Overview
The piezo can be connected to digital outputs, and will emit a tone when the output is high. Alternatively it can be connected to an analog pulse-width modulation output to generate various tones and effects.
Grove - Buzzer is a simple yet enjoyable twig to use. It can output noise at a volume over 85 dB and is integrated with Grove interface, which makes it easy to connect and experiment by just plug & play. It is a perfect add-on for all kinds of Arduino projects and human-machine interfaces.
Get Inspired
This is a universally usable game controller that can emulate seven different key inputs.
In this video Massimo explains the Arduino Leonardo, talking about its differences with Arduino UNO and playing around with its mouse & keyboard features. If you want to have a closer look to the latest arrival in the Arduino Family click here, if you want to follow Massimo's project click here. Arduino Leonardo comes in two different flavours: with headers and without headers.