Earing Switch

It's an earing.	Now it's a switch!
D4	D3
Wire cover keeps me from getting zapped when I open and close it

Try two on the switch system for Physical Computing - this is a really simple digital switch - the Arduino chip reads if the system is open or closed (in my case, it's watching for an input on D2, and switches it's outputs between D3 and D4 depending on if it gets a signal or not. I have D3 wired up to a green LED, and D4 wired up to a yellow one.

And the switch controlling it all is...my earring. Yes, the lady in the store was really confused that I kept insisting on one made of wood or plastic, and then holding it up to the light to make sure the metal didn't go all the way through.