Robot randomly stoped working

Warning  44002  Ping Results: link-bad, DS radio(.4)-bad, robot radio(.1)-bad, roboRIO(.2)-bad, FMS-bad FRC: Driver Station ping status has changed.

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restart it (driver station + robot)

Restarting is good advice, but this message indicates that the Driver Station can contact the robot radio but not the roboRIO. This is likely to be caused either by the roboRIO being down, or there being a problem in the network wiring between the radio and the roboRIO.

Suggested steps:

  • Check status lights on roboRIO
  • Review network wiring. The roboRIO should be connected directly or indirectly to the left port.
  • Try connecting using USB

Agree with @bovlb, if it fails with USB connection try re-deploying code, and make sure firmare and wpilib versions match.

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