Arduino co-founders welcomed the crowd at MIT (from left) Massimo Banzi, David Mellis, Tom Igoe, and David Cuartielles.

The Media Lab at MIT in Cambridge, Massachusetts provided a bright, stark-white-and-glass frame for a US-based celebration that featured four of the five Arduino founders. David Mellis, one of the co-founders, is a graduate student at the Media Lab. He was the in-house connection. (No surprise that the fifth co-founder, Gianluca Martino, was not present.) Check out the gallery below to see some of the fun Arduino projects featured at the event!