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DIY Stompboxes => Building your own stompbox => Topic started by: Taylor on September 05, 2010, 08:22:05 PM

Title: What else would you like to see PCB projects for?
Post by: Taylor on September 05, 2010, 08:22:05 PM
I've had a lot of fun doing the PCB projects for this forum. I know that I really enjoy building on manufactured PCBs with all the "pro" goodies, and from the emails I get I can tell that a lot of people feel the same way. I never thought it would make much difference, but since I've started working on these, my etching rig has been sitting lonely and unused for quite some time.  :icon_wink:

Anyway, I was just curious what else you guys would like to see a PCB for. I do have some things cooking up, but other suggestions are greatly welcomed. I am still working on the tap tempo stereo delay, and I also have a clean analog octave down board (based on the Oc-2) that is near completion.

What else would you like to see?
Title: Re: What else would you like to see PCB projects for?
Post by: Govmnt_Lacky on September 05, 2010, 08:27:46 PM
http://www.diystompboxes.com/smfforum/index.php?topic=86832.0

 ;D
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 05, 2010, 08:48:05 PM
If we get it verified the TZF Electric Mistress (Or another Flanger... there's a schematic for a MN3007 MXR M117 By Fender3D which would make a great TZF Flanger I bet) All on one PCB Would be great to see.

A Stacked Chip Analog Delay of Some Description (Like a Memory Man but for V3205 or Those 8Pin BL3208s)

A Good Chorus Project would be nice too, not sure what kind though.

A/DA Final Phase? We had the Flanger...

A High Gain Distortion like the DieFet or Dr.Boogey with on board MAX1044 Doubler.

An Acoustic Simulator Project like Mark Hammers Woody or the AC-2

That's my input, in order of preference.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 05, 2010, 09:20:02 PM
Great suggestions.

A High Gain Distortion like the DieFet or Dr.Boogey with on board MAX1044 Doubler.

Is there a thread discussing using a charge pump with the Boogey? I don't know much about that circuit, searched but couldn't find any info mentioning charge pumps. Is the idea just to boost 9v to 18v to get more headroom?
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 05, 2010, 09:28:11 PM
Great suggestions.

A High Gain Distortion like the DieFet or Dr.Boogey with on board MAX1044 Doubler.

Is there a thread discussing using a charge pump with the Boogey? I don't know much about that circuit, searched but couldn't find any info mentioning charge pumps. Is the idea just to boost 9v to 18v to get more headroom?
Yeah Pretty much, I recall seeing it in a thread and someone saying it just made it a bit quieter, added some headroom and made it a bit easier to bias which seems like a good reason to do it.
Title: Re: What else would you like to see PCB projects for?
Post by: jkokura on September 05, 2010, 09:28:39 PM
A long analog delay using the cool audio BBD Chips would be cool, especially if it could be tap tempo controlled all on one PCB. I'd love to see a Reverb project as well, something a little more DIY than the BYOC unit. There are some good CE-2 and Small clone projects out there on PCB, so I'm not sure what Chorus would be a good alternative to those.

I thought about the acoustic simulator you mentioned scruffie, but for the price you can buy an AC-2 at I don't think a build is worth it really. I have and AC-2 and I'm having trouble selling it for 40 plus shipping.

Jacob
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 05, 2010, 09:33:01 PM
A long analog delay using the cool audio BBD Chips would be cool, especially if it could be tap tempo controlled all on one PCB. I'd love to see a Reverb project as well, something a little more DIY than the BYOC unit. There are some good CE-2 and Small clone projects out there on PCB, so I'm not sure what Chorus would be a good alternative to those.
There's the DC-2 Chorus... bit of an undertaking though (and was done once before I think on another forum) Clone Theory although i'm not sure how good that actually is in comparisson to a small clone... most people probably go for the Small Clone or CE-2 though anyway so maybe not.
Quote
I thought about the acoustic simulator you mentioned scruffie, but for the price you can buy an AC-2 at I don't think a build is worth it really. I have and AC-2 and I'm having trouble selling it for 40 plus shipping.
Ah... that's fair enough then, the Woody does already have a PCB layout about too, I suppose though it's more having a professional PCB with on board pots and the like that make the build easier that's the attraction.

I'm gunna hit hard for the MXR M117 TZF though, that'd be my dream project to get a PCB for and second to that or the Long Analog Delay (although there is already the BYOC Analog delay but... I think it could be improved on)
Title: Re: What else would you like to see PCB projects for?
Post by: therecordingart on September 05, 2010, 10:40:57 PM
The Randall RG100ES.
Title: Re: What else would you like to see PCB projects for?
Post by: MmmPedals on September 05, 2010, 10:46:07 PM
If you're thinking chorus the zombie would be great. Needs to be laid out very carefully to avoid ticking. could incorporate a Leslie mod. and i am sure we can come up with some others. ;D
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 05, 2010, 10:52:34 PM
The Randall RG100ES.

Ambitious, I like it. An amp would be an interesting change of pace. But probably not enough interest to make it cost-effective, sadly.
Title: Re: What else would you like to see PCB projects for?
Post by: markeebee on September 05, 2010, 10:57:28 PM
How about the Frequency Central Little Angel chorus, with all the (jumberable?) mods?

