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Unread 10-13-2018, 03:11 AM
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morops morops is offline
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AKA: Matt Moropoulos
FRC #1747 (Harrison Boiler Robotics)
Team Role: Mentor
 
Join Date: Mar 2017
Rookie Year: 2012
Location: West Lafayette, IN
Posts: 9
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Re: Huge voltage drops and hot battery wires

Use a multimeter to confirm that you aren't electrically connected to your chassis somewhere (measure resistance at multiple points, it should always be higher than 3kΩ). I have seen this happen with motors and with the compressor, although usually it just means that the chassis is grounded and won't necessarily do anything unless an actual short develops. But if your chassis got grounded through wear and tear or damage, and later a short developed through that path, you could be shorting the battery and never seeing any sign of it in software or even the main breaker. This is why we have R48.

It might help you to run through the electrical inspection checklist and confirm that the robot passes before looking for more interesting theories.
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Last edited by morops : 10-13-2018 at 03:15 AM.
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