Quote:
Originally Posted by Ether
The white wire is the signal wire, and the black wire is ground. Both are needed.
The red wire is power (not signal). It is needed only when the PWM cable is connected to a low-power servo motor. It is not needed for any of the motor controllers.
The signal (white) wire carries the PWM command on it.
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Yes I worded that very poorly. The red wire is connect to a 5V supply at the Roborio but is not connected to the circuitry of the motor controller.
The white wire supplies the actual signal to the motor controller.