNBoost_Variation-1.jpg)

Also, I added a pulldown resistor as a precautionary measure.
Title: Re: Please let me know if you have built this project
Post by: Gus on September 13, 2006, 05:57:55 PM
you might like this.

http://www.diystompboxes.com/pedals/gusOverdrive.gif

it has a mid boost and top end roll off with a small amount of parts
Title: Re: Please let me know if you have built this project
Post by: ubersam on September 13, 2006, 06:50:23 PM
Thanks Gus. It looks interesting. I'm trying to learn so I hope you would not mind some questions. Would R5/C3 be the mid boost, and the R7/C5 the treble roll-off? Referring to my diagram, would the tone and volume control ideas work?
Title: Re: Please let me know if you have built this project
Post by: Hiwatt25 on September 26, 2006, 08:35:25 AM
I just built this again for the second time only this time I added a mod (with help from others on the forum) that allows me to switch the input cap.  Now I can switch between treble and full boost.  Bitchin!  Thanks again Aron and Gus.
Title: Re: Please let me know if you have built this project
Post by: Shannon on October 03, 2006, 02:58:50 AM
Well, I just finished this the other day. I used this (http://aronnelson.com/gallery/album18/GUS_NPN_BOOST) stripboard layout though, as it's much more compact (and easier to use :p). I must say, this little thing can get pretty damn loud.

Here's a few pics. Keep in mind my camera sucks at close-up shots.

(http://img216.imageshack.us/img216/605/boosteryk9.th.jpg) (http://img216.imageshack.us/my.php?image=boosteryk9.jpg) (http://img176.imageshack.us/img176/4355/booster2bs0.th.jpg) (http://img176.imageshack.us/my.php?image=booster2bs0.jpg) (http://img166.imageshack.us/img166/9991/boostergutsmf9.th.jpg) (http://img166.imageshack.us/my.php?image=boostergutsmf9.jpg)
Title: Re: Please let me know if you have built this project
Post by: ubersam on October 05, 2006, 02:46:03 PM
here is my build outside the box:
(http://i112.photobucket.com/albums/n188/ubersam/DSCF0110.jpg)

I am using the booster after an option loaded TS, but instead of having two separate boxes, I have both housed in the same box.
(http://i112.photobucket.com/albums/n188/ubersam/DSCF0117.jpg)

Title: Re: Please let me know if you have built this project
Post by: Hiwatt25 on October 21, 2006, 08:11:58 PM
Okay, so I just build this again (third time) but for a friend this time.  Hey, it's a great little circuit why not go with a good thing?  Figured I'd include a picture this time.  The toggle just switches between input caps so you can have treble boost or full boost.  Thanks again to Gus for a cool circuit. 
(http://i104.photobucket.com/albums/m182/hiwatt25/Hahn.jpg)
Title: Re: Please let me know if you have built this project
Post by: aron on October 21, 2006, 08:56:24 PM
Nice!!!!!!!
Title: Re: Please let me know if you have built this project
Post by: PNG123 on October 23, 2006, 10:55:37 AM
Okay, so I just build this again (third time) but for a friend this time.  Hey, it's a great little circuit why not go with a good thing?  Figured I'd include a picture this time.  The toggle just switches between input caps so you can have treble boost or full boost.  Thanks again to Gus for a cool circuit. 
(http://i104.photobucket.com/albums/m182/hiwatt25/Hahn.jpg)

Is this mod easy to do?
Might aswell try it since i haven't got down to building this project yet
Title: Re: Please let me know if you have built this project
Post by: D-7 on November 25, 2006, 01:01:24 AM
Built the npn boost a few weeks ago and I have caught the disease (despite the numerous warnings).
Building both a bazz fuzz, a dist+ and even making my own housings from scrap sheet metal.
Title: Re: Please let me know if you have built this project
Post by: aron on November 25, 2006, 02:17:21 AM
Congratulations!
Title: Re: Please let me know if you have built this project
Post by: jcwillow777 on February 06, 2007, 03:51:29 PM
I started building this pedal today. I got it working, but without any switch. It sounded pretty good. That's where I started having problems. I tried to wire it up to a mono input jack, as in Brian Wamplers book on building effects pedals - beginners. It didn't work. So, I tried it to a stereo jack as in your picture, but the same results. My brain is fried. I can't think any more so I'm gonna put it away and jam for a while. I know the switch works, cause I pulled it off a pedal, not in a case that was working.
Title: It lives!!
Post by: jcwillow777 on February 07, 2007, 10:11:23 PM
I started building this pedal today. I got it working, but without any switch. It sounded pretty good. That's where I started having problems. I tried to wire it up to a mono input jack, as in Brian Wamplers book on building effects pedals - beginners. It didn't work. So, I tried it to a stereo jack as in your picture, but the same results. My brain is fried. I can't think any more so I'm gonna put it away and jam for a while. I know the switch works, cause I pulled it off a pedal, not in a case that was working.

I figured it out - the battery was too low voltage (6.67V) and the LED was burnt. This thing adds a lot of volume. Next is to put in in a case and add the 9VDC jack. Thanks for a great project Aron!!
Title: Re: Please let me know if you have built this project
Post by: aron on February 09, 2007, 10:59:09 PM
COOL!
Congratulations!

THANKS GUS!!!!!!
Title: Re: Please let me know if you have built this project
Post by: xnery on February 13, 2007, 10:07:03 AM
I built the boost pedal about a week ago and have really enjoyed using it.

I also tried the gus overdrive at http://www.diystompboxes.com/pedals/gusOverdrive.gif, and it was good. I was wondering if someone could recommend another relatively "beginner friendly" schematic for a heavy distortion using only 2N3904 transistors (with or without diodes). I'd really like to try my hand at a few more pedals before I order bulk parts online  :)

I'm glad that this forum is so helpful with everything.
Title: Re: Please let me know if you have built this project
Post by: aron on February 13, 2007, 03:01:08 PM
Try this killer pedal:

http://www.diystompboxes.com/analogalchemy/sch/jfetvulcan.html
Title: Re: Please let me know if you have built this project
Post by: jcwillow777 on February 16, 2007, 08:11:02 AM
Try this killer pedal:

http://www.diystompboxes.com/analogalchemy/sch/jfetvulcan.html

This pedal looks like it might be my next project, but I have a question on the schematic. I'm just learning how to read them. There are six resistors that are pointing to the top of the schematic with a triangle at the end. Are these all grounded, with the exception of the one that goes to the +9V? Or, are they all tapped into the positive?

Thanks in advance!
Title: Re: Please let me know if you have built this project
Post by: xnery on February 16, 2007, 03:57:12 PM
The up arrows should all go to the 9 volt positive. The up arrows and the grounding arrows are drawn differently and point in different directions so you can tell them apart. The sound clips of the vulcan that I have heard make me really anxious to build it  ;D

I had one more question of the boost that maybe Aron or someone could help me with. It boosts great, but I get almost no treble boosting with it. My lows and mids are louder, but the treble doesn't seem to be any louder. Is there a capacitor that I should change in order to balance it out?
Title: Re: Please let me know if you have built this project
Post by: aron on February 16, 2007, 08:46:15 PM
Quote
but I get almost no treble boosting with it

That sounds like something's wrong with it. Due to the high input impedance the booster should actually be a little brighter than you might be used to. At extreme boosts, it does seem to mellow a bit (with overdrive). The input capacitor is the one you can change to a smaller value for more treble boost.

Try a .01uF for the input cap and then try .005uF.
Title: Re: Please let me know if you have built this project
Post by: xnery on February 22, 2007, 01:44:43 PM
I ended up following the Build Pictorial step for step and now it works great. It actually sounds unbelievably good for only having a few components inside. I need to compare what I was doing to the pictorial and see where I went wrong.

I also got my parts from the DIYstore much faster than I had expected. :icon_biggrin:

Thanks again Aron
Title: Re: Please let me know if you have built this project
Post by: Short Circuit on February 22, 2007, 03:46:12 PM
Try this killer pedal:

http://www.diystompboxes.com/analogalchemy/sch/jfetvulcan.html

This IS my next project.
I am just waiting for all the parts to arrive.  :icon_mrgreen:

Mark
Title: Re: Please let me know if you have built this project
Post by: aron on February 22, 2007, 07:34:54 PM
Very cool!
Title: Re: Please let me know if you have built this project
Post by: xnery on February 24, 2007, 04:40:27 PM
I just breadboarded the jfet vulcan a few minutes ago, and it sounds great. It's only my second successful build (along with the Gus Smalley NPN Boost) and I am so pumped. The vulcan schematic is pretty straightforward and sounds great.
Title: Re: Please let me know if you have built this project
Post by: aron on February 26, 2007, 02:19:02 AM
It does sound good.

I like it very much.

Aron
Title: Re: Please let me know if you have built this project
Post by: tbone409 on February 26, 2007, 03:53:53 PM
complete noob to this
but me and my father set this up today, we'll solder tommorow
its been really fun, and i have learned more about electronics in 2 weeks than all the rest of the time put together
hopefully i can get this one working
then i'm off to build the real mctube II :icon_mrgreen:
thanks aron, i wouldn't have gotten into this without this forum
Title: Re: Please let me know if you have built this project
Post by: aron on February 26, 2007, 04:20:34 PM
Good luck with your projects!!!!!!
Title: Re: Please let me know if you have built this project
Post by: JeffreyC on March 01, 2007, 02:07:54 PM
I built this boost a couple of weeks ago and it worked the first time I fired it up!  Great instructions and layout provided - thank!  This was my first pedal.  I have some clips of it and I'll try and get those up so I can post a link.  Any tweaks suggested for the NPN boost?

Since then, I've built a Silicon Fuzz (which I'm still tweaking) and I'm now building a Tone Bender MK II Pro - this stuff is addicting!

Title: Re: Please let me know if you have built this project
Post by: aron on March 01, 2007, 02:59:41 PM
Wow, cool and congratulations!

The easiest tweaks are the input and output caps.

http://www.diystompboxes.com/wiki/index.php?title=Simplemods#Simple.2C_Easy_Mods.2FTips_.26_Techniques
Title: Re: Please let me know if you have built this project
Post by: enigmur on April 04, 2007, 03:53:49 PM
I built it last week, after playing with the connectors on a pot it worked fine! I was very surprised  :icon_lol:

I really need to get it into an enclosure so I can use it as a solo boost - it is going to be a very useful pedal.

I just need to order some 3PDT switches, BTW Aron that will probably be in 1-2 weeks (just gotta wait for this credit card thing to go through.)

I cant wait to be using this pedal!
Title: Re: Please let me know if you have built this project
Post by: JLbass on April 05, 2007, 09:28:39 AM
Just completed the NPN boost yesterday have yet to box it and need a switch, but both guitarists in my band loved it so I'm building 2 more.  I couldn't believe it when it worked I was so happy  :icon_biggrin:  I want to do a fuzz next, but don't know which I should attempt I've heard great things about and from the tonebender.  I'm a noob though and don't know how difficult the circut is.  I just signed up and made my first post here to let you know I friggen did it.  Thanks so much for helping me do this Aron!
Title: Re: Please let me know if you have built this project
Post by: aron on April 05, 2007, 08:20:59 PM
COOL!

Why not try a simple silicon Fuzz Face circuit?

You might want to check this one out:

http://www.diystompboxes.com/pedals/gusFuzzFace.gif
Title: Re: Please let me know if you have built this project
Post by: newbie builder on April 05, 2007, 10:48:19 PM
I had some free time so the other day so I decided to give this circuit a try. Breadboarded it up, decided I liked it a bit and made it on perf. I really enjoy the pedal- I added some silicon clipping diodes with a pot to control them and I'm thinking of either adding an input blend cap or a 500kpot attached to the two ends of a cap in the 500 to 600pf range so that I can better control bass response.
Very fun and nice little circuit! To my ears far superior to some other single transistor boosts like the LPB.
Title: Re: Please let me know if you have built this project
Post by: widdly on April 23, 2007, 09:32:39 PM
I built this over the weekend.  All the parts including the case, battery and sockets cost $13 Singapore Dollars which is less than $10 USD.  Any Singapore builders can find all the parts they need at Sim Lim tower, except the foot switch which can be had from http://www.soundwavesmm.com/ for $15 SGD.  If anyone knows of cheaper local suppliers for foot switches please post them.

I built this to plug my guitar into a laptop or my stereo and it works great.  I used a plastic case and didn't add a foot switch.  Sounds very hifi and clean which is exactly what I wanted and has loads of gain.  I used a 2N2222 transistor.

Thanks for the great project.
Title: Re: Please let me know if you have built this project
Post by: aron on April 24, 2007, 02:47:26 AM
ALRIGHT!!!!! Congratulations!
Title: Re: Please let me know if you have built this project
Post by: enigmur on April 25, 2007, 06:54:06 PM
By the way, I am currently using this wee pedal - it works great for clean boosts! It drives my tube amp to sound wonderful when cranked.

It doesnt do much at all on the distortion channel, but on the clean side with wah or overdrive it is perfect for solo's.

I put it in a small PVC junction box, perfect for it - and it's named the Red Rocket.

