That MIDI and MIDI over USB board give four 0 to 5V output signals, CV1, CH2, CV3 and CV4. CV1 and CV2 are filtered.
The CCNumber are 1, 2, 3 and 4 on chanel 1. That can be easily modified in the code.
The board also outputs a trigger signal on an clock impulse. The poti is used as a clock divider.
For uploading code on the Arduino the Midi In jumper has to be off. One has to set the jumper for getting Midi in on the Arduino.
The PB202 MIDI to CV was designed by Wolfgang Spahn, 2017-20.
It is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.