I want to use an 555 timer and one magnet switch on my fuse cabinet door connected to one 9V battery. I want the led to fade on after door is opened and stay on for 20 seconds before the the led fades off and stays off, until the door closes and opens again. Is that possible with an 555 timer, 9V …

Turing on led and 20 second lader stay off

missdrew September 25, 2021, 11:43am 2

I can't see where an Arduino would fit in this project. You could use an ATTiny85! this would at least fit with this forum.

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