2x Jack female output 1x Arduino Nano 1x MCP4725 1x 78L05 voltage regulator (for converting 12V from eurorack voltage to 5V) 14x switches 14x 10k resistors 1x 100k resistor 1x Diode 1n4148 2x 10k potentiometer (4.7 k or 100k is Ok too)