Hello all, As I am a newbie in programming, i need help in solving some issues on my sketch. The application acts as follows: While input pin 2 is HIGH, output pin 12 is HIGH too. when pin 2 goes LOW, a countdown of 30 mins (1800000 millis) starts and when this period expires, pin 12 goes low unt…

Delay controlled relay sketch issues

system May 29, 2018, 6:24pm 7

Do you have a pulldown resistor from pin 2 to GND to make sure the pin does not "float" when the button is not pressed and cause "ghost" HIGHs?

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