Ball and Beam Project

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hi,
i have old ball , beam system should run 1 of classes in less 2 weeks.
it has old dc motor , potentiometer want control direction of beam via arduino uno.
i have no clue how make dc motor feedback potenciometer , change speed , direction in order reach setpoint want through pid controlling.
i'll glad if me
thanks lot

analogread usual method of reading pot value.
you can use map .


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