The motor control board consists of 2 H-bridges (IC L293D). Board can be powered from outside or from the MicroHOPE socket. An INT/EXT jumper is provided to select the power option. The voltage level at the for outputs of L293 is decided by the four LSBs of the port on which it is connected. The outputs (A,B,C & D) can be used for controlling 2 DC motors or one stepper motor.