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[Others] Anyone can identify the white component? I believe it is an optoisolator but I'm not sure.

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[Others] Relay Output Problem

I'm doing a Sanitiser dispenser with an Ultrasonic Sensor. For every alternate sensing of the hand, I'm getting a brief disturbance signal from the relay. It goes on for a few milliseconds and...
  • answered Oct 15,2020
    by Paul H
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