Tavel

You get the idea, haha.

here's a photo of the bits inside, everything is covered with sawdust. lol.

Lucy

LOL, Very Clever.

Shawnie

oh lordy..im lost just looking at the pics! the vid put me over the edge LOL

Tavel

It switches even faster if you put the leads in your mouth, you should've seen us when we figured that out, lol!

And unfortunately I'm not THAT clever. I lifted the design from this guy, but I made a few changes.

Mike19

So dose that light work off heat? very clever.

Tavel

not really. the system senses a change in temperature, and then switches a relay (the blue things in the photo) which runs the lights. there's more to it, but there's no need to get into the nitty gritty becase that guy's website has all that.

Relays are cool because they are basically electrical light switches. you can put whatever you want on the switching side because it's not connected to the control circuit. So you could, in a way, make a button battery power a vacuum cleaner...or at least turn it on and off.