Encontrei este texto que explica um pouco daquilo que ando a fazer neste espaço e a partilhar:

“(…)The one thing that the NXT can do that the Arduino can’t is to integrate with a Lego structure easily. While the Mindstorms brick with the processor has technic holes on the side, the Arduino hardware has no such convenience. The Arduino processor most either go in a Lego brick enclosure or use an adhesive (the bane of most Lego builders) to keep it in place. When planning a Lego sculpture that integrates Arduino, it’s important to keep processor placement in mind, including any shields, wiring and other add-ons used by the project. (…)”

fonte: http://www.justjon.net/lego/lego-and-the-arduino-microcontroller/