Here's a super quicky for your Saturday. Got a request over on Facebook for a simple voltage inverter using the 1044/7660 chipset. Great for when you need to power a positive ground effect like PNP Fuzz Faces and Tone Benders but still want to daisy chain it with negative ground effects or not use a battery.
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.