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Re: Robot Power Issues
A few other things to check:
- Make sure nothing inadvertently shorted to your robot frame. You said this started happening after a hard hit... it's possible that hit knocked something loose and short to the frame. After that, all it takes is one loose thing to cause a second short to the frame and momentarily cause a huge power drop.
- Check your main circuit breaker. There was a bad batch of them last year, and some may still be floating around. Turn on the robot and, while watching the LED's on the power distribution board, tap the red button on top of the main breaker. Not hard enough to turn it off, but don't go very soft either. If the lights on the PDB flicker, you probably have a bad main breaker and should try replacing it.
- Finally, try driving it around and recreating the issue during practice. Have someone watch the battery voltage readout on the driver station to see if it suddenly drops while performing any specific maneuvers. As Al has already said... issues in the drive train (loose chains, problems with the mecanum rollers, etc) can cause momentary binding that leads to a huge amount of stall current going to the CIM's, momentarily dropping your voltage below what's needed to keep the cRio powered.
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