This tutorial provides step-by-step instructions to build BALANC3R, a self-balancing LEGO MINDSTORMS EV3 robot. Requirements 1x LEGO MINDSTORMS EV3 #31313 Home Edition. (If you have the LEGO MINDSTORMS EV3 Education Core set #45544, you can build Gyro Boy instead.) 1x Gyroscopic Sensor. Use one of the following sensors: EV3 Gyro by LEGO (pictured below) NXT …