Analog to Digital Converter Board 5VTransform analog voltage to digital with the Velleman MM112: Analog to Digital Converter Board. The MM112 allows analog to digital conversion of the input signal applied with a 12 bit resolution. Features 12 bit analog voltage to digital converter suitable for Arduino microcontrollersSpecifications resolution: 12 bit power supply: between 2.7 VDC and 5.5 VDC Protocol: 12C