Adafruit tb6612 1 2a dc stepper solenoid motor driver breakout board adafruit 2448 p the adafruit solenoid stepper motor driver breakout board is a versatile high current driver able to control 2 x bidirectional dc motors 1 x stepper motor or 2 x solenoids it uses a tb6612 dual h bridge chip that can supply 1 2a which isn t that high in real terms but it s a huge current compared to the recommended 20ma output from an arduino gpio pin for example the chip has built in flyback diode