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Re: Random Signal
First off, are you using PWM?
If so, our team had a similar issue where, when enabled and recieving no signal from the joystick, it will randomly move the motors a little bit. It looks like the robot is twitching. If this is what is happening to you, go into your code and make sure there are no slots on the Digital Sidecar that are not hooked up (e.g. if you are trying to send values to PWM 7, which has nothing plugged into it.) When you get an active pin with no wire, it builds up a small charge on the Digital Sidecar, which then randomly discharges, and is interpreted by the motor controller as a very small signal.
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