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Unread 21-01-2013, 12:11
Andy A. Andy A. is offline
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Re: Motors move by themselves

Could you just confirm that you are seeing this behavior only with Victor speed controllers? I've noticed sometimes Victor is used as a catchall for the various speed controllers, and like to check.

The 884 has, the last time I looked it up, something like a 4% built in deadband around neutral. Any command, intentional or otherwise, in this range won't result in any output current being sent to the motors. While not impossible, it'd take some pretty serious jitter to get out of that deadband.

I do not know what, if any, deadband the Jaguars and Talons have.

My guess is that this is code related. The next leading alternative is something centered around the digital sidecar or ribbon cable connecting it to the cRio module. Swap the sidecar out if you have a spare and ensure you don't have any other electrical wire or device near the ribbon cable, and that it is properly assembled and connected.