Smart Power Supply for the RPi

Interesting hack that basically allows the RPi to get a signal that its time to power down (and then power down) just like a real computer when you hit the power button.  The board inbetween is called the ATXRaspi.  Down side is the board costs $16 not including shipping.

http://hackaday.com/2013/05/19/atx-raspi-is-a-smart-power-source-for-raspberry-pi/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29