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Motor feedback | PCB Design

Motor feedback
Version 1 - Last update: Oct 5, 2015

Feedback from motor using optocoupler.

Feedback from the motor to the arduino. Tried comparing two PWM signals: Wanted speed signal (PWM) MINUS the real reading (frequency to PWM) EQUALS PWM signal for the motor. But, finally I've decided to use LM2917 to convert FTV and let the arduino calculate the speed.

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