Easy R3ptar Snake Control EV3 - Apps on Google Play
LEGO Mindstorm EV3 R3PTAR snake line follower - YouTube | Lego, Line
The Ev3 R3PTAR model - Smallrobots.it
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