05-03-2011, 06:55
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Mad Scientist
AKA: Me
 FRC #2040 (DERT) Team Role: Engineer
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Join Date: Apr 2005
Rookie Year: 2003
Location: Peoria, IL
Posts: 1,981
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Re: 2011 BAE Granite State Regional
Quote:
Originally Posted by Andy A.
Just a quick update on GSR field issues:
There have been numerous field issues, including a unclear matter regarding CAN bus robots. Teams using CAN bus have been advised that it can't be assured to work on the field. It doesn't seem to be consistent, and no one can replicate the issue, but 95 spent several matches dead before it was pointed out.
We've rewired to use PWM, as has at least a few other teams. Hopefully the issue is eventually resolved, but at this point we're scared off of canbus (I'm calling it can't bus for now).
I'll be curious to see if this has cropped up at any other regionals, or if it's isolated to this field.
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We had CANbus issues prior to ship and couldn't get it to be stable. We pulled it out and replaced it with PWMs a week before ship and have had no issues since. We run Java and we believe the issues are between Java and Can, and not the hardware.
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"We are not now that strength which in old days moved earth and heaven; that which we are, we are;
One equal temper of heroic hearts, Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield. "- Tennyson, Ulysses
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When you come down to it, FIRST is about people inspiring other people; STEM and the robots are just the subject matter. - RyanCahoon [more] 
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