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I'm learning how to use relays. I understand their basic function and have managed to build a few projects. But I came across an example that uses a relay or MOSFET to Auto Shutdown Arduino and I'm not sure if I've understood the circuit correctly. When I built this project, the Arduino powers off as soon as I release the button! THIS IS HOW I SEE IT: The relay (which is using NO) is initially LOW, meaning COM and NO are not connected and therefore the Vcc into Arduino's 5V pin is not going to
Arduino Auto Shutdown (using a MOSFET)
Why does my electric circuit to control a 12V circuit (solenoid) with a 5V circuit (GPIO, Arduino) using an optocopler and a Mosfet not work? - Quora
Arduino Auto Shutdown (using a MOSFET)
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Why does my electric circuit to control a 12V circuit (solenoid) with a 5V circuit (GPIO, Arduino) using an optocopler and a Mosfet not work? - Quora
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Arduino Auto Shutdown (using a MOSFET)
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