I built This robotic snake with THREE kits of #LEGO #Mindstorms Robot Inventor. The wheels just run free and the robot advances by curving it's body through a sine wave with an offset for each segment. An ultrasonic distance sensor in the head watches for obstacles. It's amazing how this type of robot can navigate the jungle of table and chair legs without getting stuck. Programmed in #python to ensure all hubs and segments move in sync and keep communicating over bluetooth. It's a Python Python