| Post 10 made on Wednesday September 15, 2004 at 00:35 |
Ernie Bornn-Gilman Yes, That Ernie! |
Joined:
Posts: | December 2001
30,104 |
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One thing to look for is that the trigger will likely not put out enough current to actually close a relay. If this happens, the relay will not close and if you measure the voltage on the relay, it could be as low as a half volt...which will then spring back up to twelve when you disconnect the relay.
I solved this once by amplifying the current, and that took an irritating amount of time.
The second time, I took the trigger voltage, ran an LED with it, bought a Niles light sensor, put the LED next to the light sensor, wrapped the whole thing with black tape, and I got 12 volts out when the projector was on, 0 volts when the projector was off.
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