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Amazon.com: LEGO MINDSTORMS EV3 Building Set Includes 3 Interactive Servo Motors, Remote Control, Improved And Redesigned Color Sensor, Redesigned Touch Sensor, Infrared Sensor And 550+ LEGO Technic Elements : Toys & Games
Tutorial: Installing Gyro and Ultrasonic Sensor blocks in EV3 Home Edition – Robotsquare
3.1 Class Discussion - LEGO Robotics
Amazon.com: LEGO® MINDSTORMS® Ultrasonic Sensor (9846) : Toys & Games