This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, January 23, 2023

Earthquaker Devices Hummingbird V2

 New Year, might make Modulation Monday a thing. We'll see. Anyway, here's the EQD Hummingbird V2. It's derived from the Vox Repeat Percussion and now updated to use the 2N6027 in place of the obsolete 2N2646. There's also a couple other improvements from the earlier version so a new layout seemed like a good idea. Schematic for reference.



Friday, December 23, 2022

Suhr Rufus Fuzz

Happy Fuzz Friday, everyone! Hope everyone is having a good end of the year and holiday season.


Here's the Suhr Rufus Fuzz. If you ever wanted a Fuzz Face with an input buffer and big ol' ton stack at the end, this would be right up your alley. Here's the schematic for reference. Should be able to squeeze it into a 1590B.



Tuesday, November 22, 2022

Jackson Audio Amp Mode

Here's Jackson Audio's MOSFET boost, the Amp Mode. Pretty simple MOSFET circuit with a BJT output buffer. Easy fit in a 1590B. 



Tuesday, November 1, 2022

Caroline Wave Cannon

 Here's a very cool Rat variant now out of production. Fairly straight forward Rat with a variation of the Ruetz Mod, LEDs for clipping and a switch to toggle a feedback loop. On the original this is a toggle (SPST), but would be fun to put on a momentary footswitch. Couldn't confirm the IC in the original, as the markings were painted over. Might be easy to assume the IC is an LM308 or OP07 since it's based on the Rat, but it's missing the compensator cap (30pF cap across pins 1-8 in a normal Rat) so I'm guessing a TL071/LM741, but an OP07 would work too. Fits nicely in a 1590B or 125B. Schematic here




Tuesday, October 18, 2022

Boss SG-1 Slow Gear

 The Slow Gear emulates a guitarist riding the volume pot or a volume pedal, creating a swell effect. This will fit comfortably in a 1590B or 125B, though with the 1590B you'll probably want to wire the pots off board or use long-leg right angle pots mounted on the component side. Here's the schematic for reference.




Tuesday, October 4, 2022

J. Rockett Tim Pierce Overdrive

 Thought this one was interesting so I gave it a go. It's a fairly typical Rockett overdrive (.45 Caliber, Animal, Blue Note, etc.) with a fairly typical MOSFET boost (AMZ Booster, EQD Black Eye, etc.). Fits in a 125B with dual footswitches. Schematic and discussion found here. Fabricated version available on the store.


Friday, September 23, 2022

Solid Gold FX Rosie

 Happy Fuzz Friday, all! Here's a cool silicon Tone Bender style fuzz from Solid Gold Fx. Aside from using silicon transistors, the first stage is a JFET. When the switch is closed it adds in a 4.7uF input cap in parallel with the 330pF input cap. You could replace the switch with a B100k pot (lug 1 to Sw1 pad, lugs 2-3 to Sw2 pad) to blend the two values. Set the trimmer to 4.5v for the JFET and adjust by ear as needed.