and an LED. This is modeled after the Lilypad hardware, and fits nicely on top of the plastic case of the microcontroller, allowing it to be used in a breadboard or DIP socket. You can see a walk ...

The circuit is so simple ... or you can just lift up the connection on the breadboard and repurpose the LED. Be aware though: The mbed code assumes you have an LED connected to pin 14 and will ...