[Tom Bottiglieri]

So I tested all of the power out tonight. Everything was wired correctly. I ran the diagnostic window and got a red light for "FPGA and COMM OK". Motors still didn't work.

We did some digging to find that the screw holding the anderson connector to the robot could sometimes cause a short between the power lines and the frame (when we wiggled the wires). Not sure how this is possible, but it happened. The cRIO was mounted to a bracket that was dangerously close to a frame member. There may have enough shock to cause both to short at the same time, but this seems highly unlikely. Beyond that all electrical components are isolated.

So I ask someone with a bit more knowledge of the guts of the DSC/DIO modules/FPGA - Is there any way the situation explained above could fry only the PWM driving circuitry on the DSC? I assumed the PWM signal came directly from the FPGA. Not sure if there is any amplification on board the DSC that could have gotten whacked out.

Thanks in advance.