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Unread 08-03-2010, 12:21
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Mark McLeod Mark McLeod is offline
Just Itinerant
AKA: Hey dad...Father...MARK
FRC #0358 (Robotic Eagles)
Team Role: Engineer
 
Join Date: Mar 2003
Rookie Year: 2002
Location: Hauppauge, Long Island, NY
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Re: Powering your USB Hub at Competition

In these situations on the field that I witnessed, Comms were never actually lost, it just seemed like they were. All statuses were good, but the robot didn't respond whatsoever to any driver controls. Essentially, the Classmate wasn't hearing from the joysticks connected through the hub.

At NJ if I was consulted or found out about it, I had teams plug the PSOC directly into the Classmate and just use the hub for low power devices. A team that didn't use the PSOC, but did have a higher power consumption game controller also had to move that device to a direct Classmate connection.

Using both the red and black USB plugs did not always solve the problem for some, including one of the finalists. They finally went with direct connections for both joysticks. They would have benefitted from just a better redistribution of devices, but under the gun during a match the goal is to just get it working.
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Last edited by Mark McLeod : 08-03-2010 at 16:28.