On Mon, 18 Feb 2002, Andre Abelian wrote: > Do you want to control each lamp separately or all at once ? All at once. There's low-voltage 2-conductor stranded wire run around the landscaping, and the lights tap into this for their power, all in parallel along the run. > Turning on and off with triac is easy but if you want to dim it > Then you need to detect zero crossing on each phase and call > Delay up to 7.3ms Dimming isn't a reall *requirement*, but of course the more I think about it the more reasons I can think of to include it! 8-) Dale -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.