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Topic: Distance between Arduino and PIR sensor (Read 281 times) previous topic - next topic


Hello, I built an  home alarm  and it works OK in the protoboard and mounted on a  work table. Now to put it operational the PIR sensor along with an on / off switch is at the entrance of the house and about 15 meters, on the second floor, I plan to put the arduino. Is there any limitation with the distance ??


In my home alarm distance = 3 m
I don't think it's a problem (until first lightning)


assuming the PIR is a digital HI/LO, and it needs some power, I think the only limit is on the resistance introduced by the cabling. 15M should not be an issue.

Make sure you use pullup/down for the PIR connection.
Just because nobody understands you doesn't mean you're an artist.

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