Very handy pedal
Title: Re: Please let me know if you have built this project
Post by: aron on April 25, 2007, 07:16:34 PM
Cool!
Title: Re: Please let me know if you have built this project
Post by: Red2112 on May 04, 2007, 08:35:13 AM
Hi Aron,

Thank you for this pictorial!  I have built this tree times, and I get confused at the last part where you say link your resent 100k resistor led with the 10k bias resistor.  How come its on the left side of the board now (10k), when at first, the 100k is on the right side of the board?

(http://i87.photobucket.com/albums/k159/Red2112_2006/build20029.jpg)

(http://i87.photobucket.com/albums/k159/Red2112_2006/finished20001.jpg)

I hope I make sences...

Best regards,



Mike
Title: Re: Please let me know if you have built this project
Post by: aron on May 05, 2007, 03:12:21 PM
hmmm I'm confused. The 100K is an output resistor. The 10K is a bias resistor. 100K resistor LED???
Title: Re: Please let me know if you have built this project
Post by: Red2112 on May 06, 2007, 05:01:06 AM
hmmm I'm confused. The 100K is an output resistor. The 10K is a bias resistor. 100K resistor LED???

Hi Aron,

Thanks for your reply.  Sorry for confusing you.   Lets see If I can clear it up for you, and me  :)

This is what you say:
"OK, now connect the 10K bias resistor to the 100K resistor that you just put in. Simply bend the 10K remaining lead and make it join the 100K resistor, then solder in place".

That makes sences to me, what I dont get is, that from my second picture (which is a copy of yours) you bend the remaining 10k bias resistor lead (vertical over the tranny socket which actually is solderd to the other lead of the 10k bias resistor) to the left of the board and the 100k is to the right of the board (or output cap), you get what I mean?  Also, the 10k bias resistor (second picture again) has three pads solderd, unless one of the pads is for bending porpuse, theres a extra solderd pad there, at least thats the way I see it and that might confuse others as well, dont know.


Just a suggestion Aron...

I know its a good idea to save space on the board, and of course if you want it to fit on a pedal caseing like the more narrow Hammond box, which I think is Ideal for a one nob stompbox like this, its the way to go... But, for a newbie, that might just make it all more confusing, seeing all those components tightly togther. 

I think it would be best to spread out the components on the board (as much as you can), for example all resistors are "flat" on the board so a newbie can get a better understanding of how evrething is connected.  Later on (on his next project, or the same one again), he could focus on saving space on the board.  Anyway, its just my suggestion Aron, I know a picture is worth a thousend words, but when your a newbie, your a newbie for all, and those biological trannys in your brain start to short-circuit  because you have been up all night trying to figure all this out  :icon_lol: and because you wanna get into this so much  :icon_cool:

BTW Aron, once I get this working, this first project is gonna be dedicaded to you and its gonna be called, "The Aron Baron", I hope you like the name... Oh and aim pretty good with an airbrush, so its gonna look real nice, and with your permission, I will post a nice pictorial of the whole airbrushing process and technic for others to get Ideas from. Tell me what you think...

Just one last question Aron, when I asked my local shop for a stereo jack and a mono jack, they gave me both with three pins on them, but they look diferent... is that comon?

Thanks Aron and good care.

Best regards,


Mike
Title: Re: Please let me know if you have built this project
Post by: Red2112 on May 06, 2007, 07:17:17 AM
I think I got it Aron! Mike bangs his head on the desk...thump..thump..thump!  I misunderstood the 100k resistor because theres two, the one next to the 10uf output cap (which for some dumb reason I thought it was the last 100k resistor to put in) and the tricky 100k resistor close to the input cap... Ah man, I feel so embarrassed  :icon_redface:

Terribly sorry Aron!  No wonder you got confused...

These things happens when you have twins too.. :icon_biggrin:

Well, lets think positive, maybe someone ran into the same confusion...

Sorry folks! I guess I need some sleep... :icon_lol:

I'll have to give it an extra coat of lacquer to make up for my mistake Aron  :icon_mrgreen:

Good care
Title: Re: Please let me know if you have built this project
Post by: aron on May 06, 2007, 02:05:40 PM
Cool! BTW, I agree with you about laying down the resistors. I did think about that, but once I started putting them in vertically, it's hard to go back to the old way with wasted space. But you are right, it would have been better to lay them down.
Title: Re: Please let me know if you have built this project
Post by: Muthauzem on May 13, 2007, 06:51:58 PM
OMG!!!!

I had a lot of troubles and a few resistors and capacitors wasted (soldered it in the wrong place and didn't have a desolder braid), but I've made it!!!

Now I have to find a enclosure and a way to drill it, but the circuit is working!!!

Thank you aron... It's a nice project to encourage begginers to move on to another pedals  :icon_mrgreen:
Title: Re: Please let me know if you have built this project
Post by: theburge0318 on May 28, 2007, 12:38:04 AM
I got this project finished up this morning and it works wonderfully!  The only trouble I ran into was 1) I had mis wired my DPDT switch which was fixed after a good night sleep and a fresh head and 2) resoldering/redesigning the circuit layout in order to trim the perfboard to make it fit in an MXR style enclosure.

This project has a spot reserved on my pedal board after I give 'er a name decal and a paintjob.  I'll post some pictures then.

I've been researching the DIY scene for a while and Aron, you have a fantastic site going.  I'm glad to be a part and can't wait for my next project.
Title: Re: Please let me know if you have built this project
Post by: theburge0318 on May 28, 2007, 12:51:14 PM
A few pics...

(http://i139.photobucket.com/albums/q295/theburge0318/npn/case.jpg)

(http://i139.photobucket.com/albums/q295/theburge0318/npn/board.jpg)

(http://i139.photobucket.com/albums/q295/theburge0318/npn/guts.jpg)
Title: Re: Please let me know if you have built this project
Post by: wo0d643 on May 29, 2007, 09:49:32 AM
I made this thing and it does nothing.  Eh, first off ive never done more than change some pots in a guitar before so...
 It the treble end of things  down a little.  I built it twice thought wow how easy is this, the first time.  So anyway i cant make it work.  And since i couldnt I decided id throw some extra stuff on the board and see what happens.  Well nothing changed same sorry tone.  I read for two days on the forum before i singed up.  I cant figure this out.  I guess i just meant to play through them not build em.


I dont know.
Title: Re: Please let me know if you have built this project
Post by: newfish on July 20, 2007, 06:11:24 AM
Yes.
Built on a piece of strip board - and it works beautifully.
Wired up using Millenium Bypass and makes a very handy pedal.
Nearly deafened myself with it turned all the way up.

Thanks for posting such a great beginner's project.

 :icon_wink:
Title: Re: Please let me know if you have built this project
Post by: aron on July 25, 2007, 05:44:08 PM
GREAT!!!!!
Title: Re: Please let me know if you have built this project
Post by: jvt on July 25, 2007, 08:33:04 PM
hi there!  ;D

I read about this booster when I was actually going to build a rangemaster, and I figured that since so many people had build this and seemed very happy with it, I would also give it a go. when I got this little thing fired up, I forgot all about rangemasters! I know they are different things but this one will keep me happy for a while! So I can be added to the list of builders of this little rockmonster!

I had a box that had been used laying about, and since it had some holes in it, I ended up with a special edition. In addition to the normal stereo jack switch on/off system, it has a main power switch, a main power lamp, and a lamp for engaged status, all just to fill holes  ::)

The lamps are really oldschool thingies from old radiocommunication equipment, and the box had been blue once, and now partially sanded off, I guess I will just write on it with a marker and then give it a clear coat, that will be a dirty oldschool looking beast :-)

And finally... If you get no sound when engaging the boost for the first time, dont be metering about inside your booster for half an hour (like I did...), before you have checked that you did not swap in and out jacks...  :icon_rolleyes:
Title: Re: Please let me know if you have built this project
Post by: newfish on August 02, 2007, 10:46:02 AM
...so my next job is to put this booster and a Green Ringer in the same case with independant switching - to give a Boost / Boost with Octave / Octave only arrangement.

"we're gonna need a bigger box..."
Title: Re: Please let me know if you have built this project
Post by: aron on August 02, 2007, 02:45:41 PM
Way cool. I love the Green Ringer too!
Title: Re: Please let me know if you have built this project
Post by: micro on August 04, 2007, 10:43:06 PM
Took two tries but only because i had wrong parts in the first. Sounds great!!

(http://farm2.static.flickr.com/1236/1012472151_6e983012c5.jpg)
Title: Re: Please let me know if you have built this project
Post by: Thomas.R on August 11, 2007, 05:50:07 PM
built the boost as my first project. It worked on the first try. :icon_biggrin:
Title: Re: Please let me know if you have built this project
Post by: burgoofj on September 17, 2007, 10:57:10 PM
Hi all,

I've built this boost using Aron's highly detailed instructions.  Rushed out to Radio Shack one Sunday morning and they had all the parts except for the only pot they had had a big long shaft.  Anyway I put the thing together, without a box or switch at first, and it worked, really noisy without a box but it worked.

Since then I've got a box, switch, and led.  Put it all in the box and it didn't work, heh.  Worked out all the kinks and now I've got a hand made boost pedal.

It still needs painted but here it is:

(http://mysite.verizon.net/vze3wvd4/GuitarStuff/Boost2.jpg)

Talk about a rat's nest:

(http://mysite.verizon.net/vze3wvd4/GuitarStuff/BoostGuts.jpg)


Thanks to Aron and Gus Smalley.  This was quite fun.  I've started on Gus' Fuzz Face.

Title: Re: Please let me know if you have built this project
Post by: Fuzzy on September 25, 2007, 09:38:36 PM
Yo, word to your mother's uncle. I just got into the diy pedal scene and it's awesome.
I finished the beginner project. I forgot to read the part about putting the transistor into the socket. I stuck a pitchfork jumper in there and the pot worked in the wrong direction, it lowered the volume and didn't sound good at all. I figured it out and now the pedal sounds awesome. The boost really does boost and it starts fuzzing out when you max it. The pedal has a good time rock-n-roll feel which is cool. Thanks Aron. I think I'm going to try a fuzz face pedal next. What I'd like to do is make a pedalboard consisting of only pedals I've made. That would be awesome.

-Fuzzy

Here's a crappy webcam pic of the boost. I found everything at Radioshack, except the switch which I ordered and the transistor I found at an electronics place downtown. When I get a better cam I'll post a better pic.

(http://img170.imageshack.us/img170/5264/boostuw2.jpg)
Title: Re: Please let me know if you have built this project
Post by: aron on September 26, 2007, 12:25:25 AM
Nice! Much better than my first build!
Title: Re: Please let me know if you have built this project
Post by: james9 on October 23, 2007, 02:20:44 AM
Hi aron

I'm looking for a simple delay or overdrive that i can make on perfboard

Thanks
Title: Re: Please let me know if you have built this project
Post by: aron on October 23, 2007, 03:02:56 AM
I don't know if there is a simple delay.

Try this one. Big bang for the money:

http://www.diystompboxes.com/smfforum/index.php?topic=18376.0
Title: Re: Please let me know if you have built this project
Post by: tikigod4000 on December 10, 2007, 03:22:49 AM
just finished it today. i haven't had a chance to test it out a whole lot yet.  also its housed in modified Tupperware but it works and i feel awesome and plan to make many more soon
Title: Re: Please let me know if you have built this project
Post by: aaroneous on December 17, 2007, 06:58:04 PM
This was my first real electronics project, and I finished it in a day and a half. Would have been less if Radio Shack was open 24hrs.  ;D
It worked first try and sounds killer! Big thanks to Aron for taking the time to do the step-by-step.

Now I'm off to start asking dumb questions.

~A
Title: Re: Please let me know if you have built this project
Post by: aron on December 18, 2007, 03:05:36 AM
COOL!
Title: My modified booster pedal
Post by: esdiezy28 on December 22, 2007, 09:22:25 AM
I built this project and used an old DS-1 I had laying around the house I wasn't using. Changed the 5k Drive pot to a 20k drive pot and changed the elecrolytic cap connected to lugs 2 and 3 of the drive pot from 47uf to 10uf. Added a SPDT switch from the output to ground and ran two diodes and a 500pf cap parallel to the switch, then switch to ground. Don't think the volume pot I added works so well but the boost is awesome, and it WORKS! Thank you for all the support online everyone! ToNy

P.S. hope to post some pics from it when I can
Title: Re: Please let me know if you have built this project
Post by: ThatHilleyBoy on December 24, 2007, 07:54:47 PM
I finished this about 2 months ago, and it is an awesome boost! I'm hooked. I've already modded my crybaby and made it true bypass, and i am working on a fuzz face and modifying my boss sd-1.
this is a great site, thanks aron!
Title: Re: Please let me know if you have built this project
Post by: aron on December 25, 2007, 12:51:37 PM
wow, great job guys!
Title: Re: Please let me know if you have built this project
Post by: aaroneous on December 27, 2007, 05:22:51 PM
Here's a pic of mine all finished up:

(http://i37.photobucket.com/albums/e77/aaroneous/Stompbox.jpg)

The box is a German army butter tin I got at a surplus store for $2, so I'm calling it "The Butter Booster".  ;D
Title: Re: Please let me know if you have built this project
Post by: evilpaul on January 04, 2008, 11:03:47 PM
I was inspired to try this project after I saw it suggested in a couple of threads about boosters recently.