I'm sure Rick wouldn't mind, and it would be a real forum team effort.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 05, 2010, 11:06:49 PM
Ambitious, I like it.
Ambitious? I could do with an A/DA STD-1 PCB if you wanna go for ambitious  :icon_mrgreen: sadly, probably alot less interest in that one.

Quote
The Randall RG100ES.
I don't know if it's of interest to you but while i'm here... there was a PCB for a Mesa Rectifier Amp but converted to J-Fets like the Randall around somewhere, I have the files saved but the thread should still exist... both the same kinda High gain area.
Title: Re: What else would you like to see PCB projects for?
Post by: therecordingart on September 05, 2010, 11:16:19 PM
Ambitious, I like it.
Ambitious? I could do with an A/DA STD-1 PCB if you wanna go for ambitious  :icon_mrgreen: sadly, probably alot less interest in that one.

Quote
The Randall RG100ES.
I don't know if it's of interest to you but while i'm here... there was a PCB for a Mesa Rectifier Amp but converted to J-Fets like the Randall around somewhere, I have the files saved but the thread should still exist... both the same kinda High gain area.

If you can find those files I'd be in debt to you sir!
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 05, 2010, 11:21:41 PM
How about the Frequency Central Little Angel chorus, with all the (jumberable?) mods?

I'm sure Rick wouldn't mind, and it would be a real forum team effort.

I have been thinking about that. I haven't built it yet but it's a great idea and I think a tiny chorus could be extremely useful.

Ambitious? I could do with an A/DA STD-1 PCB if you wanna go for ambitious  :icon_mrgreen: sadly, probably alot less interest in that one.

I like doing crazier and more complex stuff for sure. It's just a matter of finding something that enough people want to build that the boards are affordable. I'm not familiar with that unit, but it seems like maybe ~arph's delay project may do some of that stuff. He has mentioned that he may do PCBs for it.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 05, 2010, 11:29:40 PM
Quote
I like doing crazier and more complex stuff for sure. It's just a matter of finding something that enough people want to build that the boards are affordable. I'm not familiar with that unit, but it seems like maybe ~arph's delay project may do some of that stuff. He has mentioned that he may do PCBs for it.
It would require an MN3011 chip, which most people aren't going to be able to get hold of, it was just a big old rackmount Chorus/Flanger/Doubler from the 80s but few were made so there quite rare and sought after now.

Another thing I thought would be nice would be the Tri-Vibe if the ROG guys don't mind... maybe with the Little Angel on the same PCB or something so it was Vibe, Chorus, Leslie, Phaser, Doubler all in one, it would make a nice Analog Multi FX unit.
Title: Re: What else would you like to see PCB projects for?
Post by: Philippe on September 05, 2010, 11:31:00 PM
How about a multi-channel DIY UHF wireless guitar system?

A basic Shure model goes for around $400...considering that some exotic boutique fxs pedals can approach that price, maybe you could design one for around $200-250 in parts? ;)
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 12:04:36 AM
How about a multi-channel DIY UHF wireless guitar system?

A basic Shure model goes for around $400...considering that some exotic boutique fxs pedals can approach that price, maybe you could design one for around $200-250 in parts? ;)

It would be quite possible to make a junky one, but to make one that actually sounds good would be way beyond my ability or probably that of most DIYers unfortunately. I think there's a schematic for one on Mark Hammer's site, but I'm guessing it's pretty lo-fi.

Vibe, Chorus, Leslie, Phaser, Doubler all in one, it would make a nice Analog Multi FX unit.

Hmm, that's a very interesting idea...
Title: Re: What else would you like to see PCB projects for?
Post by: Cymbal Monkey on September 06, 2010, 01:21:55 AM
Please make a tube driver PCB! I would love you forever!
Title: Re: What else would you like to see PCB projects for?
Post by: azrael on September 06, 2010, 02:04:09 AM
+1 to the Electric Mistress idea.
Title: Re: What else would you like to see PCB projects for?
Post by: therecordingart on September 06, 2010, 08:30:26 AM
How about a multi-channel DIY UHF wireless guitar system?

A basic Shure model goes for around $400...considering that some exotic boutique fxs pedals can approach that price, maybe you could design one for around $200-250 in parts? ;)

This goes way beyond the average DIY'er. Unless you are good with very small surface mount work your enclosure will be as large as a desktop computer.
Title: Re: What else would you like to see PCB projects for?
Post by: darron on September 06, 2010, 08:47:31 AM
(http://www.aaa-fashion.com/wp-content/uploads/2009/06/scarlett-johansson-hairstyles-gallery4.jpg)

wait...
Title: Re: What else would you like to see PCB projects for?
Post by: therecordingart on September 06, 2010, 08:59:53 AM
The Randall RG100ES.

Ambitious, I like it. An amp would be an interesting change of pace. But probably not enough interest to make it cost-effective, sadly.

