I'm assuming these LED chains are 120 volt AC, or whatever the local=20 power is. Google: " xmas light control". This is typically handled with powerline modems,=20 off the shelf like X-10, and it's newer version INSTEON. Check out=20 smarthome.com. These should be a starting point. On 9/25/2010 1:52 PM, J. Bakshi wrote: > Dear list, > > I have seen lots of LED projects where we can see even 100 LEDs. I am sea= rching something different. I like to decorate my home as well as garden wi= th LEDs :-) I guess I need not lees than 4000 LEDs to do this. I can buy LE= D chains from local market, but this does not give any animation or blinkin= g effect. I wonder if there is any such project which can drive these large= no. of LEDs and also provide a mechanism to design lighting effects favora= bly through a linux box. any such thing in this planet ? > > Thanks > =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .