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, March 27, 2017

Hjärt Müller Bass Drive

Here's an overdrive for my fellow bass thumpers. Fairly simple opamp-based drive section with soft clipping pushing a Big Muff tone stack. Should be an easy fit for a 1590B with board mounted pots. Here's the schematic for reference.


Friday, March 24, 2017

Way Huge Swollen Pickle Mk 2

For Fuzz Friday here's the newer and highly tweak-able Swollen Pickle from Way Huge. Like the Mk 1, originals use a MPQ3904 transistor array instead of individual transistors. Couldn't make that work this time around, so just stick with individual 2N3904s. Originals also have 2 of the controls internally, but what's the fun in that? All 7 pots are for external mounting and the whole thing will fit in a 1590BB with top mounted jacks fairly easily. Here's the schematic for reference. You'll notice a few values are a 10th of typical values found in a Big Muff (indicated by an * in the layout below). Not sure if it's a typo on the schematic or just the way Way Huge did it this time around. YMMV


Wednesday, March 22, 2017

Lovepedal Champ

Been a while since I've laid out an Electra and I came across the Champ schematic on FSB, so here you go. Should fit with a board mounted pot in a 1590A.


Monday, March 20, 2017

Barber Direct Drive

You asked for it, so here it is: the Barber Direct Drive. This layout follows the new compact version with 2 toggles–one for harmonics, the other for gain. The circuit itself is very similar to the original Tone Pump circuit with a few modifications. Should fit nicely in a 1590B.



Friday, March 17, 2017

CultureJam NoMoJo Fuzz

This was a originally an SMD 2-in-1 board CultureJam put out. On one side was a Fuzz Face and the other this Tone Bender. So I figured they'd be good Fuzz Friday layouts. They're not on the same board, but either one should fit in a 1590A.



Wednesday, March 15, 2017

Boss OD-1 Overdrive

Here's the Boss OD-1–the first of the tube screamer-type overdrives (yes, the first TS wasn't an Ibanez). It features asymmetrical clipping diodes (where a stock TS has symmetrical clipping) which gives it a thicker, more edgy sound. Initial versions of the circuit used a quad opamp, using 2 of the opamps as in the input/output buffers, but this was later replaced by the more common transistor buffers and a dual opamp to save cost and use more readily available parts back in the late 70s/early 80s.


Monday, March 13, 2017

Catalinbread Dirty Little Secret Mk. III (ish)

I've gotten a few requests for the Mk. III and found several good stock layouts on FSB, so I thought I'd go with a slightly modified version of the DLS Mk. III. This has an added presence control, as well as an onboard charge pump. It's designed for use in a 125B with top mounted jacks, and the pots are all board mounted. Here's the schematic the layout is based on for reference.