Not THAT ambitious...

http://www.schematicheaven.com/newamps/randall_rg100es-rg80es.pdf

I need to learn how to do layouts.
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 02:25:14 PM
TZF Electric Mistress with MN3007 retrofit
You could check in with Dave (oldschoolanalog) and see if he got any further with the 3007 retrofit, I believe there could be quite some interest in this project.
Otherwise I'm very interested in Arnouds project, in fact I think I'll check in with him and see what the status is.
Oh and I wouldn't mind having a crack at some module from the synth world that could be adapted for guitar use. This is where a double sided, well ordered board would be a big help. I still haven't got double sided capabilities :icon_sad: I'm open to offers on what it could be, but something fun/different and relatively complex since your projects have been pretty easy to get up and running so far Taylor I don't think a higher parts count would scare too many people off.
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 03:00:44 PM
Ok, so I just checked in again on the echorec thread, looks like Arnoud is busy.
Unless he is interested in a joint effort to get the monster finished, looks like we'll just have to wait.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 03:03:38 PM
Ok, so I just checked in again on the echorec thread, looks like Arnoud is busy.
Unless he is interested in a joint effort to get the monster finished, looks like we'll just have to wait.
Yeah I think that'll be a way off, plus it's a pretty huge undertaking for alot of builders and he'll probably have his own PCB run done.

3 Votes for the TZF Flanger So Far... Go on Taylor, you know you wanna  :icon_mrgreen:
Title: Re: What else would you like to see PCB projects for?
Post by: rousejeremy on September 06, 2010, 03:17:52 PM
I would love a clone of a B.K Butler Tube Driver that didn't have some problems.
Title: Re: What else would you like to see PCB projects for?
Post by: jkokura on September 06, 2010, 03:18:05 PM
I checked the FoxRox website out. Yes. Yes I want that. So make it so, number 1... engage.

Jacob
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 03:56:53 PM
Is there a specific TZF flanger design you guys would want? One that's already got a verified schem? It's a cool idea but I'm not too familiar with what flangers are out there as I've never made one.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 04:05:17 PM
Basically there's this module by Thomeeque http://www.diystompboxes.com/smfforum/index.php?topic=85977.0

Which you just combine with any MN3207/MN3007 Flanger really, i'd quite like the MXR M117, for which a schematic is here http://www.wizardinside.it/foto/schemi/flange.pdf
as I think it'd make a nicer sounding TZFlanger but it would also work fine with the electric mistress from this thread http://www.diystompboxes.com/smfforum/index.php?topic=78270.0

Then it's just down to good layout to avoid heterodyning clocks (hopefully not an issue though due to the raised Frequency from using MN3007s)
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 04:24:18 PM
Not THAT ambitious...

http://www.schematicheaven.com/newamps/randall_rg100es-rg80es.pdf

I need to learn how to do layouts.

Right, it's not about parts count (I have done PCBs for things with more parts than that), it's more to do with the mains wiring, tranformer, high wattage resistors, etc. Projects like that scare off a lot of people, and when the number of people interested goes down, the price per board goes way up. If you do decide to do the layout, I will happily offer whatever help I can.
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 04:34:47 PM
Ok, that was some good links. I totally missed Thomeque's thread because I was on holiday. Cool that got done.
I wasn't very familiar with the MXR M117, but thanks to youtube I can say that I think it sounds pretty good, and I'm happy to go that way if thats where the interest takes us.
I could see two battery holders on the production model and a look at the schem indicates it's running on 15 volts, so on board charge pump would be one of my requests.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 04:39:32 PM
Ok, that was some good links. I totally missed Thomeque's thread because I was on holiday. Cool that got done.
I wasn't very familiar with the MXR M117, but thanks to youtube I can say that I think it sounds pretty good, and I'm happy to go that way if thats where the interest takes us.
I could see two battery holders on the production model and a look at the schem indicates it's running on 15 volts, so on board charge pump would be one of my requests.
It did get done yeah, although it's not been verified yet but i'm sure it wouldn't take long to verify the small module board.

Yeah it has a very nice sound, the Electric Mistress has a 'unique' sound but I think the M117 is more what most people think of when they think Flange (probably due to Eddie Van Halen) and is a bit thicker in the sweep sound so I think it'd give a nice swoosh at the TZF point.

Yeah the LT1054 charge pump on the A/DA was a great inclusion, definitley think we should add it if this goes ahead.
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 05:03:28 PM
Is that schem for the MXR verified do you know?
I'm probably more into "unique" as it goes, but I'm willing to give this a go because it sounds pretty solid, and because we'd be doing something different again.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 05:06:00 PM
Is that schem for the MXR verified do you know?
I'm probably more into "unique" as it goes, but I'm willing to give this a go because it sounds pretty solid, and because we'd be doing something different again.
Yup it is, it's Fender 3Ds schematic and he's built one and verified it, the chip used is an MN3007 equivalent by the way incase you thought you'd have to find a random chip.
It actually does get very unique at some settings but its base sound is solid as you say.
Title: Re: What else would you like to see PCB projects for?
Post by: markeebee on September 06, 2010, 05:20:34 PM
Tonight I have drunk quite a lot of very nice rum. Seemed like a good idea until I googled "TZF flanger" and tried to understand all those words that people have written.

Anyone help me with a quick idiot's guide?
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 05:30:01 PM
TZF stands for through-zero flanging. The idea is that, the original "flanger" was 2 tape players, with the same audio running on both of them. You'd get the flanging by putting your finger on the flange of the tape reel, slowing down that reel slightly, and the 2 recordings slip past in each other in time. This creates cancellations at different frequencies at different times, producing the flanging sound heard on "Killer Queen", etc.

So, in that instance, both versions of the audio are pre-recorded, rather than being played real-time. Because of this, it's possible for either tape to be delayed behind the other, and here's where the "zero" point happens: when tape A is slightly ahead of tape B, and you slow down tape A so that B overtakes it, there is a tiny moment where everything is cancelled out, and I guess this has kind of an ecstatic, psychedelic effect on your brain.