Here's what I posted in the Pictures! thread:

(http://i3.tinypic.com/7wtmg3l.jpg)
I built the Gus Smalley NPN Boost yesterday. I normally etch, but I enjoyed doing a perf layout, I'll have to try it again in the future.
I've started on gaussmarkov's DOD 250 on a breadboard project too. I don't consider myself a beginner, but it was really enjoyable to put together a nice easy circuit and learning how to prototype better is a definite plus.

The tin was something I picked up from the $2 store last week, it's only 3cm deep, so I think it would stand up pretty well if I used a stompswitch, I just didn't have one handy.
Title: Re: Please let me know if you have built this project
Post by: joeythegeetarman on January 05, 2008, 10:46:45 PM
Got it! not too tough actually! I followed the picture build, but I rushed it and decided after my first test run of it, picking up some pretty sweet radio stations, that I would just start over and follow the schematic and make the board a little bigger. I did it true bypass with a fancy blue LED. I'll probably add a range control to it. After completing the second one I went back and tested the first board I made and it was perfect! I'll probably build a second one. Thanks for all the help! oh PS, I may have done it wrong but when I tried to do the 3PDT with the LED that in the build pictoral thread, it didnt work, so I went to www.generalguitargadgets.com and followed the wiring diagram for the 3PDT true bypass with LED on there and it worked great! I'm sure the other one works too, but I'm a little slow sometimes, so i just tried something new.
Title: Re: Please let me know if you have built this project
Post by: cpnyc23 on January 25, 2008, 07:39:15 PM
Done and done!

I've built a passive mixer & A/B switch but this was my first "pedal."  Worked on the first try!  Well, almost... the knob is backwards.  Turn to the right and the boost goes down... Left and it goes up.  Whoops!!  :icon_redface:

I assume that this means that I wired the pot backwards.

I'm really impressed with Gus' design.  This thing is clean all the way thru.  Adds a nice bit of 'body' to the signal.  Although I made it true bypass w/ a 3PDT, it probably won't be bypassed much.  I think I'll be putting it in my amp's FX loop to drive my power tubes a bit farther into distortion.

FYI - I made it in a white enclosure with Lazertran decals & clear coated in polyurethane.  I don't know if I'll go the polyurethane route with a white pedal in the future.  Upon close inspection it has a bit of yellowing.

Anywho... Thanks Aron!!  I definitely have the confidence for deeper challenges!

-chris
Title: Re: Please let me know if you have built this project
Post by: curran on February 01, 2008, 11:39:34 PM
okay, I finally got this pedal to work on the breadboard, it was really hard. I have a very very difficult time reading/translating schematics to diagram and then to board. sooooooo I actually got the IC overdrive project too work before this one did. my big question about this pedal is that boost level. should it really really slam into the input of my amp???? when I turn it all the way up it distorts the input on my little solid state test amp, making me think there is something wrong with the pedal. how ever, when I put it into my dual rec head it is massive but still seems to clip the front end of the the clean channel. this is all fine and good if this is what it is gonna do at the top end of the knob.

Love Curran :)
P.S. I am an UBER NOOB at this and am still failing to get the circuits to work after I put them on a vero board, they work on the breadboard but never on the final vero board. I know I am missing something massive and stupid here
Title: Re: Please let me know if you have built this project
Post by: aron on February 02, 2008, 01:03:07 PM
Yes, it should distort when you crank it up. Sounds like it working.
Title: Re: Please let me know if you have built this project
Post by: The French connection on March 03, 2008, 08:19:48 PM
Hi Aron, I've build the beginner booster and put it in a plastic case, everything work but i pick up radio interferences. Is it because i use a plastic case or maybe a ground problem with the input? Should i better put some foil paper inside the box for artificially make a Faraday's cage?  ???

Thanks!

Bonsoir
Dan
Title: Re: Please let me know if you have built this project
Post by: 12milluz on March 03, 2008, 08:45:52 PM
That should help but its difficult to do. Foil is kind of hard to work with inside a pedal. Another alternative would be a conductive paint, although it is expensive.
Title: Re: Please let me know if you have built this project
Post by: The French connection on March 03, 2008, 10:19:35 PM
Thanks Anthony. I guess i'll have to buy an aluminium enclosure...but i'll try the alu foil before.

Dan
Title: Re: Please let me know if you have built this project
Post by: 12milluz on March 03, 2008, 10:41:17 PM
Sure. The aluminum foil is just kind of a pain to glue inside the enclosure. It gets messy and such. They make an aluminum tape for heating ducts that works fantastically but is rather expensive. I've come to see that an aluminum enclosure is the easiest to work with, but definitely give the plastic one a shot!
Title: Re: Please let me know if you have built this project
Post by: aron on March 03, 2008, 11:26:42 PM
Yeah, after all these years, I just use aluminum enclosures now. They are easy to work with and there are some cheaper aluminum ones you can get. Not very strong, but still good. Those are bent aluminum boxes.
Title: Re: Please let me know if you have built this project
Post by: cpnyc23 on March 04, 2008, 05:49:14 PM
aron,

which cheaper enclosures are you referring to?  The ones by New Sensor/Bud or is there some other product that i'm unaware of?

Thanks
-chris
Title: Re: Please let me know if you have built this project
Post by: jonjon on March 04, 2008, 11:18:17 PM
i dont know if you still want to know if people have  built it. but i just did. had problems went through all the de bugging . couldnt work out what was wrong. so i started all over. then when i came to soldering the 47k resistor i noticed when putting the packet down that it was a 47. quick trip to the shop and got the 47k . and whamo ,works great .
thanks heaps for the schem
Title: Re: Please let me know if you have built this project
Post by: AceLuby on March 17, 2008, 10:47:55 AM
Aron,

Built this pedal this past weekend made completely w/ Radio Shack parts.  I had trouble w/ the jacks due to the 'extra' sleeves, which was frustrating at first, but a little testing went a long way.  Instead of a pushbutton switch I put a rocker DPDT on/'off' switch which also removes the need for an LED.  Also, instead of the 2N2222 transistor I swapped it for another I got at the shack which gave me a truer 'tone' and didn't color it so much (at work now, can't remember off the top of my head).  The 2N2222 transistor was very  buzzy when maxed (like a dist pedal) where as now it's much smoother.  Threw it into an aluminum casing I found and voila, a great 'boutique' pedal for cheap.  I really like it at the end of my chain on my one amp and in the FX loop of another to just give my tone more volume.  Very nice.

I'm going forward w/ an overdrive schem next.  During the project reading the schem became far easier than trying to understand the pics.  It was a lightbulb on type of moment.  I think I'm hooked...
Title: Re: Please let me know if you have built this project
Post by: aron on March 17, 2008, 11:01:07 PM
GREAT!!!!!!

Aron
Title: Re: Please let me know if you have built this project
Post by: ConanB on April 13, 2008, 10:41:48 AM
Worked flawlessly on the breadboard, and worked flawlessly once it was boxed up. I love it! The sound is great and the grit you get up high just purrs.

http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg532830#msg532830 (http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg532830#msg532830)

Thanks again Aron for this great site, and to Gus for a great little booster of course :P
Title: Re: Please let me know if you have built this project
Post by: aron on April 14, 2008, 05:13:26 PM
Fantastic!!!!!
Title: Re: Please let me know if you have built this project
Post by: dpote on May 23, 2008, 08:29:36 PM
Hi all,
I just finished this project today. It sounds great, and I had zero problems building it, thanks to this forum.
This has been really fun.

Thanks,
Dave
Title: Re: Please let me know if you have built this project
Post by: aron on May 23, 2008, 08:33:58 PM
COOL Dave!
Title: Re: Please let me know if you have built this project
Post by: arawn on May 24, 2008, 02:26:38 AM
built it, Cased it, Tore it apart to build other things, Great Project just not something I need in my signal chain. Thanks Aron it really is a great beginner project!!
Title: Re: Please let me know if you have built this project
Post by: drk on May 27, 2008, 07:03:48 PM
build it today to breadboard, it sounds really nice!! how can something so small do such a difference to your sound?! really amazing  :)
i've add a jfet before this circuit, and it worked really well too, worth a try  ;)
im gonna put it in a a/b pedal, still have to work on that, but will try to put an image when i finish(if i remember.. ehe)
thanks for the project  ;)
Title: Re: Please let me know if you have built this project
Post by: Switchblade on June 03, 2008, 01:21:20 AM
Hey aron, I'm posting here to say that, like everyone else, I made this project semi successfully, but I figured Id raise questions here instead of in a new topic.  Could anyone here help me? When I plug in the project, I can get a sound through (I'm not using it with a switch, I wanted a pedal that was always on) but at times, it will crackle pretty bad (maybe a grounding problem, can anyone clarify the precise points where I need to solder, coz I dont think I understood the diagrams) and furthermore, the 5k pot doesnt affect the sound at all.

Thirdly, I couldnt find a stereo jack and, like another in one of the other threads, I accidentally brought a mono switched jack. Is this what is causing the sounds perhaps? Thanks in advance, guys!
Title: Re: Please let me know if you have built this project
Post by: AceLuby on June 03, 2008, 11:05:30 AM
Ok, gonna try my hand at this...

Quote
When I plug in the project, I can get a sound through (I'm not using it with a switch, I wanted a pedal that was always on) but at times, it will crackle pretty bad (maybe a grounding problem, can anyone clarify the precise points where I need to solder, coz I dont think I understood the diagrams) and furthermore,

Since it is always on and you have two mono switches, just solder all the ground points together (input & output jack ground, board and negative of battery) and solder the +9v directly to the board.  This will drain battery even if nothing is plugged in though.

If you get a stereo input you solder the -9v to the ring(?) of the input jack and connect all the other ground points together.

Quote
the 5k pot doesnt affect the sound at all

There is something wrong here then.  Make sure there isn't a short on your board and make sure you aren't shorting to ground on the pot itself.

Quote
I couldnt find a stereo jack and, like another in one of the other threads, I accidentally brought a mono switched jack. Is this what is causing the sounds perhaps?

No, this is just draining the battery at all times and shouldn't have an effect on the sound.

The crackle you hear is probably a bad solder joint somewhere.  I would first check the solder points on the jacks and if everything looks good then I would check the board itself.

Hope this helps and if I made a mistake please correct me as I'm still learning too...
Title: Re: Please let me know if you have built this project
Post by: Switchblade on June 04, 2008, 01:34:50 AM
Im going to check the solder points now, I think youre right, since when it crackles, the LED on my powerbrick will flicker, as if somethings cutting out. Right now, I can get cleanish sounds if i turn it all the way up, but it crackles as i go down. If i turn the amp distortion on though, I get this almost 'thunderstormy' like sound with the white noise it creates. Clearly influenced by the guys at death by audio :P
Title: Re: Please let me know if you have built this project
Post by: Tom S on June 06, 2008, 05:16:12 PM
Hey aron,
Build this over this past weekend, got it to work on the first try.  I wired it up to ground the input during bypass like dano has on his page at http://www.beavisaudio.com/techpages/StompboxWiring/ (http://www.beavisaudio.com/techpages/StompboxWiring/).  The only problem I had with the pedal was a lot of buzzing when I pulled the plug out of the input jack while the output was still plugged into the amp, so I'm not sure if there's a problem with the ground on the output jack or not.  No buzzing at all when there's a plug in the input jack though.

Next up is an Orange Squeezer using a PCB from tonepad.

Thanks for this site!  I've learned a ton and it's been fun so far.

Tom
Title: Re: Please let me know if you have built this project
Post by: de-loused on June 10, 2008, 11:19:57 PM
built it! now i just have to make like 4 more because radioshack makes you buy at least like 5 of everything and i have like 20 or the same kind of transistor!  ;D maybe i will just look to buying my stuff here or something!
Title: Re: Please let me know if you have built this project
Post by: Renegadrian on June 11, 2008, 03:07:49 PM
Not my first build, but I enjoyed it so much...Nice sound coming from this boost!!!  :icon_cool:
The Valvecaster should be a mandatory second build... :icon_wink:
Title: Re: Please let me know if you have built this project
Post by: HoodieMcFoodie on July 06, 2008, 10:31:12 AM
Ack...

I had a great reply typed out to tell of my sucessful build of this project over the weekend, but my session timed out and I lost it all... :icon_redface:

Anyway I had fun, it worked first go, I had a few hurdles to overcome, but I did so, and I got a great pedal to boot.  :icon_cool:

I'll try and post some photos after I spray my enclosure during the week.

