My Monotron Duo Teensy Duino 3. 1 USB Midi, plus digital potentiometers and DACs

I wanted to share how I MIDIfied my Monotron Duo from Korg. The TeensyDuino 3. 1 controls a dual DAC and a dual digital potentiometer. Many thanks to Marc Nostromo for inspiring this design. I plan to share the SW with Marc Nostromo s blog, what I came up with is based on the code that he originally posted in his blog (it was for the regular Monotron). The challenge with the Monotron Duo is that it requires two voltage controls (one for the ribbon, one for the octave), so it required some revers