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Originally Posted by afclsn
...the first 4 PWM ports in our sidecar don't respond correctly. Ports 1 and 2 output "forward" to out motor controllers while ports 3 and 4 output "reverse" at all times.
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I am unable to imagine a failure that can cause this symptom. I suspect something else is going on. My first guess is that your motor controllers are miswired with the motor terminals connected to power and the power terminals connected to the motor.
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Ports 5 through 10 work just fine. We've tried two different sidecars, several different serial cables, and two different cRIOs with the exact same results. The battery voltage was near full when we tested it as well. Help would be greatly appreciated!
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What do you mean by "serial cables"?