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I built the Kittywampus (Mr. Black Thunderclaw) that whines like crazy. The pedal calls for an LT1054 charge pump, I used an LT1054CP (isn't that the only 1054 you can get?). If I put in an ICL7660SCPAZ the pedal is quiet and works fine. It's weird that the "correct" IC doesn't work and the...

A question for you geniuses. I have a Tele Partscaster with two Humbuckers, two 500k pots. I want to use two push-pull pots so that one of them will split both humbuckers at once so they're single coils, and the other one to do serial/parallel operation. It's this wiring diagram. Now, some say...

I really like this fuzz, but it could maybe use a bit more low end / body. Does anyone have any suggestions on how to achieve this? Increase C2? Or C5? To what values? Any help would be appreciated. Thank you.

I built a Katzenkönig on a Fuzzdog PCB and it is a brilliant dirt box, raunchy. I like it much more than a regular Rat. However, I feel it does cut low end too much. What could I do to preserve the Bass? Up the input (68nF) and output (1uF) caps? To which values? Thank you!

Hi, when I bought the Pendulum the LDRs weren't available. I'm in Europe and I ususally order my parts from these three shops: UK Electronic Musikding Banzai The links above show what they are offering LDR-wise. None have the requred "5k-10k light/500k dark". Any tips on what to buy? Or any...

Hey, what would one do if you wanted to have not just the volume knob on the Mini Muffin, but make the gain adjustable? Just using a pot for R2? If so, which value? JMK pedals had a PCB for this years ago, with gain and volume knobs. Theirs was the transistor version of the Muff Fuzz, not the...

You can build the Muriodea for a standard Rat, but how about a fourth knob for the infamous Ruetz mod? And the different Rat models (Standard, Fat Rat, You Dirty Rat, Turbo Rat) - at least to my knowledge - only differ in the clipping diodes (Silicon, Mosfet, Germanium, LED), but you can only...

Dear forum, I don't feel confident enough with my diagram reading skills, any help would be appreciated. A friend asked me to build a Mojo Hand Colossus (=a variant of a Russian Muff with mids control and an input cap switch), he had an original years ago. I can't find a PCB for it, but I have...

Fred Briggs is a well-known circuit designer, there are PCBs for several of his circuits like the COT 50 and others. I am not aware of PCBs for his other projects, like his modded EP booster or stripped-down Diamond Compressor and many others. But I am most interested in his own drives and "Amp...

There are several variations of the Gibson Varitone or the "Stellartone Tonestyler". Essentially you can (rotary) switch different capacitors on your guitar for different sounds: bass cut, no load, cocked wah etc. Maybe it's just a gimmick, I don't know, but it might be cool to try out something...

I have a Tech 21 Roto Choir that I dearly like. How about a PedalPCB along those lines, Strymon Lex, Neo Ventilator, EHX Lester, Pigtronix Rototron .... Could this be applied to the Pythagoras or Octagon?

Schematic

Tagboard Deluxe

Black Arts Toneworks Black Forest is their version of the Colorsound Overdriver with switchable caps and different pot values. Maybe this would be an interesting mod for the "Powersound" PCB?! http://tagboardeffects.blogspot.com/2014/04/black-arts-toneworks-black-forest.html...

Click on the names for schematics. Red Llama Green Rhino (=Way Huge Tubescreamer variant) Purple Platypus (=Red Llama + Octave) Camel Toe (= Red Llama + Green Rhino) [no schematic for the two-in-one]

https://www.ehx.com/products/germanium-od Schematic: http://1.bp.blogspot.com/-69MXRdBho44/VBlv8INmLbI/AAAAAAAAIng/bb-E6QePvCc/s1600/EH%2BGermanium%2BOD.jpg

Schematic: http://freestompboxes.org/viewtopic.php?f=7&t=680&p=261904&#p261904

Schematic: http://revolutiondeux.blogspot.com/2010/06/mad-professor-sweet-honey-overdrive.html

Schematic (and smods): http://revolutiondeux.blogspot.com/2010/06/bjf-honeybee-overdrive.html

Schematic: http://revolutiondeux.blogspot.com/2012/01/lovepedal-kalamazoo.html