Salvaging an old motion triggered light
November 22, 2009
The other day I found this in our local garbage dump:
I have been trying to figure out its wiring diagram using a multimeter.
I know that all that is on the left is power control and everything on the right is to with the PIR sensor itself. There are 5 wires connecting the left bit to the right bit, 2 of them connected together so that makes 4.
1 of them will be V+, 1 will be G and I believe one will be to trigger the relay, what the last one would do is anybody’s guess.
I am wondering if I should try to get this circuit working or should I just slvage indidual parts such as the PIR sensor, 2 variable resistors, mini LDR and a bunch of resistors and caps?