Body Hacks: Building An Open-Source, Theremin-Like Vibrator

For your postprandial pleasure I present the an open-source vibrator that you (or your partner) can play like a theremin. The story of how it came to be is pretty amazing and involves FCC chip lookups, bit-tracing, and lots of assembly code. In short, it's an amazing effort in DIY hardware hacking that serves the dual purpose of education and giving pleasure.