Build your own synths and modules
Business Card Sequencer
The BCS packs a lot of sequencer into a tiny package! This 16-step circuit can work as a sequencer or as a handheld keyboard.
Business Card Synthesizer
Tiny synthesizer that can be played by itself or connected to other synth gear
VCO kit based on the Curtis CEM3340 IC.
Dual Mini Sequencer
2x 16-step sequencers in a small form factor.