Hello everyone. Excuse my english. I need some help. I want to count an optocuplor in a period of time. I have this one: ebay.com/itm/271056595842?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 I connected it on an analog pin and send result on serial.Into photocelule i roate an object wit…

Help for count an optocuplor on arduino

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