Hi guys,
I bought two of these prebuild ir sensors which have a potentiometer for easy range adjustment. I cranked it in each direction just to see how far they go but when I turned them back into normal range they just stayed activated.... Do you guys think I could have killed it by turning it all the way up ?
They pick up ambient IR as well as the reflection of their own IR LED. So you have to either shield it from this (sunlight is a major source, incandescent bulbs as well, other light bulbs much less so) or set the sensitivity to a level that it's not triggered by ambient IR.