fequencyresponse.ch

frequencyresponse.ch is home to a number of synth related projects including the follow. You'll find more info on each on the site. You might recognize some of these from prior posts. Search for each via the top left to find them. Some include video.

ShuffleBox
Midi-DIN sync interface with shuffle & Start/Stop functionality. Available as a DIY kit so far.

dsPIC® VA Synthesizer
dsPIC® based VA Synthesizer
(under development)

Shuffle X0X
Shuffle mod for TR-606, TR-808 & TB-303

XRom
XBase 09 HiHat-Rom Expansion (discontinued)