Here is my latest design, a TBP-Looper:

A must for every hardcore-fuzzer for A/B-comparision and more.

Features:

* one or two true-bypass-loops
* auto-detection of loops in use
* LED-signalling can be prohibited for blind tests
* 0,5 mA current consumption resulting in a battery life of > 250 hours
* DC-jack

Didn´t have time to draw a schematic, therefore here are the guts for tracing:

enjoy,
analogguru

Here's a vero I did for a silicon fuzzface I built recently: SiFF+_v2.gif

It's essentially a Lovepedal Dragon/BBB etc etc, which is just a fuzzface with an input cap blend. I made the bias trimmer into an external pot, because I wanted to be able to dial in that glitchy, kitchy, misbiased sound occasionally: Here's the original trace of the Lovepedal that Greg_G did (thanks Greg!) -

It's pretty tiny (9x9 holes) and so should easily fit in a 1590A, if you are that way inclined: I stuck it...

Eagle files are included. Feel free to use these materials however you want---no permissions or restrictions are in place.

This is a modified 808. You can bypass any of the mods for the classic design, too. TS_Schematic.gif TS_PCB.gif TubeScreamer_MBP.zip

I whipped this up yesterday, and Mr. B Tremblay of Runoffgroove.com has reviewed the schematic and layout and given it the thumbs up. :thumbsup

PCB transfer art is at 600dpi. The PCB dimensions are approximately 2.15 x 1.25 . All the necessary files are in the zip archive attached.

Note: the schematic symbol for Q2 should be that of a darlington BJT, but I couldn't find one that worked right in Eagle, so I just used a plain old BJT symbol.

Note 2: Mr Tremblay says that he recently built one...

Where can I find a good pre-amp kit (in a stomp box) for a beginner?

Thanks!

mods, forgive me if i posted this in the wrong part of the forum...

found this on the forum, looked interesting, and i had the parts...so i tried to do a vero layout prior to trying to build it...
first, the schematic :

then the layout i did...i'm a little confused by the schematic, did i get this right? my biggest question i guess is if the b+ going to pin 8 is supposed to come off the bottom of the second trimmer, or directly connected to the b+?

:shock:

sorry, still just a newbe...

I hope this is the right area for this query. I am building a pedal that will house both a chorus and a Fuzz unit (Big Muff-type circuit). Each unit is individually operable, then I want to include a blend knob that allows the user to control how much of each unit is used when operated simultaneously. I was told by a local tech that this would not be a very advantageous design and that I'd be better off just building two different pedals. I'm not sure I agree, but before I go further, I'd ask...

here it is little circuit for nice led dimming.......it can be used in wahs,and other light controlled
effects.........it is PWM and simple

boris

If someone needs it as i did, please use it.
Not so neat but you can easily fit this into 1590b with battery space.
layout
transfer
Jun

hey guys-
ive got a three knob bad stone and am interested in anyones experience with swapping out the opamps to perhaps increase quality of sound.
i have tried 4 TL072s and funnily enough it sounded nice and crisp but....there seemed to be more hiss to my ears at least. this may be due to supposed increased fidelity of '72s which increased perception of high end and thus more hiss?
as there are sockets in the pedal its an easy exercise to swap out opams to see whats what.
can any of you more...

All based upon Grey VOX layout, some components moved to use common pinout transistors without bending legs

I've put together a schematic for an OD/distortion/fuzz inspired by (stolen from) soulsonic's fourbanger. It's three boosters threaded together, comprising of a simple silicon transistor boost posted by mictester -> soulsonic's CNO -> AMZ miniboost. I'm waiting on parts before I can try it out, so if anyone could look over it and offer advice/suggestions/improvements/potential problems/howling errors, I'd be very grateful.
Threebanger_Overload_schematic_v1.bmp

Here's a new layout for the Mockman 2.0 from runoffgroove.com. Full circuit info can be found here:

The attached PDF has the layout, schematic, BOM, build notes, and 600dpi transfers.

Big thanks to Mr. Tremblay at runoffgroove.com for looking over the layout and helping me troubleshoot. :thumbsup

////

Here is another project based over lm386

PDF with schematics and PCB ready to use:

And my version of front panel

Enjoy

If anyone who can etch their own PCB wants to try this project to build a verified working Neo-Classic 741 Overdrive (gray spec 250) for yourself, I posted the same PCB transfer that I used at 300dpi in Adobe Acrobat format here:

Look under the PCB Transfer section for printing instructions and the download link. Even though I like to use PCB soldered pots for mounting purposes, you don't have to - just attach pot lug wires instead. But if you do like PCB mounted pots too, I recommend...

I banged this out because I wanted to use the Maestro Booomerang Wah as a stuck wah . I had some input from B. Tremblay of runoffgroove.com on this one as well, since he had played with the circuit quite a bit. The result is basically a Boomerang, but with an input gain trimmer. I find that if the input gain is a little too hot, you get some nasty frequency peaks. With the trimmer you can dial it.

I call it Devolver because that is the Spanish verb for to return (like a boomerang). :lol:...