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Short range motion sensor


#1

I’m looking for a very short range (one foot or less) sensor to trigger some patio lights with a wave of a hand. Is there anything out there?

thanks
Mike


#2

Search for “Optical Proximity Sensor”.

I once got a whole bunch for free from a factory that replaced theirs.

http://www.google.co.za/search?q=optical+proximity+sensor&hl=en&safe=active&prmd=imvns&source=lnms&tbm=isch&ei=R12FT-uKMs6IhQf-ut3DCA&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CEwQ_AUoAQ&biw=1522&bih=801

If you want to bring distance into the equation, look at these:

http://parts.digikey.com/1/parts-kws/distance-sensor

Welcome to the community!


#3

Thanks realiser!