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garage door sensor circuit
wp100,
looks like a simple enough design, i'll have a close look at it tonight.
couple of questions.
how do i calculate the required ohm-age of the resistors, based on a known voltage? what's the forumla? since I don't know for sure what the specs on the power...
door sensor circuit
I'm looking to design a circuit that will tell me, via two (separate red and green, not bi-color) LED. I had some surplus magnetic sensor switches (two wire, open or closed based on magnet proximity to contact) so i had them mounted to the garage and floor.
so here's what...
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