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Unread 27-01-2015, 19:56
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Re: Multiple cameras on one Robot

Quote:
Originally Posted by adciv View Post
The router does not limit it. The limitation is performed by the field network hardware. Also, (as of last known event) the field hardware does not differentiate between camera packets and control packets.
The 2013 radio tool enabled QOS on the dlink and set a bandwidth limit of 7mbps. I have not verified whether the 2015 radio tool does the same. However, due to implementation differences, it's unlikely to work exactly the same as the field limit.

Quote:
Originally Posted by compsuppjk View Post
The good news is that this measurement will include all of the traffic (including DS<->RoboRio traffic) to give you a really good estimate. Note that the data stream between the DS and RoboRio that is always active (the protocol itself) has changed, and that total bandwidth consumption is down from about 900 kbps to about 1/10th of that (you can do the measurement yourself with a cRio vs. a RoboRio and the corresponding versions of the DS software.) This effectively gives teams an additional 800 kbps of bandwidth to use for custom applications.
As the packet sizes are now dynamic, I'm not sure you can count on the bandwidth always being around 100 kbps, so be sure to leave margin.