Thread: cRio communication problems
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Unread 17-02-2014, 14:46
Nunners Nunners is offline
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Exclamation cRio communication problems
We have suddenly faced a very weird problem with the programming aspect of our robot. Before I continue, let me state that ALL motor controllers were functioning perfectly as of this morning (~9 AM).

We are still able to communicate with our cRio via ethernet/wireless. We are also able to upload code. However, after our code (which was working perfectly earlier) has been deployed, NONE of our talons receive any input from the sidecar/cRio -- all 9 of them display flashing yellow lights. Spikes are solid yellow.

Any ideas as to how we could troubleshoot this issue? We've reimaged multiple times and even switched out old modules. We are really stuck here.

The only possible cause of this problem that comes to mind is a short or something similar that fried something downstream. A student dragged a PWM cable across the positive and negative ends of a talon while it was powered causing a small spark -- but I highly doubt that would have caused the problems we are currently seeing.