Wednesday, 20 July 2011

A very simple proximity detector



A very simple proximity detector
Parts

The parts you'll need are:
1) the Sharp IS471
2) a 940nm IR emitter
3) Something to mount the above two items on.
4) 9 volt batter and battery clip
5) Soldering iron & solder, diagonal cutters (if not going the breadboard route).


Assemble it



Mysterious sounds!

control external relay 

Controlling a relay

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