Big thanks to Aron and Gus and everyone else here for your wisdom and guidance and for doing it all before me which made building the booster so much easier.  :icon_cool: :icon_cool:


Regards,
HoodieMcFoodie
Title: Re: Please let me know if you have built this project
Post by: dreadpiratepedals on July 07, 2008, 09:59:06 AM
hi i built this last week, i really like it was an easy build i did it on vero and added the volume control also added an on/off switch as i only had mono jacks (Ive now brought some jacks and switches from here), this forum is a very very helpful resource and i have learnt how to read schematics because of it  ;D so thanks alot to everyone. I'm going to built the lofomofo next i think

http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg553806#msg553806 (http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg553806#msg553806)
Title: Re: Please let me know if you have built this project
Post by: sacktap on July 25, 2008, 02:01:07 PM
hi Aron, great proyect!! i just finished the board and it sounds great!...its my second proyect, i made a bluesbraker before, but im still trying to make it work :S
It was really easy to follow the tutorial watching the pictures! great job!
I just have a question because it really sounds louder when i activate de distortion, its ok? cause if im playing normaly, when i turn the distortion, the difference of volume its huge.
thaks for all the material in your page, sorry for my english....

mauro.
Title: Re: Please let me know if you have built this project
Post by: aron on July 26, 2008, 04:09:22 PM
Congratulations. You can also put a volume control on the end if you really want to. It's a booster so it sounds like it is working.
Title: Re: Please let me know if you have built this project
Post by: jonjon on July 29, 2008, 03:30:08 AM
i.e clean boost  :icon_wink:
Title: Re: Please let me know if you have built this project
Post by: Evad Nomenclature on September 04, 2008, 08:48:06 AM
Built!
Sounds great... it's LOUD.
Title: Re: Please let me know if you have built this project
Post by: turnstylepoet on September 18, 2008, 09:13:58 AM
I just finished building this last night and it worked the first time!  Woo Hoo!  Man, this thing is loud!  I can't wait to experiment with some different transistors.  Any recommendations?

I wired it directly to the jacks to see if it would work.  Now I need to wire it up with a 3pdt switch and box it.  Thank you Aron for putting this project together.  I am officially hooked.  :-)
Title: Re: Please let me know if you have built this project
Post by: aron on September 18, 2008, 12:38:51 PM
great! Congratulations!
Title: Re: Please let me know if you have built this project
Post by: Zen on September 20, 2008, 10:37:36 PM
Just finished 2nd attempt and it works great!  Surprisingly clean boost with a nice break-up at highest settings.  Not sure how much is the pedal and how much is my amp -- so it obviously sounds good!  This is exactly what you need if you want to be able to control the clean-to-dirty sound with your guitar's volume knob.   

Thanks so much for the step-by-step photos.  I am a visual learner with absolutely no prior experience working on boards.  This is exactly what I needed to get myself started. 

Question:  I use one of those great vintage amps ('65ish Supro Thunderbolt) which has only one tone control (it basically stays at 12 o'clock).  So, I was thinking of putting some tone control into this unit.  From my research, it looks like the New AMZ Tone Control (http://www.muzique.com/lab/tone3.htm) would be an easy way to "scoop" out my tone.  Has anyone tried this and/or do you think it would work (or would all the resister and capacitor values need to be recalculated)? 
Title: Re: Please let me know if you have built this project
Post by: turnstylepoet on September 23, 2008, 12:19:04 AM
I wired it up to a 3pdt switch and the bypass is working but the pedal volume is very low when the pedal is on.  Any thoughts?  It is pretty tight in the enclosure and I figure I have a component touching something it shouldn't  I'll open it up and see if I can tidy it up inside.

Until the, here is a picture of it in the enclosure.  :-)  Thanks again for this great project!

(http://farm4.static.flickr.com/3201/2880651123_fb47c4b8a3.jpg?v=0)
Title: Re: Please let me know if you have built this project
Post by: aron on September 23, 2008, 01:40:30 AM
Looks great. Did it work outside of the box? If so, then yeah, something's shorting on the inside.
Title: Re: Please let me know if you have built this project
Post by: mikemaddux on November 06, 2008, 09:14:27 AM
as of about 30 minutes ago, I completed the NPN boost.

(http://i381.photobucket.com/albums/oo252/mikemaddux/IMG_2121.jpg)

next, hack off the extra pot shaft, add a knob and possibly add 3pdt and LED

Does anyone know a way to add a toggle for low/high boost setting?
Title: Re: Please let me know if you have built this project
Post by: Zen on November 19, 2008, 12:56:46 AM
Hey guys and gals.  Update:  I did add the tone control with a scoop knob (New AMZ Tone Control wired backwards so min=flat, middle= mid scoop, max=deep mid scoop) and it sounds great.  (Roadhouse Strat through 65' Supro Thunderbolt, with EH Holy Grail)

But I noticed when I bypass it that I have basically just used the tone control to make the boost absolutely transparent.

At first I was bummed out that I wasn't getting much benefit, but then realized--hey, ADJUSTABLE TRANSPARENT BOOST!!
Title: Re: Please let me know if you have built this project
Post by: mattbanshee on November 24, 2008, 08:56:45 AM
Built the circuit, but it's not cased yet.  ;D Works but the pot seems to be very crackly, so I'm gonna replace it with a better quality unit, hopefully that'll sort it out. I used a 2N5551 transistor 'cause it was the easiest NPN to get hold of...
Title: Re: Please let me know if you have built this project
Post by: mikemaddux on November 25, 2008, 04:51:09 AM
Built the circuit, but it's not cased yet.  ;D Works but the pot seems to be very crackly, so I'm gonna replace it with a better quality unit, hopefully that'll sort it out. I used a 2N5551 transistor 'cause it was the easiest NPN to get hold of...

The pot is always crackly when you turn it.  Ive seen that in numerous posts.  something about the cap wired to the pot.
Title: Re: Please let me know if you have built this project
Post by: mattbanshee on November 25, 2008, 07:28:10 AM
Ah I see... well, that's a slight shame, because I was hoping to case it up and actually use it as a boost for slide solos :D

I'm itching to try building something else, but preferably something of the same difficulty level... my problem is I'm pretty much limited to builds that use parts that can be bought from www.maplin.co.uk (http://www.maplin.co.uk), as I'm in the UK and it's quite often difficult to get hold of strange parts. Any suggestions?
Title: Re: Please let me know if you have built this project
Post by: mikemaddux on November 28, 2008, 05:34:41 AM
Ah I see... well, that's a slight shame, because I was hoping to case it up and actually use it as a boost for slide solos :D

I'm itching to try building something else, but preferably something of the same difficulty level... my problem is I'm pretty much limited to builds that use parts that can be bought from www.maplin.co.uk (http://www.maplin.co.uk), as I'm in the UK and it's quite often difficult to get hold of strange parts. Any suggestions?

Just set it and forget it....  Im using it for lap and pedal steel.  Lap sounds great, pedal just sounds obnoxious. I love it!

Next builds I did were:
Vox Treble booster - would sound nice with slide solos
Fuzz Face - switch polarity of the caps and battery, and use the same NPN transistors that you did for the Gus boost (I added clipping diodes at the output section for some over-the-top fuzzzzzzz)
Title: Re: Please let me know if you have built this project
Post by: Potatoolay on December 22, 2008, 01:10:31 PM
Build it. Sounds awesome. Swapped out the pulldown resistor for a 100K trim to allow a little more control over the overall output. Called it "Eleven"
(http://i30.photobucket.com/albums/c326/bobandnicole/elevencopy.jpg)
Title: Re: Please let me know if you have built this project
Post by: esdiezy28 on January 03, 2009, 10:44:28 PM
Alright, I had my guitar partially disassembled when I realized I had most the components I needed to drop one of these inboard my Yamaha Pacifica. Made several slight parts substitutions; didn't have any 47k resistors so I replaced with a 56k. Changed output capacitor to 4.7uf. Added a toggle switch at the negative of the output capacitor to turn on pair of 1N5817 Schottky Diodes, and a DPDT bypass switch on the whole circuit, so I can toggle if I want the boost on or not. I didn't have a 5k pot, but I had a nice 10K audio pot that also had a switch on the back, which when rotated on connects the V+ of my battery from the guitar into the boosted circuit. The input of the circuit comes from Guitar Volume Pot Lug 2 (middle). IT SOUNDS AWESOME!! Words can't describe my joy, will get a video with sound to show ASAP! My thanks to Gus for this Circuit, and the entire FORUM and Aron for me to learn and employ electronics entirely from the comfort of my own home! Oddly enough, the switch for the Diodes seem to work whether the output is run thru the booster circuit or not, but it adds chunky grit and lots of sustain, LOTS! One note lasted atleast twenty seconds earlier and started to feedback nicely! I'm open for any questions, and thanks once again! ToNy
Title: Re: Please let me know if you have built this project
Post by: sharkminusbear on January 16, 2009, 11:44:03 AM
I built this last night, it was my second pedal build (did a byoc first), here are some pictures:
(http://i260.photobucket.com/albums/ii8/sharkminusbear/IMG_0148.jpg)(http://i260.photobucket.com/albums/ii8/sharkminusbear/IMG_0147.jpg)
(http://i260.photobucket.com/albums/ii8/sharkminusbear/IMG_0149.jpg)(http://i260.photobucket.com/albums/ii8/sharkminusbear/IMG_0151.jpg)
Title: Re: Please let me know if you have built this project
Post by: .Mike on January 16, 2009, 12:45:46 PM
You know, I realized that I never posted pictures of my NPN Boost!

I built it last June I think, so about six months ago. It was my first build, and I used it as practice before modding my Valve Junior. I figured I would rather get my feet wet with a battery-powered effect before tackling a high voltage tube amp.

Everything went together well. I initially put the transistor in backwards, and figured that one out really quick. My booster was a radio at first, but a resistor in series with the input fixed that. I built it with the range control, which has a minimal effect. I plan on replacing it with either a different tone control, or a volume control. To get a treble boost, I ended up putting a crummy Radio Shack switch in the hole for the DC jack to switch a crummy Radio Shack ceramic capacitor in series with the input capacitor. It worked fine for about twenty throws of the switch, and then the switch broke. The enclosure is pre-drilled and powder coated from PPP.

I made my own layout because the input capacitor I ordered was HUGE. It actually worked well, forcing me to learn how to make a layout. That prepared me for the next pedal I built, an Orange Squeezer on perfboard using a layout that I again had to modify due to huge capacitors.

Here are the pictures. Sloppy, but I'm definitely improving as I tinker around and, of course, as I study some of the excellent work in the pictures topic.

(http://img136.imageshack.us/img136/6196/frontvb4.th.jpg) (http://img136.imageshack.us/my.php?image=frontvb4.jpg) (http://img136.imageshack.us/img136/6765/boardtopqt8.th.jpg) (http://img136.imageshack.us/my.php?image=boardtopqt8.jpg) (http://img136.imageshack.us/img136/788/boardbottomrr5.th.jpg) (http://img136.imageshack.us/my.php?image=boardbottomrr5.jpg)

Thanks for the great project. I'm hooked!

:)

Mike
Title: Re: Please let me know if you have built this project
Post by: Potatoolay on January 29, 2009, 10:40:34 AM
built a second one... no trim in this one.

(http://i30.photobucket.com/albums/c326/bobandnicole/Eleven2.jpg)
Title: Re: Please let me know if you have built this project
Post by: blargendarg on February 04, 2009, 09:37:57 PM
Thank you so much for this, Aron. I came here around a week ago trying to troubleshoot my first attempt, an EA Tremolo (which still doesn't work). I have gotten some really good advice on that, but decided to tackle something simpler as well... what I should have done in the first place. I put this together in a couple of hours last night and was just gratified that I understood it and it worked.

With the hot pickups and giant flatwounds I have on my main guitar, this is not exactly what I'd call a little boost ;) I tried about a half dozen different transistors in the socket... you were right, that *is* fun. I had some fun putting them all in backward as well... I kind of prefer it that way. Nasty Atari racing game distortion...nice.

I'm so happy, maybe I'll just take the EA Trem apart and start over  :D
Title: Re: Please let me know if you have built this project
Post by: aron on February 05, 2009, 05:31:32 PM
Alright!!!!!!!

Aron
Title: Re: Please let me know if you have built this project
Post by: bbmonster on March 09, 2009, 04:58:47 AM
Just wanted to pay homage to aron and thank everyone here. I finished the booster and works great. Enclosures here in Hawaii are hard to find locally so I tend to just buy small aluminum containers from the Goodwill store for a few cents.

(http://raenard.com/gadgets/images/Gadgets0019t.jpg)
(http://raenard.com/gadgets/images/Gadgets0020t.jpg)
(http://raenard.com/gadgets/images/Gadgets0021t.jpg)

Just gotta find me the sticker sheets before I forget which jack is input/output.
Title: Re: Please let me know if you have built this project
Post by: Jayco on March 17, 2009, 04:09:00 PM
Hey Aron,

I've actually built the NPN boost for my own pedal board with great success... use it ALL the time.  However, I recently built it for my son (because I like mine so much) and have an issue:

I know the board is built correctly, but I'm wondering if my pot is a reverse taper or something - when the effect is on, I get BARELY any sound with it at "1" (or the lowest boost setting), and it actually gets LESS when I turn it up until nothing is there.

I was frustrated enough, that last night I tore the whole circuit board apart and rebuilt it step by step again - just to have the same result.

