What is Arduino? It’s a THE tool to use if you want to make your own flame-throwing pony-robot, Gmail LED notifier or something like this spider robot:
Back in 2005, Massimo Banzi was a teacher at a school for interaction design in a small beautiful town in Italy called Ivrea. His students needed a way to control things automatically. Like turning on and off lights depending on the amount of light in a room. Or to play a sound when someone stepped on a certain tile.