Motor Driver Module

The motor controller came in kit form from Active Robots and had to be soldered together. It is based around the 298 controller chip. The completed module can be used with a supply voltage of up to 26volts, and includes a voltage regulator to provide a regulated 5volt output for any control circuitry. I am using this 5volt output to feed the Arduino temporarily because I have misplaced one of the battery pack flying leads.


  • Motor Controller

    Components included in the kit.

  • Motor Controller

    Printed circuit board.

  • Motor Controller

    Fully assembled motor controller.

  • Motor Controller

    Fully assembled motor controller.

Drive Motor Logic Tables

Right Motor
Enable L1 L2 Result
L L L OFF
L L H OFF
L H L OFF
L H H OFF
H L L BREAK
H L H FORWARD
H H L BACKWARD
H H H BREAK
PWM L L PULSE-BREAK
PWM L H FORWARD-SPEED
PWM H L BACKWARD-SPEED
PWM H H PULSE-BREAK
Left Motor
Enable L3 L4 Result
L L L OFF
L L H OFF
L H L OFF
L H H OFF
H L L BREAK
H L H FORWARD
H H L BACKWARD
H H H BREAK
PWM L L PULSE-BREAK
PWM L H FORWARD-SPEED
PWM H L BACKWARD-SPEED
PWM H H PULSE-BREAK
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