Lego Mindstorms NXT

Lego Mindstorms NXT is a programmable robotics kit released by Lego in late July 2006. It replaced the first-generation Lego Mindstorms kit, which was called the Robotics Invention System. The base kit ships in two versions: the Retail Version (set #8527) and the Education Base Set (set #9797). It comes with the NXT-G programming software, or optionally LabVIEW for LEGO MINDSTORMS. A variety of unofficial languages exist, such as NXC, NBC, leJOS NXJ, and RobotC. A new version of the set, the new Lego Mindstorms NXT 2.0, was released on August 1, 2009, featuring a color sensor and other upgraded capabilities.

Read more about Lego Mindstorms NXT:  NXT Intelligent Brick, Programming, Sensors