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).
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
control external relay
