This board features the L6470 (a.k.a "dSPIN") 3A, 8-45V bipolar stepper motor driver. It has built-in overcurrent detection, undervoltage detection, overtemperature detection, stall detection, a 5-bit ADC, and a switch input that can be used for either user jog control or as a hard stop function. The L6470 is controlled over an SPI link. It has an on-board 16MHz oscillator which allows it to autonomously execute movement commands. The logic supply voltage supports both 3.3V and 5V I/O levels.