To do this with a live instrument, you have to delay the "clean" signal a little, so that it's possible for the modulating signal to go from being behind your "clean" signal, to actually happening before it. So a pedal for TZF needs to have one short, fixed delay line, in addition to the modulated one.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 05:31:30 PM
Yup what Taylor said, it certainly does have an effect on the ears and brain that is quite 'ethreal'

Heard on The Small Faces - Itchycoo Park, you can hear the flanging goes through a point where the sound is not like normal flanging.

Here's a soundclip of the original SAD1024 TZF Electric Mistress by Marcusw (Where I stole the idea from  ;D) http://www.diystompboxes.com/DIYFiles/up/wind_me_up.mp3
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 05:53:42 PM
Quote
the chip used is an MN3007 equivalent
Thats good, I can always source new chips, but I've got nine 3007's looking for work. :icon_biggrin:
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 06:04:32 PM
Hmmm Scarlett and Markeebee in the same thread, how unusual
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 06:10:57 PM
It's only because, in a thread, Scarlett can't run away.
Title: Re: What else would you like to see PCB projects for?
Post by: markeebee on September 06, 2010, 06:47:39 PM
Even if she was running away, I would still enjoy watching.

Thanks for the explanations. Makes perfect sense now, and I like the kinda organic quality of the sound. Never really been keen on flangers before, but the big kids have bullied me in to it.

Do it. Do it.
Title: Re: What else would you like to see PCB projects for?
Post by: oldschoolanalog on September 06, 2010, 07:14:07 PM
Using an LT1054 on a TZF flanger will give you 3 high frequency clocks on the same board.
This is at best tempting fate. At worst it could be more whiny than an unhappy 10 yr. old girl (I should know; I have one). :D
Just a thought. I don't know. Don't & never will use charge pumps myself...
As far as a "base" flanger goes, my vote is for the EM. However, it needs a new layout. In fact it's begging for a new, more compact layout. One that has an output buffer (for the volume drop issue). And a carefully thought out component layout, ground planes, power rails & clock lines. Not to mention any other switchable mods deemed fit for the project.
The details:
http://www.diystompboxes.com/smfforum/index.php?topic=25380.msg166584#msg166584
Not exactly a casual undertaking. One that would be very much appreciated though. :icon_cool:
If you want a challenging project, this would qualify.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 07:21:42 PM
Using an LT1054 on a TZF flanger will give you 3 high frequency clocks on the same board.
This is at best tempting fate. At worst it could be more whiny than an unhappy 10 yr. old girl (I should know; I have one). :D
Just a thought. I don't know. Don't & never will use charge pumps myself...
As far as a "base" flanger goes, my vote is for the EM. However, it needs a new layout. In fact it's begging for a new, more compact layout. One that has an output buffer (for the volume drop issue). And a carefully thought out component layout, ground planes, power rails & clock lines. Not to mention any other switchable mods deemed fit for the project.
The details:
http://www.diystompboxes.com/smfforum/index.php?topic=25380.msg166584#msg166584
Not exactly a casual undertaking. One that would be very much appreciated though. :icon_cool:
If you want a challenging project, this would qualify.
Yeah I thought about the LT1054 after I said it, but then I thought... sod it, might aswell risk having it on the board as it's only a few parts and not everyone will use it.

I suppose the EM will be more likely to get verified with the add on aswell seeing as that's where the idea sprung from (especially if you fancy taking such a plunge  :icon_mrgreen: ) and also not require the added risk of an LT1054.

So Taylor... recon you can pull this one off?
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 06, 2010, 07:48:56 PM
It's a tough one. May require me to do some deeper reading on techniques for advanced PCB design. I know about ground planes and separate power rails and so forth, but if I did that project I'd want to really do it right. The only thing is that I'd really prefer to do something which uses easily available parts. I know from previous projects that anything you can't get at Small Bear apparently turns a lot of people off.

To come at this from a different direction, one which flies in the face of mojo, I wonder if a TZF flanger could be made with 2 PT2399's? Of course, the shortest delay is too long, but what if you mixed the clean, undelayed signal, plus a static delayed signal, plus a modulated delay signal? Since you have the clean signal there, it wouldn't feel like there was latency; the flanging would just be slightly behind the note attacks. Maybe I'll wang it together and see how it sounds, as I have a bunch of PT2399's sitting around.

This doesn't mean I'm not into doing the analog TZF flanger. I am. But on the off chance that the PT2399 version sounded good, it would be cool. I guess there might still be clock heterodyning to deal with, though. Hmm.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 06, 2010, 07:53:21 PM
It's a tough one. May require me to do some deeper reading on techniques for advanced PCB design. I know about ground planes and separate power rails and so forth, but if I did that project I'd want to really do it right. The only thing is that I'd really prefer to do something which uses easily available parts. I know from previous projects that anything you can't get at Small Bear apparently turns a lot of people off.

To come at this from a different direction, one which flies in the face of mojo, I wonder if a TZF flanger could be made with 2 PT2399's? Of course, the shortest delay is too long, but what if you mixed the clean, undelayed signal, plus a static delayed signal, plus a modulated delay signal? Since you have the clean signal there, it wouldn't feel like there was latency; the flanging would just be slightly behind the note attacks. Maybe I'll wang it together and see how it sounds, as I have a bunch of PT2399's sitting around.

