When I bought my Volca Sample I was disapointed with MIDI implementation – one channel for each track? Ehh? Immediately I grebbed Arduino and made MIDI adapter. Some time later I found mod with switch for mute. Today the cup ran… I added switch for memory too.
MIDI adapter is based on:
Points for solder switches connections – D301, D307 and common point:
Mounting Arduino Nano:
USB connector for programming:
DIN connector for alternative MIDI in:
+5V supply for Arduino stolen from capacitor: