There may come a time when you need to play a joke on someone, perhaps something harmless that will cause some frustration and laughs over the course of a day. One interesting way of doing this is to use an Arduino Leonardo or compatible board to emulate a USB keyboard and mouse.
Although that has a practical use, you can also create random keyboard and mouse events over a period of time, that could emulate the feeling of the computer doing things for itself and generally malfunctioning. This has been demonstrated by loiphin who uses a Leonardo-compatible board to play the role of a secondary USB keyboard and mouse to annoy an end user. And by covering it in heatshrink as shown below, it will be less-easily found by the target.
Certainly something different, however take care with the possible results of your jokes. The sketch and more information can be found on loiphin's blog. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.
Need a small Arduino-compatible for use with your own projects? Then check out out our LeoStick. It's the Arduino Leonardo-compatible board that's cheaper and smaller than the original:
Apart from being one of the smallest Arduino-compatibles on the market with USB, it also has an onboard RGB LED and piezo which can be used a knock sensor and various tune and sound effects. Plus you can add extra circuitry with the matching protostick! For more information and to order, click here.