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Unread 05-06-2014, 06:55
Greg McKaskle Greg McKaskle is offline
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FRC #2468 (Team NI & Appreciate)
 
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Re: unknown electrical issue

A cRIO crash due to low voltage or otherwise should not brick the cRIO. Every time you open the Anderson switch to "turn off" the robot, you are removing power from the cRIO. It isn't aware you were going to do that, and it runs out of juice and has an abnormal shutdown -- a crash.

When voltage drops below a threshold, the cRIO disables outputs. In its status packet back to the DS, it explains that it cannot run outputs because it is disabled. This is similar to what happens with a watchdog timer. The DS it telling the robot it can be enabled. The robot is saying it chose not to be. I don't believe rebooting the DS has any effect on this. I don't believe it hurts anything, but I don't believe that it fixes issues with a low voltage battery in anyway.

Please post the logs and that will give some data to confirm our speculations. Or it will hopefully point in another direction.

Greg McKaskle