ATX Raspi is a smart power source for Raspberry Pi

http://hackadaycom.files.wordpress.c...0&h=250&crop=1One aspect of the Raspberry Pi that has always challenged us is the power supply. It was a great idea to power the board from a standard micro-USB port because economy of scale makes phone chargers (even in the 1A range necessary for stable operation of the RPi) cheap and easy to acquire. The thing we miss is the ability to power the device on and off using the built-in hardware.

http://hackaday.com/2013/05/19/atx-r...-raspberry-pi/