The AVR SYNTH is a monophonic "virtual analog" synth based, originally, on the Atmel AT90S8535 microcontroller and was designed by Jarek Ziembicki. His aim was to check to see if a simple micro could be used for sound synthesis purposes. And the result? The AT90S8535 managed to do all the tasks: service front panel switches and pots, receive and process MIDI messages, and sound generation!
The AVRSynth uses 2 PCBs:
- Controller PCB, and a
- Carrier PCB housing all the panel components
The Carrier PCB virtually eleiminates all of the hard-wiring required in the MK1 unit
AVRSynth Datasheet and Build Guide