Here's a new original design. :)
This one is a ring modulator, a simple and brutal square wave ringmod. With the frequency pot you can tune the carrier signal to the note you are playing to find really cool sounds. As usual with these CMOS based circuits it works best using hot pickups and using the neck pickup with the tone rolled off.
I did a demo video. Sorry about the lenght, I got carried away...
I don't really like how the artwork turned out. I was going for something a bit nerdy with the lord of the rings reference but it turned out too metal for me haha.. Peterg at the diystompboxes forum finished his pedal long before me and his box looks much nicer. Have a look in this thread, which also includes alot more info on the developing progress :)