Problem with AutoTune

Questions about using encoders with the Roboclaw product line
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Basicmicro Support
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Joined: Thu Feb 26, 2015 9:45 pm
Re: Problem with AutoTune

Post by Basicmicro Support »

1. Make sure the ecncoders are being read properly. Manual turn the motors while the IonMotion app is connected to the board and see if the particular motor encoder values change.
2. Use the PWM settings window to run the motors in the forward direction. The encoder values should increase when moving forward. Note that forward is when you slide the motor slider up.
3. If 1 or 2 has a problem check the encoder signal lines using an oscillascope. We have had problems with motors with the built in hall effect encoders from china. Their designs have a bad snubber circuit that allows large voltage spikes from the motors to get on the 5v and signal lines of the encoders. If this is the case you can get false encoder pulses. It is possible that the encoders could even be damaged by it.

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