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Unread 10-05-2010, 13:45
Peter Johnson Peter Johnson is offline
WPILib Developer
FRC #0294 (Beach Cities Robotics)
Team Role: Mentor
 
Join Date: Jan 2010
Rookie Year: 2008
Location: Redondo Beach, CA
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Re: Using a star configuation for Jaguars on CAN

It should be possible, but part of what makes CAN better than PWM is the fact you can daisy chain, which simplifies wiring. I think really what is needed is a more robust connector on the Jaguars. Cars use daisy chain CAN, but don't have comm issues because they don't use RJ-11 style connectors. DB-9 would be very robust but is overkill on size/weight.

I'm not sure whether it's simply an issue with the RJ-11 connectors on the Jaguars themselves or the fact we're making our own cables, but few people seem to have an issue with the modular jack RJ-45 connectors on the cRIO and radio, as long as they're using premade cables. Maybe a good RJ-45 connector on the Jaguar instead of the RJ-11?
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Author of cscore - WPILib CameraServer for 2017+
Author of ntcore - WPILib NetworkTables for 2016+
Creator of RobotPy - Python for FRC

2010 FRC World Champions (294, 67, 177)
2007 FTC World Champions (30, 74, 23)
2001 FRC National Champions (71, 294, 125, 365, 279)