(http://experimentalistsanonymous.com/images/puplus/puplusschematic.gif)
(edit-thanks to ansil for helping me out with this! I fixed a few of my own mistakes, added resistor color codes, and a description.)
I actually drew this out without the circuit in front of me, off the top of my head, so one of the caps might be backwards or a pot value might be a little off. I can check when I get home. I'd post pictures of one, but the paint is still drying on the box!
PLEASE let me know if you try building it-I want to know if the schem works and what you think of the pedal.
If this schematic works, could anyone please draw a layout for it in .pcb format? I'll pay you like 5 bucks.
Soundclips at http://experimentalistsanonymous.com/puplus/soundclips/
-Colin
i am finishing it right now. i am at a different computer though so it will be a slow upload.. or do you want me to email it to ya.
Than anything I've built so far...
Awesome !!!
See that Ansil..there's a 386 in there !!!!
Hallelujah !!!!
yeah.. i know its about time.. lol. i havent' found a pedal yet that i can't slap a 386 in it and make it sound better..
I LOVE 386's! SO simple, so easy to use... they just amplify the signal if you groud 2 and 4, put yourself into 3, and take out of 5, and give it some voltage... just wonderful chips for me :) Glad I discovered them at radioshack (it was the very early days, early summer, "Hey, an audio amplifier, I wonder what this will do...")
Thanks, ansil. I'll check the schematic and then the .pcb file when I Get home.
-Colin
Looks cool! And a kind of artsy-fartsy drawing too. Did you use a crayon?
Looks cool, Colin. I will take a look at the soundclips.
Quote from: mattvLooks cool! And a kind of artsy-fartsy drawing too. Did you use a crayon?
Nope, it was #2 mechanical pencil, enlarged a couple times :)
Quote from: Marcos - MunkyLooks cool, Colin. I will take a look at the soundclips.
Let me know if you build it.
Ansil-thanks a ton for the redrawn schematic and parts layout. I appreciate it like berzerk.
Can anyone do me a .pcb version of the board so I can send it to futurlec? I'll pay you a couple dollars.
-Colin
You made a cool noisy thing, Colin. I have lots of stuff to finish, but if I build it I tell to you.
Hey Colin, I did the pcb file. Check your e-mail.
is that the complete schem on this? it looks as if the top of it
was chopped off....
i would love to build it....
could someone email it to me?
Yeah, it's complete.
Marcos-Thanks a ton for the PCB file. I think I'll be ordering 10 futurlec boards in a minute.
Casey-No, the schematic is just fine... how come it looks chopped?
Let me know if you build it, both of you :)
-Colin
yeah, im looking forward to it......
thanks for the schem.... :wink:
Those sound clips are totally awesome, Colin...I'll be building one as soon as I can round up an LM386 and some switches...hopefully tomorrow. Thanks for posting this schematic!
-Ryan
Quote from: RJThose sound clips are totally awesome, Colin...I'll be building one as soon as I can round up an LM386 and some switches...hopefully tomorrow. Thanks for posting this schematic!
-Ryan
Thanks for the kind words :)
Let me know how it turns out.
-Colin
Great selection of clips! :D
I going to try building one with an 18V supply using the JRC386BD.
I'm really curious how your Futurlec boards will come out. have you used them for boards before?
Take care,
-Peter
how did you figure out the bypass pin oscilation thing????!!!
this has been my secret weapon for almost two years now!!!!(looks like i dont have to be afraid to share now:].....)
looks cool!!!!!
doug
Quote from: Peter SnowbergGreat selection of clips! :D
I going to try building one with an 18V supply using the JRC386BD.
I'm really curious how your Futurlec boards will come out. have you used them for boards before?
Take care,
-Peter
I've never used the boards before, but they sure look perdy :)
Let me know how the 18v mod goes (lots of let me knows! I'm very repetitive!)
Doug - That's really cool. Do you have any circuits that do this? I found it out basically by thinking to myself "Hmm.. I wonder what a capacitor placed here would do... probably make it oscillate"
-Colin
yeah....i pretty much use it to get "gated arpegeator" type sounds....so its not oscillating when your not playing....if you look at the spec sheet its almost a perfict spot to tap into.....right above the collector of the first tranny....
cool stuff....
i use this in my "glitch computer" and my "????" pedals....
(in sort of a different way)
i knew somone would stumble on to this at some point....guess its off to the bread board to find a new secret weapom :]
keep up the good work....
doug
Doug-what was your site again? I remember seeing the glitch computer a while ago and thinking one of two things, either "WOW, I have to get one" or "eh", and I just can't remember which it was! Please enlighten me.
-Colin
its not on there....im working on the new one now....
the site thats up features my first to products....
(nether of witch i now sell...)
but here it is if you want to poke around....(3 hole pages!!!! :]....)
geocities.com/midfielectronics
doug
I definitely remember going to that page and thinking the random number generator was cool and wondering how it worked... I also remember hearing about the glitch computer, it was probably on the HC reviews or something.
Care to enlighten me/us? colin@experimentalistsanonymous.com
-Colin
random number generator....hmmm i dont have the scheme on the comp....
but its all descrete....basicly a fuzz driving an oscillator (pretty low frequency) with a misbiased tranny for gating...
nothing to complex....but it sounds freaking HUGE!!! (sound clip was recorded straight to the old comp YIKES!!!)
ill get around to drawing it up one of these days...
doug
Quote from: doug deeperrandom number generator....hmmm i dont have the scheme on the comp....
but its all descrete....basicly a fuzz driving an oscillator (pretty low frequency) with a misbiased tranny for gating...
nothing to complex....but it sounds freaking HUGE!!! (sound clip was recorded straight to the old comp YIKES!!!)
ill get around to drawing it up one of these days...
doug
Let me know when you do!
-Colin
Hey Doug, you sent me the schematic. I still have it.
Quote from: Marcos - MunkyHey Doug, you sent me the schematic. I still have it.
He sent it to me and I sort of redrew it... I think I'll breadboard it today.
-Colin
Can I ask a couple questions about the Parallel Universe schematic, please?
First, the 1k Starve pot...what is the third lug connected to? The schematic doesn't show what the end of the pot is going to.
Second, on the SPST oscillate switch...it looks like there's a pot (Freq I believe) connected to the switch and the caps...what value should that be? Or is that even a pot?
Thanks in advance for clearing those up...I wasn't able to purchase an LM386 today *shakes fist at the local electronics store* but I'm gonna try to get my hands on one asap.
Quote from: RJCan I ask a couple questions about the Parallel Universe schematic, please?
First, the 1k Starve pot...what is the third lug connected to? The schematic doesn't show what the end of the pot is going to.
Second, on the SPST oscillate switch...it looks like there's a pot (Freq I believe) connected to the switch and the caps...what value should that be? Or is that even a pot?
Thanks in advance for clearing those up...I wasn't able to purchase an LM386 today *shakes fist at the local electronics store* but I'm gonna try to get my hands on one asap.
the third leg of the pot connects to nothing. we are using it strickly as a variable resistor here.so its resistance will swing with the pots rotation. you also see the same result if you tie the outside lugs together and use the other open lug
The starve pot is being used as a variable resistor, so you don't connect ANYTHING to the third lug. Perhaps an "N/C" next to it would help stop confusion.
The freq pot IS a pot, yes... I don't know where the value went, odd that you were the first to catch it. It's 5k.
-Colin
OK, fixed the schem... Now there's "N/C" for not connected, the pot is labled... and something I Just noticed, the input stereo jack wasn't wired correctly in the schematic, so that's fixed too.
Sorry to anyone who got confused...
-Colin
Awesome, thanks for clearing that up!