Build a 1 to 250Mhz FM TX with nothing else than a RaspberryPi

Some smart people managed to write software that turns a RaspberryPi into an FM transmittor between 1 and 250 MHz ...
All you need to do is connect a wire to a GPIO pin as an antenna !

Isn't that the coolest project for a RaspberryPi so far ?

Check it out:

Of course if you really want to get on-air with this no doubt some filtering at the "output" may be required... :-)