Raspberry Pi As A Radio Transmitter

First thing you have to do is attach a jumper wire to GPIO 4. That's it for the hardware part.

The Software

The Code that does the job is called Pifm by icrobotics.co.uk .

1. wget www.icrobotics.co.uk/wiki/images/c/c3/Pifm.tar.gz  
2. tar -xvf Pifm.tar.gz  

Start Broadcasting

1. sudo ./pifm sound.wav 100.5  

- sound.wav - the audio file which you would like to broadcast. only .wav will work.
- 100.5 - the FM frequency. usually between 87.5 and 108.0 MHz.