SainSmart InstaBots 2-Wheels Self-Balancing Upright Rover Car V3 for Arduino with Step-by-step Instructions The new V3 kit with instruction manual was an improvement from the earlier V3 kit that we used. Balance, move and run with two wheels. Controlled & moved by remote controller. One joystick is used to control the robot, the other one is customized The kit works well for the price point.Make it simple, make it complex, make it yours.