gofar99 Messages: 1942 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, It would seem to need something that detects the opening of the curtains. A photo cell arrangement might work. For a more sophisticated approach a proximity detector or perhaps an infrared beam and photo detector. Some of these things are available in kit form. you can search the web for them. A number use LEDs in place of bulbs and thus no high voltages, just a few batteries.