Woot another 4 voices built and tested (simple saw tooth filter sweep).
Bottom to top ;
- Alchitry AU fpga
- 4 vcf/vca voice card
- another 4 vcf/vca card
- STM32 card for midi and patch storage
- Alchitry BR to give me access to pins

The whole thing consumes about 450mA so far but the FPGA isn’t doing much yet, just generating a sawtooth and 32 delta-sigma DACs for the audio and CVs.