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Unread 04-04-2012, 01:35
BHOP BHOP is offline
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FRC #0399 (Eagle Robotics)
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Re: paper: How to Get Multiple Cameras on Robot

We had a slight problem with this at the Colorado regional. The tutorial was excellent and we got the second camera up in like you said 30 mins.

BUT...

We could not get our ping times on the field low enough to support both cameras together. At the worst we saw pings of 160ms, and at best we saw 30-40ms. The threshold value to be "satisfactory" is 20ms, told to us by the FIRST field staff is where you will not have comm issues. When we operated with one camera we saw 6-8ms with the old axis and 10-20ms with the new axis camera. Together they were 30-40 so that was a no go.

Anyone got any ideas on how to get ping times down with two cameras? we were at the lowest resolution 7fps on both and 75 compression. I couldn't think of anything else. We also found that switching cables and locations helped significantly but not good enough...

we just guessed the field network cannot handle all the video stream we want to put through...
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