Learning LEGO Mindstorms EV3: Build and create interactive, sensor-based robots using your LEGO MINDSTORMS EV3 kit by Gary Garber, Paperback | Barnes & Noble®
EV3 Color Sensor- Middle School - Education
HiTechnic NXT Magnetic Sensor – Modern Robotics Inc
Color & Distance Sensor 88007 | Powered UP | Buy online at the Official LEGO® Shop US