More electronic stuff and helpful links:
WILLZYX Music • x0xb0x kits, rare parts, offical successor of Adafruit x0xb0x
Acidlab • another great TB-303 clone, home of the Miami Drum Machine
Ada Wiki • the x0xb0x Wiki
x0xb0x forum • the original x0xb0x forum
x0xb0x construction manual • the how to do
x0xb0x is Copyright (c) Limor Fried & Adafruit Industries