Demonstrating an FM transmitter on a Raspbrry Pi, this can be scheduled as an alarm clock to play wav files or triggered by any other type of event.
http://www.nerdyshawn.com/rpi-fm-tran...
How-To Process
http://www.icrobotics.co.uk/wiki/inde...
GPIO Pinout, my case I was using Raspberry Pi board B revision 2 so I connected to pin # 7. http://elinux.org/RPi_Low-level_perip...