This arduino program converts voltages from an eurorack (modular synthesizer) into MIDI messages.
This program requires you to feed the eurorack voltage to de A0 ADC-pin of the arduino. Note that you need to adjust -5...5 into 0...5 using e.g. an opamp.
Written by Folkert van Heusden mail@vanheusden.com Released under AGPL v3.0.