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Unread 15-12-2014, 11:30
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marshall marshall is offline
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FRC #0900 (The Zebracorns)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2003
Location: North Carolina
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Re: 7mb/s, Will it be an Issue?

I am writing this on behalf of the folks at Team 900, though they should feel free to chime in. We have experienced issues with the Axis cameras and streaming back to the driver station even when settings were lowered and compression was turned on.

From our observations, there is a fair amount of inconsistency among regional events with how the wifi is configured (limits in place, bonding, etc).

Our 'expert' (and I use the term loosely) advice is to limit your streaming to an absolute minimum and to instead grab single frames where appropriate. We did this this past year and it worked great. No bandwidth issues.

If you are using an on-board system (Jetson/Raspberry Pi/BeagleBoard/Etc) then you are probably fine but keep in mind that it is possible to overwhelm the FMS traffic to the RoboRIO by sending too much crap to it over the on-board system. Again, keep your transmission of data to a minimum. IE, don't stream footage from the RoboRIO to the Raspberry Pi just to process it, keep your camera plugged into the Pi and process it locally then send the data you need back to the RoboRIO.

Design for minimum bandwidth and you don't have to worry about these limits.