The input cap is a funky one... its yellow with red ends and has no markings of polarity.  I've tried to bypass the input cap just to see if that was causing the issue and it doesn't make any difference.

Thoughts?

Thanks!
Jim
Title: Re: Please let me know if you have built this project
Post by: aron on March 17, 2009, 05:06:22 PM
I don't think the taper would affect the final result.That's so strange Can you compare your voltages on the working on with the non-working one?
Title: Re: Please let me know if you have built this project
Post by: Jayco on March 17, 2009, 05:13:12 PM
I will this evening when I get a chance.  I have to pull mine off of my pedal board (like I said, it gets used a lot :) )

Thanks,
Jim
Title: Re: Please let me know if you have built this project
Post by: Kaffeetrinker on March 23, 2009, 03:20:22 PM
built it...not cased yet, though, from pot setting ~3 o'clock up, there's some nice drive, tend to like it...is there a simple modification to increase this effect and maybe make this Bosster a driver? I think there might not be the power necessary to get a really full overdrive effect, but maybe a bit more...?
Title: Re: Please let me know if you have built this project
Post by: aron on March 23, 2009, 08:37:33 PM
You could make 2 and then cascade them :-)
Title: Re: Please let me know if you have built this project
Post by: Kaffeetrinker on March 26, 2009, 11:24:08 AM
How is that working? Just connecting output1 to input2 so that i have input1 as the guitar input and output2 as the amp-output?
I guess it would be wiser then to adjust the two pots to have the first one as gain pot as it is and the second connected as the master?
Title: Re: Please let me know if you have built this project
Post by: aron on March 27, 2009, 03:55:07 PM
Basically yes. Also read the section on stacked stages:

http://www.diystompboxes.com/wiki/index.php?title=Simplemods#Simple.2C_Easy_Mods.2FTips_.26_Techniques
Title: Re: Please let me know if you have built this project
Post by: demym on April 07, 2009, 12:11:41 PM
Hi to all, i'm a new member with very little electronics experience; i built the NPN booster and it works !
I didn't use the transistors suggested for the project (2222, cause my shopper didn't have them).... i tried with a 2221, and it boosts... going to try other transistors.

This is a great place, following the beginner project helped me a lot in understanding some basic principles of stompbox construction.

In the past i have built the J201 Tillman JFet preamp (and i love the way it sounds..) and a midibox Core (which i transformed into a simple single fx midi looper, very similar to the Advance Midiloop).

I have my first question:

is there a way to substitute the transistor in the NPN booster with a JFET ? I still have nine J201s left... I tried swapping it into the circuit (i obviously used a socket), but it doesn't work...


I'm interested in some JFET stuff anyway, and i would like to build a triple channel floor preamp (similar to the H&K Tubeman)... the channels would be:

1) clean
2) crunch
3) lead

For channel 3 i think i will surely do the Dr.Boogey; can you suggest me some DIY known circuits for channel 1 and 2 ??

Thanks a lot, and excuse my enlarging requests... but, as you imagine, i'm cooled about all this electro/guitar stuff, now that i've already built something !

Have a nice time

Demy


http://myspace.com/demym
http://myspace.com/mondomargot
http://www.mondomargot.it


Title: Re: Please let me know if you have built this project
Post by: Ben N on April 07, 2009, 12:16:43 PM
I guess I should chime in. I built it in a very small RS plastic enclosure, and it does a great job of boosting. I'd like it to be at the end of my signal chain. But I do have a problem with it doing the tremolo thing in certain circumstances, so I think it needs some shielding.
Title: Re: Please let me know if you have built this project
Post by: The French connection on April 07, 2009, 01:17:18 PM
I guess I should chime in. I built it in a very small RS plastic enclosure, and it does a great job of boosting. I'd like it to be at the end of my signal chain. But I do have a problem with it doing the tremolo thing in certain circumstances, so I think it needs some shielding.

I've experience the same thing (tremoloing) with a plastic box. I've rehoused it in metal box and got no problem since...Really nice boost!
Title: Re: Please let me know if you have built this project
Post by: The French connection on April 07, 2009, 01:27:31 PM

For channel 3 i think i will surely do the Dr.Boogey; can you suggest me some DIY known circuits for channel 1 and 2 ??

Thanks a lot, and excuse my enlarging requests... but, as you imagine, i'm cooled about all this electro/guitar stuff, now that i've already built something !

Have a nice time

Demy


http://myspace.com/demym
http://myspace.com/mondomargot
http://www.mondomargot.it

Congratulations!
(i've always wanted to try those marquee) ::)

Look at runoffgroove.com (http://runoffgroove.com) , there's a lot of cool project with j201...and sound sample too! P-)

http://runoffgroove.com/mayqueen.html
http://runoffgroove.com/englishchannel.html

Welcome by the way!

Dan
Title: Re: Please let me know if you have built this project
Post by: Ben N on April 08, 2009, 03:08:51 PM
Thanks, Dan, for confirming my suspicions. Maybe now I'll get around to shielding that box.
Title: Re: Please let me know if you have built this project
Post by: AtomicZ on April 22, 2009, 08:49:30 PM
Just finished the booster!  Had some tremolo problems but I'm guessing it is because I used a breadboard and the entire circuit is not enclosed.
On to another project! ;)
I'm thinking distortion pedal.
Thanks for project.
Phil
Title: Re: Please let me know if you have built this project
Post by: rogsteels on May 04, 2009, 10:46:40 AM
Successfully built the booster

No pics yet I'll have to get the kids to paint it
Title: Re: Please let me know if you have built this project
Post by: aron on May 04, 2009, 03:21:36 PM
Congratulations!
Title: ..
Post by: elevenoid on May 31, 2009, 08:01:50 AM
Hi to everyone,

I've successfully built my boost with a 2N2222a transistor, I had one small teething problem:

When I first completed it was boosting at full the whole time and the volume/gain pot did nothing. I checked it over and realised that I had the electrolytic cap on the pot the wrong way round, flipped it, and now it seems to be working a-ok.

I've stuck it in a Hammond 1590b, and I have to say I think the metal working was possibly the trickiest part of the build. It was my first try, and I've ended up with uneven jack inputs, and an off-centre footswitch, hopefully a drill press would sort this out for future projects. But, its my first home built pedal and I'm thrilled it works.

Many thanks to Aron for all the encouraging and useful stuff here!

Ben
Title: Re: ..
Post by: Renegadrian on May 31, 2009, 08:44:37 AM
Ben, I am sure you wiil look at it with a laugh in jujst some months...First pedals are always  :icon_rolleyes: :icon_redface:
The next one will always be better!!!  :icon_wink:
Title: Re: Please let me know if you have built this project
Post by: aron on May 31, 2009, 12:47:28 PM
Ben,

Great job!!!! You learned a lot. Try this booster with different amps, I think you will be amazed. I love the sound!

Aron
Title: Re: Please let me know if you have built this project
Post by: MrJulius on May 31, 2009, 11:04:58 PM
Once I get a decent amp in the studio I'll do a quick demo of this.

Good lord I love it...

I'm glad such an easy project yielded such a great result. I shall be making a couple of these for my buds...
Title: Re: Please let me know if you have built this project
Post by: aron on June 01, 2009, 01:18:31 AM
I've made 3 of these for people around here. They sure do sound good - even at minimum boost into my Fender amp!
Title: Re: Please let me know if you have built this project
Post by: THOMMO on June 24, 2009, 06:08:12 AM
Finished this one last night! Well technically I finished an LPB-1 clone.I have the parts ready to go for the BP. Just need to get a c-board.
Ok, here comes  the noob question! ;D I haven't connected a switch yet. So, should I get any sound when the battery is discinnected?

First time wiring up a c-board. Worked first go , with minimal debugging(mainly due to my lack of soldering skills).
Happy as Larry :icon_mrgreen:

Jason.
Title: Re: Please let me know if you have built this project
Post by: Ben N on June 24, 2009, 09:06:17 AM
Thanks, Dan, for confirming my suspicions. Maybe now I'll get around to shielding that box.
Yup, aluminum foil, 3M spray adhesive, and we're good to go.
Title: Re: Please let me know if you have built this project
Post by: The French connection on June 24, 2009, 10:27:53 AM
Thanks, Dan, for confirming my suspicions. Maybe now I'll get around to shielding that box.
Yup, aluminum foil, 3M spray adhesive, and we're good to go.

So it stops ''tremoloing''? Mine was fine but recently it start tremoloing again when i've change the routing of my pedalboard. ??? Is'nt it strange! Don't know what to do, maybe i'm gonna try moving the board somewhere else inside... :-\

Dan
Title: Re: Please let me know if you have built this project
Post by: Ben N on June 24, 2009, 10:34:50 AM
So it stops ''tremoloing''? Mine was fine but recently it start tremoloing again when i've change the routing of my pedalboard. ??? Is'nt it strange! Don't know what to do, maybe i'm gonna try moving the board somewhere else inside... :-\

Dan
Maybe check your chassis-ground connection?
Title: Re: Please let me know if you have built this project
Post by: budjb on July 05, 2009, 10:54:44 PM
Built and works like a charm.  Now I need to figure out how to add a marshall tone stack to this thing and I'll be set :)
Title: Re: Please let me know if you have built this project
Post by: aron on July 06, 2009, 02:10:33 AM
You can tack one on to the end, but I'm not sure how much level will be cut by doing this.
Title: Re: Please let me know if you have built this project
Post by: aron on July 06, 2009, 02:11:38 AM
Basically remove the 100K resistor at the end and put this circuit in:

http://amps.zugster.net/articles/tone-stacks#FMV
Title: Re: Please let me know if you have built this project
Post by: Ben N on July 06, 2009, 12:13:18 PM
Thanks, Dan, for confirming my suspicions. Maybe now I'll get around to shielding that box.
Yup, aluminum foil, 3M spray adhesive, and we're good to go.

So it stops ''tremoloing''? Mine was fine but recently it start tremoloing again when i've change the routing of my pedalboard. ??? Is'nt it strange! Don't know what to do, maybe i'm gonna try moving the board somewhere else inside... :-\

Dan
Hmph! Mine came back, too, when I tried to put it on the board. We'll have to revisit this as time allows.
Title: Re: Please let me know if you have built this project
Post by: The French connection on July 06, 2009, 01:27:52 PM
Thanks, Dan, for confirming my suspicions. Maybe now I'll get around to shielding that box.
Yup, aluminum foil, 3M spray adhesive, and we're good to go.

So it stops ''tremoloing''? Mine was fine but recently it start tremoloing again when i've change the routing of my pedalboard. ??? Is'nt it strange! Don't know what to do, maybe i'm gonna try moving the board somewhere else inside... :-\

Dan
Hmph! Mine came back, too, when I tried to put it on the board. We'll have to revisit this as time allows.

Do you have another effect before it? When mine was first in the chain it works OK but when i put something in front it ''trems'', but the tremolo disappears at high level setting...but it's obviously too loud compares to bypassed. Maybe it's an impedance thing. ??? I'm not that good for understanding what's going on. I'll try it alone with a battery.

Thanks!

Dan
Title: Re: Please let me know if you have built this project
Post by: skuwiph on July 11, 2009, 11:54:02 AM
Well, just finished it and it sounds wonderful!

The problem now is that I want to do more... Oh dear. A new hobby to spend money on... ;-)

Just wanted to say a big thank you to Aron for his clear instructions (and the excellent service in getting me the parts faster than many UK companies manage!) and thanks as well to all the people on this forum for providing their expertise and knowledge so freely!

Obligatory exterior shot: http://www.flickr.com/photos/iseckington/3710153510/in/photostream/ (http://www.flickr.com/photos/iseckington/3710153510/in/photostream/)

Slightly nervously, here's the interior, for those that like that sort of thing (I know I do): http://www.flickr.com/photos/iseckington/3710252394/in/photostream (http://www.flickr.com/photos/iseckington/3710252394/in/photostream)

Now, what to build next?

Ian.
Title: Re: Please let me know if you have built this project
Post by: aron on July 11, 2009, 01:10:42 PM
WOW COOL! Looks great!!!!!! I am impressed. What a great looking first build!!!!! I am getting a fuzz going. Maybe that next???
Title: Re: Please let me know if you have built this project
Post by: skuwiph on July 11, 2009, 01:12:35 PM
Thanks! More importantly, though, it sounds lovely!

Mmmm... Fuzz... Now that sounds like a fine idea... :-)
Title: Re: Please let me know if you have built this project
Post by: guitarangry on July 31, 2009, 03:09:11 AM
Well first off this is a great site and have been wasting my time at work loking through it all.

Ive made this project but as of yet dont know if it works :) , as i have forgot one of the  most important parts the battery :icon_eek: I have a feeling i've messed it up but we all gotta start some where and i now remembered why i got an F grade for science at school many moons ago my soldering sucks  :-\ .

Again thank you for a great site. If this one works i think its onto the Smash drive if not ill keep building this till i get one that works :)
Title: Re: Please let me know if you have built this project
Post by: aron on July 31, 2009, 05:54:45 AM
Great and good luck!
Title: Re: Please let me know if you have built this project
Post by: Jimi W on August 02, 2009, 11:25:46 AM
Hi everyone,
I'm Jimi, been into pedals for ages now and after my band split up last year I have found myself with some spare time so I thought I'd get into this pedal building malarkey!

