The newly released Arduino Leonardo has a few very interesting features, most notably the ability to act as a USB keyboard and mouse thanks to the new ATmega 32U4 microcontroller.

A standard Bluetooth module has to have HID firmware installed. [Dastardly] makes a homemade daughterboard–er, shield–to connect it to the Arduino.

Once you know how to use Arduino boards, you can make custom shortcut keys for your computer, change your thermostat, or even control a walking robot. But to do that, you need to start simple, and ...

So the first and most essential difference is that in addition to the normal shield headers on an Arduino, there is a header that Linear Tech has used for years to drive their demo boards. This ...