This doesn't mean I'm not into doing the analog TZF flanger. I am. But on the off chance that the PT2399 version sounded good, it would be cool. I guess there might still be clock heterodyning to deal with, though. Hmm.
I think that's been stabbed at before and the answer was no... no you can't, but then again, with some experimentation it might work I suppose, never say never.

The BBDs are easily available at small bear too, there's schematics for MN3007 & 3207 (Many cheap clones of which exist too) versions of both the Electric Mistress and TZF board so it should be easy to get parts and also make it jumperable to allow the user to choose which to use.

Oh I just remembered aswell, doesn't the overclocking of the MN3007/MN3207 via the 4049 buffer push it over than range of human hearing anyway or something so Heterodyning should be less of a risk or am I making that up.
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 07:59:40 PM
Thanks as always for your input Dave. 3 HF clocks, hmmm, didn't think about that.
Is it just clock noise that you dislike about charge pumps?

The EM is a big job looks like, but there's a lot of interest, more board sales, cheaper prices, kudos, support from the "old hands" of the forum and doubtless an endless stream of Scarlett pics posted to keep your spirits up during the slog (that will probably be the only part I'll be any help with)..... what do you say Taylor?

Edit: By all means, have at the PT2399's as well ;D
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 06, 2010, 08:11:56 PM
Seriously though, if you want some help breadboarding or researching, shout out, its a lot of work to do on your own.
Right now, however, I'm going to bed before I have to get up again.
Title: Re: What else would you like to see PCB projects for?
Post by: oldschoolanalog on September 06, 2010, 08:18:30 PM
Is it just clock noise that you dislike about charge pumps?
Nah. For me it's just one more unnecessary variable to add to the mix. I am a big fan of using a proper, clean 18-24VDC power supply and regulating things at the effect.
Just a personal choice.
Seriously though, if you want some help breadboarding or researching, shout out, its a lot of work to do on your own.
+1. I'd be happy to help any way I can.
Just PM...
@Scruffie: >Oh I just remembered as well, doesn't the overclocking of the MN3007/MN3207 via the 4049 buffer push it over than range of human hearing anyway or something so Heterodyning should be less of a risk or am I making that up.<
Heterodyning is the sum & difference frequencies when clocks "meet". The sum is usually not an issue. The difference is where things get messy. Overclocking itself may or may not be the answer to that problem. It's how "far apart" the clocks are. And filtering, layout, etc. (See link in my post above).

Title: Re: What else would you like to see PCB projects for?
Post by: mrslunk on September 07, 2010, 01:33:02 AM
I personally would love to see a pcb for the Chopped OC-2
I've been wrestling with the schematic trying to make a decent layout to no avail.
*rage rage rage*
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 07, 2010, 01:42:28 AM
Heterodyning is the sum & difference frequencies when clocks "meet". The sum is usually not an issue. The difference is where things get messy. Overclocking itself may or may not be the answer to that problem. It's how "far apart" the clocks are. And filtering, layout, etc. (See link in my post above).
Yeah that's kinda what I thought but I was going from memory and thought I read something along those lines and figured maybe both clocks being high up might help to cancel out the mess of the cross but apparently not.

I personally would love to see a pcb for the Chopped OC-2
I've been wrestling with the schematic trying to make a decent layout to no avail.
*rage rage rage*
How does the EHX Octave Multiplexer measure up to the OC-2...? Rather than chop, couldn't you just use the Multiplexer that only has one octave anyway, but I must admit to not having checked over both schematics really, or hearing the demos as I found very few OC-2 demos.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 02:19:49 AM
I've already got a chopped OC-2 PCB completed. Just need to make a few slight changes, order another round of prototype PCBs, and then it'll be ready to go.
Title: Re: What else would you like to see PCB projects for?
Post by: Mich P on September 07, 2010, 03:17:37 AM
A reverb tremolo project oriented fender
Thanks,
Mich P.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 03:19:30 AM
Hmm, do you mean a tube reverb and trem like you'd find in a Fender amp? I'm not a tube guy, so that's probably not something I'd be able to do at this time.
Title: Re: What else would you like to see PCB projects for?
Post by: markeebee on September 07, 2010, 04:03:02 AM
Just freestyling now, but if we (and by we I mean Taylor  :icon_biggrin:) are designing from scratchish, I've often thought about combining a gate, a step sequencer or rudimentary drum machine and maybe a looper to make a Slicer type thing.

If no takers, I'll probably try to hack it myself but it will take me several years.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 04:11:30 AM
If, for each step, you just want on or off selectable, then you could marry Andrew's Vanishing Point:

http://tech.thetonegod.com/

To the audio portion of the Tremulus Lune. No hacking required, since the Vanishing Point drives an LED and the Lune uses an optocoupler as the volume control unit.
Title: Re: What else would you like to see PCB projects for?
Post by: markeebee on September 07, 2010, 04:46:36 AM
Thanks Taylor. I was thinking pretty much the same, but I'd like to vary the "on" duration as well and I thought a gate would be the way to go.

