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Unread 22-02-2010, 09:49
Merle Merle is offline
FRC Mentor, FLL Coach
FRC #3146 (GRUNTS)
Team Role: Engineer
 
Join Date: Jan 2003
Rookie Year: 2002
Location: Granby, CT
Posts: 42
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Re: Still having some watchdog issues

I want to point out to teams that are experiencing occasional watchdog timeouts and think it is not a big deal as they only see a short glitch for a fraction of a second, at a competition it becomes a HUGE deal... the field control system will shut your communications down between your operator controls and the robot on just one watchdog error - you will have a dead robot for the rest of the match - we saw this in multiple matches at the Suffield Scrimmage (Suffield HS, CT) where an official FIRST field control was used. I have a suspicion that control can be regained by restarting your dashboard program, but this would take a while and is not a very good option during a match.

We were able to resolve our watchdog errors by removing all excess code (LabView) that we were not using (such as camera, gyro, and solenoids that were programed, but attachments not yet made on our robot) and ran for a few matches without errors.

Greg - thanks for the lead on the virus scanning, I think we had it turned off, but I will look into this. For us it was usually System Watchdog errors, and I've monitored Classmate CPU usage to be 50-80% when errors occurred, and have seen it at 100% (while shutting down LabView when dashboard was running) but did not have errors occur then.

Merle Yoder
GRUNTS Team #3146
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