: Small connectors used to snap beams together securely.
The most critical "proper piece" is the programmable microcomputer that controls your robot's actions. EV3 Intelligent Brick Go to product viewer dialog for this item. Building Robots With Lego Mindstorms: The Ultim...
: Features an ARM9 processor, input ports (1-4) for sensors, and output ports (A-D) for motors. NXT Intelligent Brick Go to product viewer dialog for this item. : Small connectors used to snap beams together securely
: Various "proper pieces" like touch, light, ultrasonic (for distance), and gyro sensors allow your robot to interact with its environment. input ports (1-4) for sensors