Sorry, hijacking. I'll take this to another thread, sometime.
Title: Re: What else would you like to see PCB projects for?
Post by: Mich P on September 07, 2010, 08:23:27 AM
Taylor say :
"Hmm, do you mean a tube reverb and trem like you'd find in a Fender amp? I'm not a tube guy, so that's probably not something I'd be able to do at this time. "

Hi taylor not specially tube but reverb IC's maybe or the belton brick seems ok !
and a good tremolo
And yes oriented fender.
I think it would be a great pedal !
Mich P.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 07, 2010, 10:31:54 AM
Oh just to make the Flanger even more Complex (and crazier) I dug up these 3 Sound Clips by Mr.Giles for his Bounce Mod he did to an Electric Mistress... TZF Bouncing???
http://www.aronnelson.com/DIYFiles/up/bounce1.mp3
http://www.aronnelson.com/DIYFiles/up/bounce2.mp3
http://www.aronnelson.com/DIYFiles/up/bounce3.mp3
Title: Re: What else would you like to see PCB projects for?
Post by: therecordingart on September 07, 2010, 11:10:42 AM
Right, it's not about parts count (I have done PCBs for things with more parts than that), it's more to do with the mains wiring, tranformer, high wattage resistors, etc. Projects like that scare off a lot of people, and when the number of people interested goes down, the price per board goes way up. If you do decide to do the layout, I will happily offer whatever help I can.

Do you know of anyone that I can hire to do the layout?
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 02:20:42 PM
I don't know of anyone who would do it for much less than the price of one of these amps used on ebay, I'm afraid.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 03:23:10 PM
Oh just to make the Flanger even more Complex (and crazier) I dug up these 3 Sound Clips by Mr.Giles for his Bounce Mod he did to an Electric Mistress... TZF Bouncing???
http://www.aronnelson.com/DIYFiles/up/bounce1.mp3
http://www.aronnelson.com/DIYFiles/up/bounce2.mp3
http://www.aronnelson.com/DIYFiles/up/bounce3.mp3

Hmm, so what's happening here, multiple LFOs?
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 07, 2010, 03:31:20 PM
Oh just to make the Flanger even more Complex (and crazier) I dug up these 3 Sound Clips by Mr.Giles for his Bounce Mod he did to an Electric Mistress... TZF Bouncing???
http://www.aronnelson.com/DIYFiles/up/bounce1.mp3
http://www.aronnelson.com/DIYFiles/up/bounce2.mp3
http://www.aronnelson.com/DIYFiles/up/bounce3.mp3

Hmm, so what's happening here, multiple LFOs?
It's from the Eventide Instant Flanger apparently, it's meant to immitate 'jiggling' of the tape as it recovers from being put into TZF i'm led to beleive.
But yeah, basically I think it's just additional LFOs (on the schematic I saw it just used a single LM324 and few passive parts to accomplish)

I can't find the right schematic at the moment, but here's it implemented on something else http://img.photobucket.com/albums/v317/StephenGiles/bnce_clock.gif
Title: Re: What else would you like to see PCB projects for?
Post by: jmasciswannabe on September 07, 2010, 03:33:05 PM
+1 A/DA Final Phase
Title: Re: What else would you like to see PCB projects for?
Post by: space_ryerson on September 07, 2010, 04:22:53 PM
The Randall RG100ES.
You'd want to re-arrange that PCB a bit; maybe split the pre and power amps to separate boards. There's a well known problem with channel bleed on those amps. Granted, they can be fixed by moving two wires, but still. Also, RG answered a thread I started years ago with a bias mod that seemed really good. It was over my head at the time...perhaps it is time to revisit  :)
Title: Re: What else would you like to see PCB projects for?
Post by: olslick on September 07, 2010, 04:54:07 PM
mutron octave divider and maestro parametric filter, please.
Title: Re: What else would you like to see PCB projects for?
Post by: tiges_ tendres on September 07, 2010, 05:23:53 PM
mutron octave divider and maestro parametric filter, please.

Seconded!  Those are two that I dont believe have been all that well documented.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 08:54:40 PM
+1 A/DA Final Phase

Is a schematic available for this?
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 07, 2010, 09:07:05 PM
+1 A/DA Final Phase

Is a schematic available for this?
http://www.adadepot.com/adagear/gearpages/stompboxes/ADA-Final-Phase.htm Not easy to read really.
Apparently (according to the Re-Issue of this) The Distortion section didn't sound good so would probably need replacing with something else too.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 07, 2010, 09:49:26 PM
http://www.adadepot.com/adagear/gearpages/stompboxes/ADA-Final-Phase.htm Not easy to read really.
Apparently (according to the Re-Issue of this) The Distortion section didn't sound good so would probably need replacing with something else too.

Ok, interesting. I actually was playing around with something like this a while back, using the TAPLFO which outputs PWM. I was just doing a modified Phase 90, but using switched resistors instead of JFETs. Never got too far with it, but I could see this project happening, perhaps sooner than a TZF. Even though tap tempo is not of much importance to me with phasers, using the TAPLFO gives us some really nice waveforms, and a lot of versatility with low parts count. Using switched resistors means not having to match JFETs. So this is something I'm very much interested in. I would actually want to do a 12-stage version if that seems reasonable.
Title: Re: What else would you like to see PCB projects for?
Post by: jkokura on September 08, 2010, 12:21:32 AM
It would be kinda cool to have 4 boards from Taylor all about Modulation with Tap tempo: Phase, Flange, Trem, Echo with Modulation...

Final Phase and TZF Flange would be cool.