Got the kit from Aron and started building last Sunday, finished the board in a few hours and after a trip to the local electrical place for wire etc yesterday I got cracking again.
I've just finished wiring it all up and at the mo its all boxed in a cardboard enclosure until I sort out my artwork etc for the proper Hammond box. Just plugged my guitar in and to my astonishment it worked perfectly!!  :icon_eek: Thought my soldering was a bit suspect at times but maybe I was just being paranoid!

Gotta say its a great little pedal, haven't given it a proper testing yet because my proper amps (64 Bassman and Carlsbro Top 50) live at my parents farm.

I'll post some pics of the finished article when the enclosure is finished.

Well chuffed and can't wait to get cracking on something else!

Jimi
(P.S. great site Aron, keep up the good work!)
Title: Re: Please let me know if you have built this project
Post by: Brossman on August 12, 2009, 03:16:56 AM
Hey Aron!

Just thought I'd let you know I finished the project yesterday!  I tried it and it works great!  I had to make do with many things and hit many snags along the way.

All in all I learned:
-It pays to have good solder
-Substitutions change things, but aren't always bad.
-And seeing as this was my first time doing ANYTHING with electronics, I had to learn everything about electronics...(still workin on this one)

Eventually, I should be able to get some pics up, But Im warning, it ain't pretty...I didnt want to spend $15 on a 3pdt footswitch, so I used a regular toggle-3pdt that I found in my basement...That's just the beginning (i'll spare you more details)

Anyway, thanks for everything!  I've had a lot of fun (and headaches) with this project!  And most of all, it's inspired me to make more!  My next endeavour will be to design a tube overdrive that can boost trebles (or roll off bass...whatever) using submini tubes.  I'd love your input on that (you can check out my post...)!


Thanks again!

 - Britt R.
Title: Re: Please let me know if you have built this project
Post by: TooManyHobbies on August 21, 2009, 11:37:18 PM
I just finished building this on a prototype board. My first attempt at building a DIY effect, and I was a little nervous plugging it into my amp... but it worked just fine!  I'll probably move this to a perf board and make an enclosure for it. I don't have any of the foot switches right now, so I probably initially use a simple toggle switch.

I really enjoyed reading the forum for this project, and it was a lot of fun to build. I had everything except for a regular 5k potentiometer on hand (using a 5k pcb mount one right now for testing), so it was an easy build. I'm using a 3904 transistor for this project.  Amazingly, it actually worked just fine on the first test!
Title: Re: Please let me know if you have built this project
Post by: TooManyHobbies on August 23, 2009, 02:13:51 AM
I was able to migrate my prototype board project to a perf board w/o too much trouble. Some of my soldering is a bit ugly, but the pedal works just fine.  I have a Hammond 1590B enclosure that I'm going to use to house this.  Right now, I've drilled the holes in it to hold the pot, jacks, and switch, and I've primed it. I'm going to spray paint it a nice gloss red tomorrow and mount all of the components.

This is actually the first time I've migrated a project from a prototype board to a perf board, and it was a really good learning experience.  Looking forward to trying out the IC overdrive project (the one using the 741 op amp) next.

Really enjoy reading this forum!
Title: Re: Please let me know if you have built this project
Post by: TooManyHobbies on August 23, 2009, 03:02:29 PM
Finished the pedal today. I'm probably going to go with 1590BB size enclosures from now on. Even for this simple project, the 1590B was hard for me to work with.  Pedal works great, though. Really happy to have gotten through building my first DIY pedal.

http://www.flickr.com/photos/41810781@N08/3848844519/ (http://www.flickr.com/photos/41810781@N08/3848844519/)

I haven't added any text/graphics to the box. I might do that later.
Title: Re: Please let me know if you have built this project
Post by: aron on August 24, 2009, 04:43:12 AM
Yes, always use a larger box than necessary when you are starting out.
Congratulations!

Aron
Title: Re: Please let me know if you have built this project
Post by: drivenover on October 03, 2009, 07:41:52 AM
I build this project using your parts kit.  Really turned out nice.
I get small clean boost with the control totally off.  Then increasing to huge boost, wildly distorted.

(http://[URL=http://img29.imageshack.us/i/1000490sm.jpg/][IMG]http://imageshack.us/thumbnmail.png)[/URL]
(http://imageshack.us/thumbnmail.png) (http://img27.imageshack.us/i/1000488sm.jpg/)
(http://imageshack.us/thumbnmail.png) (http://img27.imageshack.us/i/1000487sm.jpg/)
[/img]
 
Thanks tons!
I don't think the picture info is in correctly, but maybe they will work.
Mark
Title: Re: Please let me know if you have built this project
Post by: ArmOnFire on October 03, 2009, 03:15:06 PM
Success! I finished building mine today!

I also saw that if you install the transistor backwards (C where the E is supposed to be, and the E where the C is supposed to be, Base same for both) it will act as an attenuator, with no effect from the pot. I might actually have a use for it as an attenuator, so I can always flip the transistor back and forth for this use.

It does add distortion with the pot turned fully, but about 65-75% sounds usable to me.

Thanks, I enjoy this forum and I am trying to decide what to make next.

-Dan
Title: Re: Please let me know if you have built this project
Post by: aron on October 03, 2009, 04:13:44 PM
GREAT YOU GUYS!!!!!
Title: Re: Please let me know if you have built this project
Post by: chris31415926535 on November 02, 2009, 12:18:01 PM
Man, I built the hell outta this thing.

Thanks so much, aron.  I've wanted to get into effects diy'ing for years but it always seemed quite intimidating, and your beginner project was exactly what I needed to get me motivated.  I'll also definitely be referring back to your wiring diagrams (grounding the 9v -ve through the stereo jack?  That's ingenious, and I never would have come up with it)!
Title: Re: Please let me know if you have built this project
Post by: aron on November 02, 2009, 03:13:19 PM
Congratulations!!!!! I didn't invent a thing, everyone else helped me.
Try this booster with different amps, it really does sound good. Especially if you have single coils.
Title: Re: Please let me know if you have built this project
Post by: gfxbss on November 05, 2009, 09:54:00 PM
Took a couple of tries but I finally got it 100% working.  I've been doing mods for a while but this was my first scratch build.  Thanks a lot for running a great community and being willing to help anyone that needs it.

Tyler
Title: Re: Please let me know if you have built this project
Post by: pazuzu on November 08, 2009, 05:05:17 PM
hello, successfully put this together with the n2222 transistor. great starter project.
Title: Re: Please let me know if you have built this project
Post by: erupp on November 11, 2009, 06:33:47 PM
Hi Aron,

Took me a while but finally found time to build the NPN Boost kit.  Completed it today.  Once I got the footswitch installed right way up it worked perfectly.  My only issue is noise when using an external power supply.  It may be a problem with the supply as there is no problem using a battery.  Thanks for the kit and the good instructions.  Now its on to a fuzz box.

Ed
Title: Re: Please let me know if you have built this project
Post by: pazuzu on November 11, 2009, 06:39:29 PM
Hi Aron,

Took me a while but finally found time to build the NPN Boost kit.  Completed it today.  Once I got the footswitch installed right way up it worked perfectly.  My only issue is noise when using an external power supply.  It may be a problem with the supply as there is no problem using a battery.  Thanks for the kit and the good instructions.  Now its on to a fuzz box.

Ed

http://www.beavisaudio.com/bboard/projects/bbp_FilteredPSU.pdf (http://www.beavisaudio.com/bboard/projects/bbp_FilteredPSU.pdf)?
Title: Re: Please let me know if you have built this project
Post by: Chainclaw on November 28, 2009, 06:16:01 PM
I got this finished today. The only issue I had was finding a 1/4" stereo input jack that matched the example. I found one at a different store and had the build running in no time.

(http://tindeck.com/image/yqor/stats.png) (http://tindeck.com/listen/yqor)

I need to build an enclosure for this, but I'm not in a hurry. What I want to do next is build another stompbox, but a lot of the schematics I find are too complicated a step up from this. Any recommendations?
Title: Re: Please let me know if you have built this project
Post by: aron on November 30, 2009, 12:35:28 AM
Congratulations! Try the IC based project in the forum:

http://www.diystompboxes.com/smfforum/index.php?board=33.0
Title: Re: Please let me know if you have built this project
Post by: insomniac on December 05, 2009, 08:33:48 AM
hey all..!

i've just finished my first npn booster project, seems like its working great :D

here are some picture for you to see, i'll be glad to receive some tips too :)

http://picasaweb.google.com/ronminis/Booster# (http://picasaweb.google.com/ronminis/Booster#)

thanks a lot  aron!

ron.
Title: Re: Please let me know if you have built this project
Post by: aron on December 14, 2009, 02:29:35 PM
Good Job!
Title: Re: Please let me know if you have built this project
Post by: tfogarty on December 30, 2009, 07:39:48 PM
I built this on a breadboard, with a DPDT bypass/on switch!

Thanks Aron for the tutorial, this is going to be a kick-ass hobby.

-Tom
Title: Re: Please let me know if you have built this project
Post by: arawn on December 31, 2009, 12:19:13 AM
awesome work guys! Glad you have enjoyed this project.
other simple projects Jack Ormans Mosfet booster on AMZeffects, the Orange Squeezer, The EH LPB1+2
and remember there's a bunch of people here who can help don't be afraid to ask
Title: Re: Please let me know if you have built this project
Post by: tfogarty on December 31, 2009, 08:51:05 PM
And just put together a 2N2222 version of the fuzz face. its not as incredibly complex as it seems!  now preparing a large order of parts, i think radioshack limits you to just the power boost and a half-assed fuzz!

Title: Re: Please let me know if you have built this project
Post by: Overvoltage on February 13, 2010, 09:23:46 AM
I built this last week...and it didn't work!  :(
I checked the connections..fine, I checked the board...guess who needs lessons in reading resistor bands??  :icon_redface:
It's now working!
Thanks to everyone who posts on this board, I`ve learned a lot from you all.
Next...Breadboard the next project... ;D
Title: Re: Please let me know if you have built this project
Post by: aron on February 13, 2010, 01:37:12 PM
Congratulations!!!!!!!
Title: Re: Please let me know if you have built this project
Post by: emstin1 on February 14, 2010, 08:27:31 PM
I finally got it to work, after about 5 previous attempts. That's what i get for reusing parts. Buying smaller solder probably helped too :P  It sounds really good, especially through crate blue voodoo, almost like an OD on the clean channel.  It has a subtle octave up when i play through the neck on my strat though, but its kinda neat IMO. 
I didn't get around to getting an LED, but luckily its pretty easy to tell when its on or off. 
Title: Re: Please let me know if you have built this project
Post by: MBackus on March 15, 2010, 02:05:31 PM
Finalllllly!  Thanks a bunch for the help Aron(and Gus).  I'm using on bass, makes for a real nasty dirty "clean" tone.  (http://i777.photobucket.com/albums/yy57/mbackus/Pedals/npn-1.jpg)(http://i777.photobucket.com/albums/yy57/mbackus/Pedals/npn2.jpg)
Title: Re: Please let me know if you have built this project
Post by: aron on March 15, 2010, 03:30:15 PM
WOW, what a nice build. COOL!

Aron
Title: Re: Please let me know if you have built this project
Post by: BigScaryRussian on April 07, 2010, 09:20:45 PM
I just got done wiring this up! It's a pretty nice boost, good volume increase, and a little bit of bottom end as well. I'm wondering where the bass increase came from. In regards to the LED, it's a little dark for my liking, I used a 1k resistor on it. Should I go with a lower value?
Title: Re: Please let me know if you have built this project
Post by: Load3r on April 16, 2010, 11:13:53 AM
Finally got the circuit working for myself! Lots of desoldering was involved.
I also added a DIP8 socket as suggested in Erik Hansen's blog and put in some Germanium diodes. I have only tried it out with a keyboard so far, but it sounds sweet!
Still need to wire in a millenium bypass switch, and the adapter socket.
I give you the Red Student!

(http://farm5.static.flickr.com/4003/4525283959_b631dd0b01_o.jpg)
(http://farm5.static.flickr.com/4060/4525283951_0b5f42ecc3_o.jpg)

I will start a thread to track further progress.

Thanks again Aron for the great instructions.
Title: Re: Please let me know if you have built this project
Post by: Canis guitarus on April 23, 2010, 12:30:49 AM
Hey Aron,

Have just built this pedal and put it in to action. Very cool, love the boost control really simple but very effective. I tried it with a 2N5088 and with a Fairchild PN100 (general purpose replacement NPN BJT for all sorts of different models) and found, in my set up at least, the PN100 worked extremely well - really loud, clear and low noise.

