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.

Friday, May 25, 2018

D*A*M Flesh Head

Here's a Tone Bender Mk. II variation from DAM for Fuzz Friday. Originals use PNP transistors are are positive ground effects, but it could be built with NPN transistors as well (negative ground). This varies from a Mk. II in that there is an added tone control (Flesh), and the fuzz control is a fixed resistor. Schematic here. The perf side of the layout reflects the positive ground orientation of components, and the pcb side the negative ground orientation.


Tuesday, May 22, 2018

Way Huge Fat Sandwich

"Way Huge" not only describes their enclosures, but also many of their circuits! Not quite as big as the Pork Loin, but still a monstrosity in its own right. 1590BB unless you wire all the pots offboard, then it'd fit in a 125B ok. Schematic and all that jazz here on FSB.


Thursday, May 17, 2018

Run Off Groove Double D

Still a few Run Off Groove designs I haven't laid out yet, and this is one of them. It's based around the 4049 IC chip and features 2 channels of amp-like distortion. I've laid it out to fit in a 125B with dual footswitches. Bias Q1 to 4.5v and then adjust to taste as usual. More info, schematic and footswitch wiring diagram on the ROG site.


Tuesday, May 15, 2018

TAD Range King

Nice little booster from Tube Amp Doctor. There's still a little bit of confusion on FSB over the correct value of the resistors biasing the base of the transistor, but this should work. Schematic and discussion here.


Friday, May 11, 2018

KMA Fuzzly Bear

For Fuzz Friday, here's an interesting take on the Bosstone fuzz with a few value changes, extra diodes, and a voltage sag control. Schematic and discussion here. I did add a bit of a mod to this–the resistor marked "0-10k" limits the minimum setting of the drive pot. Stock, lug 1 goes directly to ground. But IMO, it's a bit better to have that limiter there, otherwise it's just another way to mute the pedal. So adjust that to taste.


Tuesday, May 8, 2018

Way Huge Pork Loin

Here's a really big one to kick off the week (might be the biggest dirt circuit I've ever laid out). The original Pork Loins have the Clean Tone, Presence, and Drive Mix pots internally, with 3 internal pots internally, and I've gone with the same configuration here. Schematic can be found here on FSB.


Thursday, May 3, 2018

Run Off Groove Nurse Quacky

Here's Run Off Groove's take on the Dr. Q by JD Sleep with mods and improvements suggested by Mark Hammer and Jack Orman. More info, schematic and sound clips here.