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Unread 11-03-2009, 07:41
ssi ssi is offline
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AKA: David Spangler
FTC #2843 (Under the Son)
Team Role: Mentor
 
Join Date: Mar 2009
Rookie Year: 2008
Location: Hollywood, MD
Posts: 34
ssi will become famous soon enough
Re: [FTC]: Playing Forensic Roboticist.

Phil,

I can't help you with checking available memory while running, but we have seen file errors before. However, all of these could be traced back to coding errors. At the moment, I cannot remember exactly the problem, but I thought it had to do with attempting to talk to a motor or servo controller on the wrong port (or wrong place in the daisy chain). At the time we were probably using NXT-G (but could have been LabView, we went through all 3 packages before settling on RobotC). Is it possible that you have a coding problem in a section of code that is only run on rare occasions possibly due to the position of the robot at the end of autonomous/beginning of Teleop.

As for the frustration of the robot not responing to controls, our team managed to experience that twice at the MD competition. The first time it was caused by a team member forgetting to plug in the external battery in when we swapped for a fresh one. Fortunately our team mate won that qualifying match for us. The second time was in the semi-finals when the RobotC software was not detecting the external battery and refused to run. After the match, we unplugged and re-plugged the battery and it registered normal!?!

We competed 1 week later at the PA tournament and had no control or connection problems with our robot (we also reset bluetooth between all matches). However in our teams second semi-final match at least 3 robots locked up (though one may have been broken) just as our team mate was about to score 2 racks. This would almost have to been an FMS or USB problem.

David

PS. Good luck at Atlanta
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