There is a dedicated header for this on Rev 2. its called P6 short the pins and the cpu gets a reset, it should trigger the normal shut-down procedure of raspbian.

I dont know why that bloke in karsten's link didn't use it since he has the parts he would need for it and a compatible board.
The p6 header can also trigger boot for your R-pi.

link to a guide

mobeyduck said

There is a dedicated header for this on Rev 2. its called P6 short the pins and the cpu gets a reset, it should trigger the normal shut-down procedure of raspbian.
I dont know why that bloke in karsten's link didn't use it since he has the parts he would need for it and a compatible board.
The p6 header can also trigger boot for your R-pi.
link to a guide

Ok, that's pretty cool. I haven't needed to reset my RaspiFy since I got it set up more than a month ago. It just works day in and out

What I'd be interested in doing is having a push button to turn it on/off like a regular appliance. Turn it on it boots up. Tun it off it does a shutdown sequence and powers down. I imagine guys using a Pi as an automobile computer are doing something like this with the ignition switch.