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Unread 14-01-2016, 15:40
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Re: JAVA RobotDrive Motors Signal Out of Sync

I've changed it to VictorSP and the error is smaller but it is still there.
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Unread 14-01-2016, 17:06
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Re: JAVA RobotDrive Motors Signal Out of Sync

Watch the LEDs on the motor controllers. Is one motor controller's throttle LEDs activating before the other ones? If so you may need to calibrate all the Victor SPs, or factory-default all the Victor SPs. Either will ensure identical throttle response.

If the observation is just the motor beginning to spin differently, that can happen since no two motors are truly identical (and have identical loads).

Also be sure you are applying the same throttle to all Victor SPs(i.e. make sure there isn't something going on in your math).
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Unread 14-01-2016, 18:27
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Re: JAVA RobotDrive Motors Signal Out of Sync

Our team had a similar problem last season. At first, we though it was an electrical problem and we tried various methods such as calibrating our Talons several times. We finally determined the problem was with the joystick (Logitech X30 Flight Stick) and it was off-center slightly when no one was touching it. This issue made it to look as if some of the speed controllers were lagging. We tried to recalibrate the joystick through Windows but it didn't seem to help. We got another joystick of the same model and seemed to work fine for several months but recently it's giving us the same issue.

I would suggest for you to look to see if all the axis are at the same values in Driver Station. Even a minor difference will produce drastic incorrect movement. If the values aren't equal, try calibrating the joystick (through Devices and Printers in Windows) or you could try completely opening the joystick and centering it again. Another alternative would be to try QDriverStation which allows using the keyboard as input. If you absolutely have to get another joystick, I'd recommend going for a 360 controller or going for a higher-priced joystick.
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