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Robotics sets
Lego initiated a robotics line of toys called 'Mindstorms' in 1998, and has continued to expand and update this range ever since. The roots of the product originate from a programmable brick developed at the MIT Media Lab, and the name is taken from a paper by Seymour Papert, a computer scientist and educator who developed the educational theory of constructionism, and whose research was at times funded by the Lego Group.
The programmable Lego brick which is at the heart of these robotics sets has undergone several updates and redesigned, with the latest being called the 'NXT' brick, being sold under the brand name of Lego Mindstorms NXT 2.0. The set includes sensors that detect touch, light, sound and ultrasonic waves, with several others being sold separately, including an RFID reader.