The LEGO® MINDSTORMS® NXT 2.0 set offers hundreds of building elements, programming software, and powerful electronics that you can use to create amazing robots. But where do you begin? This eagerly awaited second edition of the bestselling Unofficial LEGO MINDSTORMS NXT Inventor's Guide is your key to designing, building, and programming robots with the NXT 2.0 set. You'll learn practical building techniques, like how to build sturdy structures and use gears, and gain a solid understanding of the set's NXT-G programming language. A series of projects new to this edition offers step-by-step instructions for building and programming six robots, each of which can be built with just one NXT 2.0 set, including: Inventor-Bot, a fast, simple, modular vehicle with treads Sentry-Bot, a robot guard that shoots balls at intruders Table-Bot, a vehicle that uses its antennae to avoid falling off a tabletop The Jeep, a four-wheeled vehicle that avoids obstacles and follows lines The Lizard, a