A Super Simple Synth built from an Arduino and a Handful of Pots! - This 8-Bit Life
Instructables user [TobaTobias] has put together a really nice tutorial for building a synthesizer out of an Arduino and a handful of 5K Pots! He’s got his sketch (code) up on the instructable page along with everything you’ll need to know to build one. After watching the video below it looks/sounds great. It’d be awesome to hear it hooked up to decent sound system and possibly mounted in an acrylic box with some lighting. The only other thing this needs is a shield!
Check out the instructable here!