Jacob
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 08, 2010, 09:36:21 AM
Here's a demo of the A/DA Final Phase http://www.youtube.com/watch?v=-j9Uf_uiSc8 (Only one about as far as I know)
Although I suggested it, Since I started getting together a run of EHX Bad Stone boards (which I find a bit more musical than that demo after listening and useful with the vibrato option) i'm not so sure i'm so interested, I don't really feel the need for Tap Tempo Phaser either really.

I still vote for the TZF first and the Analog Delay would be nice (That could work with Tap Tempo like the Deluxe Memory Boy) also How about a True Stereo Chorus with all the bells and whistles on board Akin to a Rackmount one from the 80s sorta thing but in a Stompbox format... now that could be fun... Say... Speed, Depth, Delay, Mix, Level Knobs & Vibrato and LFO Speed Switches And of Course True Stereo Outputs, could be based off any of the Favourite Chorus builds, just all on board and snazzed up a bit.
Title: Re: What else would you like to see PCB projects for?
Post by: deadastronaut on September 08, 2010, 09:55:38 AM
boogie type dist/para eq/chorus/delay....all in one...with a send/return to add effects in line (ater the eq)too...oh..and a/b switch..

greedy?...yes! :icon_mrgreen:
Title: Re: What else would you like to see PCB projects for?
Post by: oldschoolanalog on September 08, 2010, 04:07:28 PM
Greedy?
Synthi HiFLi.  :o
Now that's greedy.

Just joking...
Does make a TZF flanger look simple by comparison, eh?
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 08, 2010, 04:24:33 PM
I have no problem with monstrous, complicated designs. In fact I very much enjoy that stuff, and love a chance to learn new things. The only issue is whether enough people will be interested - if we could reasonably guess that lots of people wanted an all-in-one effect with specifically those effects in it, then I would do it. I don't think that's the case though.

Now the Hi-Fli.... hmm. It's interesting, but I'm not sure it does much that can't be done these days with a few separate pedals (just from quick research). The only really special thing there is the frequency shifter, but I wonder how they managed to get a frequency shifter along with everything else in that size box at that point in history? It can't be a full-on thing like a Bode, or I would expect it to take up that whole case by itself.
Title: Re: What else would you like to see PCB projects for?
Post by: Perrow on September 08, 2010, 05:25:27 PM
I know there's been a lot of nice complex effects projects thrown into this thread, so I'll go off on a tangent.

I'd really like to see a smallish SS amp (5-10 watt, might even be a chip-amp for my sake) with integrated tone stack and gain/overdrive/dist/fuzz (call it what you want). If you'd really want to please me, throw in a foot switch option for clean/overdrive channels and maybe a line in option for practicing to mp3's. Just a nice small simple practice/effects testing amp a little more powerful and versatile than the Ruby or Noisy Cricket.

It feels like I've looked high and low for something like this and only found two or three that doesn't quite do the trick.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 08, 2010, 05:31:23 PM
Hmm, it's an interesting idea, but again it needs to be something that does not require messing with mains power or getting special transformers. If there is an amp like that that can be powered on a single-sided power supply, it might be something worth looking at. I do think there's some stuff like the TDA2030 chip that works this way. I was messing with it a couple of years ago but never got too far.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 08, 2010, 05:36:14 PM
I know there's been a lot of nice complex effects projects thrown into this thread, so I'll go off on a tangent.

I'd really like to see a smallish SS amp (5-10 watt, might even be a chip-amp for my sake) with integrated tone stack and gain/overdrive/dist/fuzz (call it what you want). If you'd really want to please me, throw in a foot switch option for clean/overdrive channels and maybe a line in option for practicing to mp3's. Just a nice small simple practice/effects testing amp a little more powerful and versatile than the Ruby or Noisy Cricket.

It feels like I've looked high and low for something like this and only found two or three that doesn't quite do the trick.
Would this do you? http://www.diystompboxes.com/smfforum/index.php?topic=86840.0

and
Ambitious, I like it.
Ambitious? I could do with an A/DA STD-1 PCB if you wanna go for ambitious  :icon_mrgreen: sadly, probably alot less interest in that one.

Quote
The Randall RG100ES.
I don't know if it's of interest to you but while i'm here... there was a PCB for a Mesa Rectifier Amp but converted to J-Fets like the Randall around somewhere, I have the files saved but the thread should still exist... both the same kinda High gain area.

If you can find those files I'd be in debt to you sir!
Did you get my PM?
Title: Re: What else would you like to see PCB projects for?
Post by: the3secondrule on September 09, 2010, 05:07:41 AM
I've had a lot of fun doing the PCB projects for this forum. I know that I really enjoy building on manufactured PCBs with all the "pro" goodies, and from the emails I get I can tell that a lot of people feel the same way. I never thought it would make much difference, but since I've started working on these, my etching rig has been sitting lonely and unused for quite some time.  :icon_wink:

Anyway, I was just curious what else you guys would like to see a PCB for. I do have some things cooking up, but other suggestions are greatly welcomed. I am still working on the tap tempo stereo delay, and I also have a clean analog octave down board (based on the Oc-2) that is near completion.

What else would you like to see?

Ibanez Flying Pan, or some sort of ring modulator would be neat!
Title: Re: What else would you like to see PCB projects for?
Post by: snufkin on September 09, 2010, 06:42:24 AM
e&mm harmony generator
e&mm pitch to cv (although I already have this sitting half populated for the last 2 years :icon_rolleyes:)
cut down mutron biphase
Title: Re: What else would you like to see PCB projects for?
Post by: dmc777 on September 09, 2010, 09:38:46 AM
If we get it verified the TZF Electric Mistress (Or another Flanger... there's a schematic for a MN3007 MXR M117 By Fender3D which would make a great TZF Flanger I bet) All on one PCB Would be great to see.

