🎹 ardu-r2r-midi-cv (aka CMCEC) Cheap 2 channel MIDI to CV converter on 2x12bit R2R DAC with arpeggiator (midi / external clock), midi clock output (with divider), simple polyphonic mode, analog portamento, automatic linearity calibration, gain calibration and tuner 🚧 README and refactor (v2.0) in progress... 🚧