Great wee pedal, thanks for taking the time to put it up as a project. Now, I must get some bits for the ...  :icon_wink:
Title: Re: Please let me know if you have built this project
Post by: vcarl on July 18, 2010, 01:55:01 AM
Built! I don't actually own an electric guitar so I can't give it a real test, but I checked lots of various joints with a multimeter, and it all seems to be working. Just floating, but hey, the box can come later. I'll post back when I actually buy a guitar :icon_rolleyes:
(http://vitullo.dontexist.org/shared/0718100153a.jpg)
Title: Re: Please let me know if you have built this project
Post by: roundman3gz on July 29, 2010, 11:12:45 AM
I built it! Don't have it wired into a switch though.  Adds lotsa bass huh!  Thanks so much for posting this project!
Title: Re: Please let me know if you have built this project
Post by: aron on July 29, 2010, 07:11:28 PM
>I'll post back when I actually buy a guitar

Hehehe now that is funny! You might be the first!

> Adds lotsa bass huh!  Thanks so much for posting this project!

hmmm it should add highs if anything.
Title: Re: Please let me know if you have built this project
Post by: roundman3gz on July 29, 2010, 10:04:16 PM
Well I couldn't find a 22uf at my local radio shack, so I put a another 10uf in it's place.  Could that be the reason I'm getting more bass?
Title: Re: Please let me know if you have built this project
Post by: aron on July 30, 2010, 03:51:19 PM
No, besides the bass, how are the highs?
Title: Re: Please let me know if you have built this project
Post by: roundman3gz on July 31, 2010, 12:41:50 PM
I'll try to record a sample and post it.
Title: Re: Please let me know if you have built this project
Post by: LeeU on August 03, 2010, 04:51:48 PM
The link on this page http://www.diystompboxes.com/smfforum/index.php?topic=76272.0 (http://www.diystompboxes.com/smfforum/index.php?topic=76272.0) for the parts at http://www.diystompboxes.com/zencart/index.php?main_page=product_info&products_id=55 (http://www.diystompboxes.com/zencart/index.php?main_page=product_info&products_id=55) is not working now.
Title: Re: Please let me know if you have built this project
Post by: aron on August 03, 2010, 05:06:27 PM
Thank you. I need to make more kits.
Title: Re: Please let me know if you have built this project
Post by: beto on August 21, 2010, 11:25:41 PM
It finally worked like a charm!!!

here is the booster
(http://www.freeimagehosting.net/uploads/th.2d91aa7795.jpg) (http://www.freeimagehosting.net/image.php?2d91aa7795.jpg)

and the previous passive effect loop with feedback control that I did as warm up

(http://www.freeimagehosting.net/uploads/th.1afa0b55b5.jpg) (http://www.freeimagehosting.net/image.php?1afa0b55b5.jpg)

next on the list:
-trotsky drive
-dallas rangemaster
-mini blender
-shin ei FY2
-EA tremolo

Thanks for everything guys! I'm becoming addicted to this.
Beto
Title: Re: Please let me know if you have built this project
Post by: LeeU on October 29, 2010, 12:01:41 PM
On the parts page at: http://www.diystompboxes.com/zencart/index.php?main_page=product_info&products_id=55 (http://www.diystompboxes.com/zencart/index.php?main_page=product_info&products_id=55) it shows "Sorry, the product was not found.". Is it out of stock or just been moved? (I finally got all the tools together and now am ready to move to my first project! I hope the parts kit is still available.)
Title: Re: Please let me know if you have built this project
Post by: .Mike on October 29, 2010, 02:03:20 PM
Hi LeeU,

Aron posted this the other day:

Sorry, I will add the kit back shortly. Just busy dealing with other things right now.

It'll be back, just not sure when. :)

Mike
Title: Re: Please let me know if you have built this project
Post by: LeeU on October 30, 2010, 07:07:07 PM
Thanks, Mike! I hadn't seen that, although I did scan through the page. (Must be going blind.)
Title: Re: Please let me know if you have built this project
Post by: pete27 on November 23, 2010, 01:13:26 AM
just finished building this, it sounds really good! and its nice and easy  :P
Title: Re: Please let me know if you have built this project
Post by: aron on November 23, 2010, 02:03:18 PM
Yes it is good! Congratulations!
Title: Re: Please let me know if you have built this project
Post by: Nich on November 23, 2010, 04:22:23 PM
Awesome first project guys!  Thanks so much for putting it out there- I liked it so much I built two of them.  I put the first one into a custom guitar I built and the other went into an standard enclosure that I need to paint.  I can't wait to build the valve caster next... 
Title: Re: Please let me know if you have built this project
Post by: lopsided on January 29, 2011, 07:19:28 AM
I have built it. And a couple of other boosters and fuzzes too. Thanks so much for this site. Not only is it fun to build, circuits but this site also helps me understand other stomp-boxes I use.
Title: Re: Please let me know if you have built this project
Post by: aron on January 29, 2011, 12:44:31 PM
GREAT!
Title: Re: Please let me know if you have built this project
Post by: CheopisIV on April 23, 2011, 12:36:23 AM
Just finished this one myself last night.  Took me three teardowns and rebuilds to realize I probably had it right each time, but using a .01 ceramic cap on the input killed the sound.  It may have just been a bad cap, but when I replaced it with an aluminum electrolytic, the circuit just came to life!  I've got some film caps on the way to do some more testing.  This thing really brings my diy Ruby amp to life, and is exactly what my EHX-Holier Grail needs to counter the volume drop.
I did notice a bit of a tone change with my telecaster through this pedal, it loses some of the twang so some further i/o cap testing may be in order?
All in all, a Killer Boost pedal, thanks so much!!
Title: Re: Please let me know if you have built this project
Post by: JebemMajke on May 02, 2011, 04:17:22 AM
I've finished my booster pedal and It sounds like heaven. It's clean all the way up, probably because i used different transistor, never the less i love it, It makes my guitar sound nicer, and rounder. Thank you for this wonderful project.
I wish i could put a dc jack there, because i don't like the idea of relying on battery, but I guess I'll have to learn how to do that first. :)
Title: Re: Please let me know if you have built this project
Post by: ponch58 on June 01, 2011, 11:45:09 PM
Just finished my build.  Sounds great!  I used a very small Hammond enclosure (mxr standard size) and will prolly use a bigger one for future projects.  It was tight!  At any rate, I can't wait to hear this thing through my Hot Rod Deville 410 tomorrow!  (The baby is sleeping)

I originally used a 2N5088 transistor and found the tone a little muddy with my SG, so I swapped it out for a 2N2222a.  Big difference!  Really brought it to life!

Thanx so much for offering this tutorial!  It is fantastic for people learning how this stuff works.  I can't wait to start my next project!  (prolly a fuzz - keep it simple stupid!)javascript:void(0);

Marcus T

Here are some pics if anyone's interested.  (no paint job yet, I kinda like it raw)

http://ponch58.wordpress.com/2011/06/01/its-the-t-boost-2/
Title: Re: Please let me know if you have built this project
Post by: aron on June 02, 2011, 03:16:05 AM
I like it!
Title: Re: Please let me know if you have built this project
Post by: ponch58 on June 02, 2011, 10:09:54 AM
Hey Aron,

Do you know of any easy way that this project could be modded to get a little dirt in the sound?  Could it be as simple as a different transistor?

I love the clean boost of this pedal and don't want to lose that permanently, but am curious about any simple, temporary mods that could possibly be performed.  You've peaked my interest now, I think I might be obsessing a little bit.  ;)

Cheers!

Marcus T
Title: Re: Please let me know if you have built this project
Post by: aron on June 02, 2011, 04:52:59 PM
The 2n2222 metal top transistor should distort quite a lot when you turn the gain up.

Aron
Title: Re: Please let me know if you have built this project
Post by: ponch58 on June 02, 2011, 07:44:11 PM
Yep.  That it does.  And when played along with my Boss Blues Driver BD2 pedal, it can get really raunchy.

Just wondering about other alternatives.  Can I get a dirty sound out of it at lower volumes, or will it always rely on being overdriven?

Title: Re: Please let me know if you have built this project
Post by: aron on June 02, 2011, 10:03:43 PM
Lower volumes, then you need to add a "master" volume - change the 100K to ground at the end with a pot.
Title: Re: Please let me know if you have built this project
Post by: bobodechimp on July 10, 2011, 06:35:19 PM
am i just not seeing it. which project and were do i find the list of them. i have looked and looked.  just decide to suck up my pride and ask. :icon_redface: 
Title: Re: Please let me know if you have built this project
Post by: deadastronaut on July 10, 2011, 06:43:52 PM
i think it refers to the 'beginner project' a boost pedal.....

http://www.diystompboxes.com/smfforum/index.php?board=6.0
Title: Re: Please let me know if you have built this project
Post by: Jarmake on September 07, 2011, 10:58:47 AM
Hello! This is my first post here and I just wanted to let you know I finished the beginner project-pedal about 20 min ago. It was quite easy and now I'm thirsty for more. Maybe some kind of distortion next? Who knows... :)

Greetings from Finland!

-Jari
Title: Re: Please let me know if you have built this project
Post by: theundeadelvis on September 07, 2011, 11:32:58 AM
Welcome Jari, and congrats on your first build! Be warned, it's an insatiable thirst!
Title: Re: Please let me know if you have built this project
Post by: aron on September 07, 2011, 03:15:53 PM
Cool! Check out:

http://www.diystompboxes.com/smfforum/index.php?board=33.0
Title: Re: Please let me know if you have built this project
Post by: esdiezy28 on September 08, 2011, 11:16:35 AM
This is an EXCELLENT starter project for opening up your world into DIY electronics. This too, was my first project when I was starting out, and knew NOTHING about what I was getting into, that was two or three years ago. I took some circuit analysis classes in college, and having started this a year prior, I had a leg up on EVERYONE in my class (a meager class of 12, but still....).
Everything you might possibly need to know can be found right here on the forum somewhere, an extensive archive of valuable data to process, and learn from.
I had an active pickup in my Yamaha Pacifica (my mod guitar), that required a 9V battery internally for power. I found a neat 10k audio pot with a SPST (i think...) switch, that allowed me to mount this starter project inside my guitar, great boost available anytime without a stompbox!!! Well worth the effort. For all of you who use an active pickup (or pickups) with a 9V battery stuffed inside your guitar, this would be an excellent project to stick inside for that extra boost we all crave so dearly. Just thought I'd launch that idea out there for others to enjoy as much as myself. My thanks again to everyone here who has helped me step into the addictive realm of DIY electronics  :icon_mrgreen:     ToNy
Title: Re: Please let me know if you have built this project
Post by: aron on September 08, 2011, 01:56:09 PM
Thanks Tony!!!!!!!!!!
Title: Re: Please let me know if you have built this project
Post by: Jarmake on September 09, 2011, 02:38:52 AM
Thanks for the welcoming guys!

I actually already ordered parts for tube screamer, as I found a kit (which included parts for ts9 and ts808 versions) with a ready to assemble pcb-board. Thought I'd make it easy for myself couple first times and then gradually make them harder to do. Next time I'm going to make my own pcb-board.. I can do them at my school. :)

BTW, I'm studying to be an electrician and an ICT-mechanic (or something like that.. Don't really know the english term for it, but anyway..) and should graduate in couple of years.. These projects are perfect for learning some basic electronics.
Title: Re: Please let me know if you have built this project
Post by: esdiezy28 on September 09, 2011, 09:42:53 AM
Yes!!! Use school as a tool for your DIY circuit work. I used to take my stompboxes in and check them on our lab oscilloscopes :icon_mrgreen:
Title: Re: Please let me know if you have built this project
Post by: Gus on September 09, 2011, 09:58:15 AM
If you like the NPN boost you might want to try ver2
(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=45623&g2_serialNumber=2)

R5 and R10 are one 5K gain control, 22uf to wiper,  It is drawn this way to sim the 5K control.  The sim steps though the param list and does the math "moving" the wiper, gset as .1 then .25 etc

Input is R8 and R11 node omit C4 and to the left that is a simple guitar sim
Title: Re: Please let me know if you have built this project
Post by: Tinman402 on December 29, 2011, 01:46:02 PM
I built the booster... took 2 tries to get it right but once you do it sounds pretty good.. Using a 2n3904 gives you boost thru 2/3s of the volume then you get some fuzz... Fun project..
Title: Re: Please let me know if you have built this project
Post by: aron on December 30, 2011, 02:45:35 AM
Yes sounds correct! Congratulations!
Title: Re: Please let me know if you have built this project
Post by: stevewdewitt on January 29, 2012, 11:32:16 AM
I have build this project after a couple of attempts at other similar, a little more complex, effects. It does sound good all the way up on my small crate V8 practice amp. I can't wait to hear it on my Fender Blues Jr.

One question I would have, I have a 9v battery, with 8.9v measured, it does seem that the pedal is a little quiet and actually cuts the volume when turned on, is this normal or an indication of a problem?

thanks for all the work,
Steve
Title: Re: Please let me know if you have built this project
Post by: .Mike on January 29, 2012, 02:16:30 PM
One question I would have, I have a 9v battery, with 8.9v measured, it does seem that the pedal is a little quiet and actually cuts the volume when turned on, is this normal or an indication of a problem?

When turned all the way down, it should be (if I recall correctly) slightly above unity gain. As you turn it up, it should get significantly louder.

Check to make sure your transistor is properly oriented, and double check everything else to see if you accidentally made a mistake.