A Stacked Chip Analog Delay of Some Description (Like a Memory Man but for V3205 or Those 8Pin BL3208s)

A Good Chorus Project would be nice too, not sure what kind though.

A/DA Final Phase? We had the Flanger...

A High Gain Distortion like the DieFet or Dr.Boogey with on board MAX1044 Doubler.

What he said. Although I'd like to have a blend/level control on the chorus and delay. Delay would be nice with tap tempo and expression pedal as well. I'd also like to some projects pcbs that are on Beavisaudio page if possible. Something like the trotsky and the crazy Rat he made.

An Acoustic Simulator Project like Mark Hammers Woody or the AC-2

That's my input, in order of preference.
Title: Re: What else would you like to see PCB projects for?
Post by: oldschoolanalog on September 13, 2010, 11:42:58 AM
Bump.
Any news/thoughts/ideas?
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 13, 2010, 03:46:01 PM
I'm afraid they are all over at the new Forum amp thread Dave. I'm disappointed, I was looking forward to something unusual out of this thread. Oh well, maybe next time.
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 13, 2010, 03:57:53 PM
Well, it doesn't have to be one or the other. The TZ flanger is a great idea and it will probably happen, but it's such a massive undertaking to do it really well. I'm not sure I have the skills yet. I don't want to do a hack job of it.
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 13, 2010, 06:36:18 PM
Well, it doesn't have to be one or the other. The TZ flanger is a great idea and it will probably happen, but it's such a massive undertaking to do it really well. I'm not sure I have the skills yet. I don't want to do a hack job of it.
You said you like a challenge  :icon_mrgreen:

Although there are things to take into consideration with a layout of such a circuit, I wouldn't think it would be tooo hard to layout right, I mean... Marcusw' layout was done on an a standard EM Board with an Add on circuit and that turned out fine so I think with a bit of care (just seperating the layouts a bit and not crossing lines) it'd probably work fine, on board pots are going to help I imagine too with the lack of wiring to cross over so I think if you posted the layout before you had it commisioned so that people could cast a decent eye over it we probably wouldn't run into too much issue...

Your layouts of what i've seen have been nice and clean already, you don't seem underexperienced!
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 13, 2010, 06:40:33 PM
If anybody is able to put together a verified schematic for a TZ flanger, I will give it a go. I think the things posted so far need some more work to get there, right? I also need to contact those who did/will do the work of designing these circuits/add-ons to work out the particular$ in private.
Title: Re: What else would you like to see PCB projects for?
Post by: diemilchmann on September 13, 2010, 07:37:47 PM
Micro synth  ;D ;D ;D ;D ;D ;D
Title: Re: What else would you like to see PCB projects for?
Post by: soggybag on September 14, 2010, 02:03:50 PM
Bad Stone Phaser
Title: Re: What else would you like to see PCB projects for?
Post by: jkokura on September 14, 2010, 02:12:08 PM
Tap Tempo trem.

Jacob
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 14, 2010, 02:22:15 PM
Tube Screamer
Title: Re: What else would you like to see PCB projects for?
Post by: Scruffie on September 14, 2010, 02:32:32 PM
If anybody is able to put together a verified schematic for a TZ flanger, I will give it a go. I think the things posted so far need some more work to get there, right? I also need to contact those who did/will do the work of designing these circuits/add-ons to work out the particular$ in private.
As far as we know... they shouldn't need anymore work no, aslong as they get verified as working I think they're good to go (Our Pal Old School Analog up there is hopefully working on the verification part)
Thomeeque is gunna be the main person to contact he did the 3007/3207 conversion schematics and did the design for the new TZF Board (Based off Marcusw old principal idea...) along with Old School Analog for doing the verifying bit. (Hope I didn't miss anyone there.)
Title: Re: What else would you like to see PCB projects for?
Post by: Skruffyhound on September 14, 2010, 03:21:15 PM
       I think it's almost there after a little tweaking. I believe you can do it, your boards have been well thought through in the past. This one is more tricky, but having read all the threads, it seems those in the know seem to think it is doable on a single board.
       It would be nice to be able to test the design before having to pay for the first test boards. I'm almost there where I can make double sided boards at home, let me know if you need a beta tester.
Title: Re: What else would you like to see PCB projects for?
Post by: azrael on September 14, 2010, 04:32:50 PM
So...whats everyone leaning to? TZF Electric Mistress using a 3007?  :icon_biggrin: I know I would love that.
Title: Re: What else would you like to see PCB projects for?
Post by: Lurco on September 15, 2010, 03:06:13 AM
Bad Stone Phaser
http://www.diystompboxes.com/smfforum/index.php?topic=86990.0
Title: Re: What else would you like to see PCB projects for?
Post by: Taylor on September 15, 2010, 03:17:14 AM
Bad Stone Phaser
http://www.diystompboxes.com/smfforum/index.php?topic=86990.0

He's posted twice in that thread.  :)
Title: Re: What else would you like to see PCB projects for?
Post by: RonaldB on September 15, 2010, 09:21:10 AM
How about a PCB design for the:

Lovetone - Ringstinger and Meatball

RonaldB