Digilympics, a two-week-long event created by hardware hacker Sam Cox, features teams from the U.S., Canada, the UK, and Japan. However, the teams are not made up of your usual athletes; instead, they’re actually teams of Lego minifigures, all of which are trying to sprint along a specially-made running track.
Each Lego minifigure represents one of the participating nations, and to make one move you just have to send a tweet to that athletes’ Twitter account to show your support. An Arduino board is programmed to scan Twitter for any new relevant @-replies that mention the teams. The tweets trigger a signal to spin motors, which move the teams forward down the track.
An infrared beam set across the finish line ready to detects the winner, at which point the game resets and the Lego athletes get ready to run again. A tally is being kept noting how many times each competing nation wins a race, as at the end of the two weeks one nation will be awarded the Digilympics Gold Medal.