Midi to CV R4
Midi to CV module made with Arduino Nano R4
Component List:
1x Arduino Nano R41x 74HC14 Hex Inverter with Schmitt-trigger inputs
1x MCP4725
1x 6N138 optocoupler
1x TL074
4x MIDI DIN female
3x Jack socket
2x 100nF capacitor
2x 10µF capacitor
1x 1N4148 diode
4x LED
14x 220Ω resistor
1x 470Ω resistor
3x 10kΩ resistor
If you want to customize this :
- Get rid of the 74HC14 or basically everything who's coming from the TX pin of the Arduino if you don't want the MIDI thru feature. I did that in order to merge a MIDI thru box and this module.
- I put a gain multiplier for my CC in order to achieve a range of 0-10V. This fit my personal taste, but if you just need a 0-5V range, replace the 12,13 &14 pins design on TL074 by a standard op-amp buffer (pins 1,2 & 3 or 5,6 & 7).
- If you don't need CC output, just get rid of MCP4725 and this last op-amp. You could also just use a TL072 instead of a TL074.
