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Unread 09-02-2017, 09:32
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Garrin Garrin is offline
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AKA: Ranger
FRC #5720 (Jagobotics)
Team Role: Coach
 
Join Date: Feb 2017
Rookie Year: 2015
Location: Minnesota
Posts: 4
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Re: Motor Speed offset

Quote:
Originally Posted by GeeTwo View Post
OK, there's definitely something fishy on that Talon or something feeding it.

Try swapping the PWM cables between that Talon and the Talon which controls the other motor on the same gearbox. If the problem moves, it's your PWM cable, RIO, or software (in decreasing likelihood). If cable or software, the fix is easy and not too expensive, and hopefully obvious. If the RIO, your best bet for now is to move the control to another DIO port, both in software and hardware.

If the problem stays with the same Talon, try swapping it to another PDP port, and (separately) to another breaker.

Edit: Try swapping the motors on the same gearbox between the talons to make sure you don't have a motor overloading the breaker.

If none of these fix the issue, sounds like a bad Talon. Fixing that is probably beyond online advice. Replace it; if it's new, try to get the replacement from the vendor.
Thanks for the advice. Using your idea we found the electrical gremlin. We had a few bad PMW cables, and one that was crossed in the wrong direction. I appreciate everyone's help in the matter.

Thank you!
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