If you can't figure it out, start a topic to debug in this (the Beginner) forum. :)

Mike
Title: Re: Please let me know if you have built this project
Post by: stevewdewitt on February 01, 2012, 02:17:50 PM
One question I would have, I have a 9v battery, with 8.9v measured, it does seem that the pedal is a little quiet and actually cuts the volume when turned on, is this normal or an indication of a problem?

When turned all the way down, it should be (if I recall correctly) slightly above unity gain. As you turn it up, it should get significantly louder.

Check to make sure your transistor is properly oriented, and double check everything else to see if you accidentally made a mistake.

If you can't figure it out, start a topic to debug in this (the Beginner) forum. :)

Mike

thanks for the suggestions and information. I will give this a try as soon as I can.
Title: Re: Please let me know if you have built this project
Post by: Strat68okc on May 13, 2012, 10:15:42 PM
I just finished it. It works. I'm amazed. I did screw up and put the wrong caps in the wrong place in the circuit, so I had to take them out and change em. My vision could be better for doing things like this. I'm already planning my next build....
Title: Re: Please let me know if you have built this project
Post by: aron on May 14, 2012, 05:36:37 AM
Great! Congratulations!
Title: Mission Accomplished
Post by: scnative on June 10, 2012, 09:01:36 PM
Project completed. I bought the parts from this store, for the record.  It sounds killer and I love the breakup at the higher volumes.  I put it in a Radio Shack aluminum project box.  My only issue is the "pop" when engaging the switch.  It goes away when disconnecting the LED.  I've tried rewiring the switch 4 or 5 and tried different LED/resistor combinations. I have put a 10k resistor in front of the input and it helped a bit.  I might play around a little more with this as I noticed the V2 of this circuit has a anti-pop resistor.

I can only notice the pop with no input signal and the amp dimed.

Anyway, thanks for the forum.  I've learned a lot and look forward to building the next fuzz project.

Take it slow,

SJ
Title: Re: Please let me know if you have built this project
Post by: axemurderforhire on July 17, 2012, 02:08:06 PM
Little vid i did for the booster, Sadly i dont appear in it but you do get to hear my awe inspiringly bad guitar playing  :icon_biggrin: you lucky people ha ha

http://youtu.be/wfj9OY_Jjjs
Title: Re: Please let me know if you have built this project
Post by: aron on July 17, 2012, 05:14:24 PM
COOL video!
Title: Re: Please let me know if you have built this project
Post by: BobP on August 27, 2012, 07:03:21 PM
I just finished this on a breadboard and it sounds killer! I don't know about others saying this is subtle, I'm getting really cool distortion and a BIG boost.

I have a question about one of the capacitors, the 10uF on the output. In the build pictorial it shows a positive and negative side (polarized?). The cap I bought is non polarized. If I adjust the knob anyway other that max I get a lot of weird 'wuh-wuh-wuh' noise. Any opinions appreciated, I may start a debug thread later. Thanks Gus, Aron et. al.

EDIT: Just wanted to add that this worked on my first try, and I am a CRAPPY solderer. I really did not expect it to work. Kudos for the clear pictorial.
Title: Re: Please let me know if you have built this project
Post by: pinkjimiphoton on September 08, 2012, 02:38:38 PM
one more for the build list, gus!!

if you guys haven't tried it yet, try gus's octave up sick box...best octave fuzz on the planet!!
;)
Title: Re: Please let me know if you have built this project
Post by: gnort_2 on August 29, 2013, 05:45:58 PM
(http://i1362.photobucket.com/albums/r685/gnort_2/726afb86-8007-4b29-a864-6b3d58620bd8_zpsd5d53a54.jpg?t=1377812489)

This is my second pedal.  The boost, works great.  Thanks for all the help boys.  I was gonna put a name on it.  But i liked the starkness of the glow in the dark peter lorre.  Who wouldn't?
Title: Re: Please let me know if you have built this project
Post by: craniumboy on October 13, 2013, 11:09:47 AM
I have built this and it works great. Only working on trying to decorate my enclosure! I do have a question... When I built this on the bread board it was perfect. I put it on a board and had some issues trouble shot through that and finally got working. Now when I bring the boost all the way up it starts to buzz even if not playing anything... Anyone have any ideas?
Title: Re: Please let me know if you have built this project
Post by: S_DANILO on November 18, 2013, 07:33:47 AM
Please post a message if you have succesfully built this project.

Thanks!

@ Aron, thanks a lot for the great tutorial! I've just done it and can gladly say it's my first successful DIY pedal! :D

Despite being successful, I've got two questions about it:

1) When I turn the GAIN knob up I end up having a great overdrive sound! Was this supposed to happen ? Or I just messed it up in a wonderful way ?

2) I tried to use the DC Jack bellow, but I quit when I noticed that I would need to first attach it to the enclosure and only then solder the cables. Is this right? Am I using the correct DC Jack ?

(http://tiggercomp.com.br/novaloja/images/jack-p4-boss.jpg)

Thanks again! :D
Title: Re: Please let me know if you have built this project
Post by: ReluctantGT on January 26, 2014, 11:01:26 AM
I built it!  My first proto-board attempt.  I built it on a 101ST board using a MPSA18 transistor and 2 10uf caps in parallel in place of the 22uf.

Initially, it was a great AM radio receiver.  Now it's not as good a radio, but a much better volume boost!  Now I need an enclosure...

Title: Re: Please let me know if you have built this project
Post by: aron on January 27, 2014, 04:16:30 AM
Cool!
Title: Re: Please let me know if you have built this project
Post by: Sghet on March 25, 2014, 09:48:17 PM
Amazing stuff! This pedal works on Bass? and what can you change to have also a tone pot? te V2 looks amazing!
Title: Up and running !!
Post by: mountianjustice on March 18, 2015, 05:36:41 PM
I had a little trouble at first. But now its working great i used a T1806 germanium pnp transistor. I had to reverse the voltage to get it working that took a while to figure out. I also used a 5 inch shielded 3 conductor with a plug on the end to connect my transistor i put the collector in the middle so i can just pull the tran and flip it around reversing the emiter and base. Wait that sounds wrong. Doesn't it? But any way its working great i had to use a 10k pot. I have a clean boost up till about 3/4 on the pot then it gets into really heavy overdrive. I wasn't expecting that but it sounds great. I did have to put a 10000uf 25v cap across the power supply to get rid of a whine it had. I tried a 100uf 16v first and it exploded how did that happen with only 9vdc?  Here is a schematic i drew up the 10000uf 25v cap is not included on the schematic. Just for the record next guy to comment is 420

http://i1381.photobucket.com/albums/ah234/mountianjustice/my%20attempt_zpszktjg6xm.png
Title: Re: Please let me know if you have built this project
Post by: acorrales on June 04, 2015, 12:47:37 PM
Hello all,  This is my first post here, but my second booster. It is intended to be used to return unity gain to a passive mixer (2 ch. pot 250k R100k). 

I built a LPB1 that does not work as expected, cause is not boosting the mixer if I use it in the output (mix), and it is killing my strat highs (SSL-5 pup)  if I use it in front in one channel.

I decide to check the V2 of this one and I have it in a breadboard using a 2N2222A that I thing is working OK: it boosts, but  now I'm losing some bottom end when used strat > Mixer Ch1 dry / Mixer ch2 delay 100% wet > booster V2 > amp (the setup is more complex than that, but that's the idea).   Also, I have the bottom end loss if I set up Strat > boost > mixer ch1: Boosted dry signal / ch2: Delay 100% wet > amp. I don't really know if the cut is because the breadboard, as I also have a lot of noise that I still need to track, or if it can be solved by changing the value of some component.

Of course, no amp equalization can fix this, so, Does anybody can recommend a change in the booster, to recover that low frequencies?
Title: Re: Please let me know if you have built this project
Post by: duck_arse on June 05, 2015, 12:14:45 PM
hello and welcome, acorrales. we need voltages! if you go here and follow the rules, then post results, and maybe some photos of what you have built, we'll get you fixxing it.

http://www.diystompboxes.com/smfforum/index.php?topic=29816.0
Title: Re: Please let me know if you have built this project
Post by: acorrales on June 06, 2015, 06:46:47 PM
yups... Sorry!  I found the schematic directly on Google, and haven't saw the rules.  I'm going to read them and report back.
Title: Re: Please let me know if you have built this project
Post by: midwayfair on September 15, 2015, 10:33:38 PM
If you like the NPN boost you might want to try ver2
(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=45623&g2_serialNumber=2)

R5 and R10 are one 5K gain control, 22uf to wiper,  It is drawn this way to sim the 5K control.  The sim steps though the param list and does the math "moving" the wiper, gset as .1 then .25 etc

Input is R8 and R11 node omit C4 and to the left that is a simple guitar sim

Gus (or anyone else who knows) can you explain what C1 is doing?
Title: Re: Please let me know if you have built this project
Post by: Groovenut on September 22, 2015, 02:59:35 PM
I could be all wet here (probably) but it looks like C1 is providing positive feedback of higher frequencies, possibly to offset the low input impedance loading on the guitar pickups. The Cornish buffer uses something similar to do the same thing but his has a slightly different config.

My 2cents
Title: Re: Please let me know if you have built this project
Post by: midwayfair on September 22, 2015, 03:08:31 PM
I could be all wet here (probably) but it looks like C1 is providing positive feedback of higher frequencies, possibly to offset the low input impedance loading on the guitar pickups. The Cornish buffer uses something similar to do the same thing but his has a slightly different config.

My 2cents

Ah, makes sense. Is there a benefit to that instead of just, say, having higher input impedance?
Title: Re: Please let me know if you have built this project
Post by: Groovenut on September 22, 2015, 05:08:47 PM
The issue with using BJTs as input amplifiers fed by guitars, is they have a low input impedance determined by the Emitter resistor. Even bootstrapping that cap only brings it up to around 300k-500k at best. The bias resistors will always be in parallel with the Emitter resistor as far as input impedance is concerned.

Again I could be wrong here, but that's how I understand it.
Title: Re: Please let me know if you have built this project
Post by: midwayfair on September 22, 2015, 08:39:59 PM
The issue with using BJTs as input amplifiers fed by guitars, is they have a low input impedance determined by the Emitter resistor. Even bootstrapping that cap only brings it up to around 300k-500k at best. The bias resistors will always be in parallel with the Emitter resistor as far as input impedance is concerned.

Again I could be wrong here, but that's how I understand it.

No no, you're definitely right. I just couldn't figure out that it was intentional positive feedback for the purpose of punching up the highs. Clever.
Title: Re: Please let me know if you have built this project
Post by: Gus on September 23, 2015, 07:43:41 PM
Bootstrapping is in "The Art of Electronics"
The Vbe drop is fairly constant
The emitter "follows" the base one Vbe drop lower in voltage
So if you have a large cap from base to emitter the emitter drives the three resistors node in phase one Vbe drop apart
The resistor from the node to base has a close to constant voltage across it

for more information
Pages 96 and 97 in the 2nd edition
C1 adjusts the "bottom bump"
the 1st ver had a greater value cap from emitter to the node

Also think about what happens as the wiper moves closer to the emitter
Title: Re: Please let me know if you have built this project
Post by: jonboper on March 10, 2017, 04:38:23 PM
This was the first pedal I built - took a few tries but it's working and sounding pretty good thanks to the help I've gotten on this and related forums. I had trouble with the enclosure (waterslide shrinkage) and wiring, but I learned a lot. I tried several NPN transistors, all flavored the pedal quite differently. The 2N2222a imparted almost no distortion to the pedal, a smooth warm boost. I really liked the 2N3564 dot from Small Bear, a mostly smooth warm boost until the end of the range where it distorted with and sounded slightly splattered, but it went into oscillation a little too readily and so didnt work well with other pedals in front of it. I ended up with a 2N5088 because it held its tone the best, a big warm boost until it becomes a wheezy distortion.

(http://i.imgur.com/0ngkhMnh.jpg)

(http://i.imgur.com/niaVqP5h.jpg)

Title: Re: Please let me know if you have built this project
Post by: rutabaga bob on March 10, 2017, 10:21:06 PM
@Jonboper - I really like the finish on this!  Details, please!
Title: Re: Please let me know if you have built this project
Post by: duck_arse on March 11, 2017, 09:14:35 AM
JonB - why haven't you (resized that yuge image and) posted this in the pictures! thread? that box looks great.
Title: Re: Please let me know if you have built this project
Post by: jonboper on March 11, 2017, 04:21:17 PM
Thanks! (resized pictures, not as yuge)

The finish is (homemade) alcohol inks and a waterslide decal that shrunk, which is why the odd outline and the texture. I went over it all with a lacquer I have left from finishing an instrument, but the color of the inks lost some of its brilliance while I was spraying with a clear gloss. Have to work on the finishing more, but a great first project. Learned a ton.
Title: Re: Please let me know if you have built this project
Post by: aron on March 14, 2017, 03:54:18 AM
Very nice!
Title: Re: Please let me know if you have built this project
Post by: Sinister on May 26, 2017, 06:08:41 PM
Cant see the project. Where can i find it pls?