EV3D4 bonus model for the 31313 set. Instructions here: https://www.lego.com/cdn/cs/set/assets/blt9d825847cfab5c16/EV3D4.pdf | By Tomafuwi Productions Sdn. Bhd. | Facebook
EV3D4
LEGO Mindstorms - Ev3d4 - YouTube
EV3D4: Robot Maker Studio #2 by MINDSTORMS | 👋 Meet EV3D4, a fan robot that can talk ( 🆒) and go around obstacles, on the second episode of Robot Maker Studio. Warning: