I built a Thomas Henry Mega Percussive Synth. It’s a 3-voice percussion synthesizer with a vast possibility of drum sounds, toms, bongos, hats, alien lasers etc. A flip of a switch opens the VCAs and you get a drone synth.
Mutable Instruments Shruthi with 4-Pole Mission filter board, based around SSM2164 chip. http://mutable-instruments.net
Music Thing Modilar Turing Machine random looping sequencer, it’s a circuit that produces clocked randomly changing control voltages. PCBs are housed behind Grayscale panel. This is an open hardware projec. http://musicthing.co.uk
Unique sounding hihat/voltage controlled noise source http://cv.hexinverter.net
A single-channel audio vca module based on the famous that2180 chip
Control voltage processor
A version of the Buchla Low Pass Gate http://www.clsound.com/