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Originally Posted by hopkins
we are trying to wire a banner light sensor and we have to use a digital input from a pwm cable.
Which color wire on the pwm is the digital input? white or red? (we know that black is ground)
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If you are using a Banner sensor, you have to connect the brown wire to +12 V (with a 20 A circuit breaker per FIRST rules), the black wire to the RC ground (or, preferably, to the Breaker Panel's ground) and the blue or white wire to a signal pin of one of the RC's digital in.
I can't remember which one, but one of the outputs (blue and white wires) is NO (normally open) and the other is NC (normally closed). It doesn't matter which one you pick, as long as you keep that in mind while programming the robot.
You won't be using the +5V available from the RC, so it is better to insulate the red wire from the PWM cable.