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Unread 23-01-2011, 09:25
Radical Pi Radical Pi is offline
Putting the Jumper in the Bumper
AKA: Ian Thompson
FRC #0639 (Code Red Robotics)
Team Role: Programmer
 
Join Date: Jan 2010
Rookie Year: 2010
Location: New York
Posts: 655
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Re: Jaguars intermittently disconnecting

I do have wires running a little close to a pair of motors, but the wires don't seem to be the problem since I still see the problem even if those motors aren't running. Also jaguars downstream of the fault don't always have the problem too and if I run the motors via BDC-COMM it seems to work fine.

This problem only appears to be happening under continuous messages

I haven't tried changing the rate of the main teleop loop, but I did see a difference when I lowered the code down to 2 jaguars instead of the 4 drive. Though that may have been because there were fewer active jaguars to see a problem on (I think the jags were still failing around the same rate)

One thing that may be of importance is that the heartbeat coming from the cRIO has never seemed to work on our network. When I run via BDC-COMM all of the jags turn solid, but when running through the cRIO the jags are only solid when they are receiving set commands from my code. (mainly a problem in autonomous, forced us to use a state machine last year)
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