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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