Great evening yesterday helping Garston Park Beavers learn morse code toward their communication badge. We started off demo'ing a simple Arduino AM radio transmitter which broadcast morse bursts at 1237KHz which we picked up on a cardboard FM radio.
We used some code from this forum post by AnyMouse and incorporated a morse translator over Serial from here.
You can get the code and resources we used on github
/* Code Compiled from a trawl of forums like http://forum.arduino.cc/index.php/topic,36729.0.html http://forum.arduino.cc/index.php?topic=8456.0 uses the PORTB variable to create a frequency of up to 4MHz listenable on analogue AM/FM radios */
