Why connect a diode between the reset pin of Arduino and 555 timer? – arduino.stackexchange.com

Why connect a diode between the reset pin of Arduino and 555 timer? – arduino.stackexchange.com

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I am trying to create a watchdog timer using 555 IC and I am following this. I do not understand why a 1N4148 diode is connected between the reset pin of Arduino and the output of the 555 timer. As ...

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