Mel i emailed you a curcuit for one.
Mark R. I've done exactly that. I have four photo-cells mounted inconspicuously on the side of a hill looking at the room lights. I added a potentiometer to each of the four circuits so I can adjust what level of light each will turn on. Each one controls a relay through which the actual power to my lighting feeds through. By adjusting them each to a different light level, everything doesn't all snap on at once. First, a few random buildings will light up, then a few more buildings, then the street lights and finally, whatever is left as the lights dim down .... which, by the way, I have controlled using an old motor driven theater variac. Mark.
I've done exactly that. I have four photo-cells mounted inconspicuously on the side of a hill looking at the room lights. I added a potentiometer to each of the four circuits so I can adjust what level of light each will turn on. Each one controls a relay through which the actual power to my lighting feeds through. By adjusting them each to a different light level, everything doesn't all snap on at once.
First, a few random buildings will light up, then a few more buildings, then the street lights and finally, whatever is left as the lights dim down .... which, by the way, I have controlled using an old motor driven theater variac.
Mark.
¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ
I run a separate power bus just for streetlights, with a toggle switch to control it.
It takes an iron man to play with a toy iron horse.