Avrsyn-Pcb
Peter writes in with this neat looking DIY synth… – “You’ve seen plenty of DIY circuits for building a homemade analog synth. Here’s your chance to build a fully digital emulation you can hack yourself. The result is a synth that’s as full-featured as many commercial hardware models, but with a unique architecture and total programmability. You can buy the whole thing for well under $100, then program it to do whatever you want, with some significant resources already growing on the Web. Cheap, retro sounds, digital flexibility (with full MIDI support), and 100% hackable? Could be a perfect music hardware for the Maker. (See also the x0xb0x, of course, but this is a little smaller and simpler, and perhaps a better choice for getting started hacking.)”Link.

Related:
AVRSYN Monophonic Virtual Analog Synth Kits – Link.