Sell Avoidance tracking Smart Robot Car Chassis Kit 2WD best price

New Avoidance tracking Motor Smart Robot Car Chassis Kit Speed Encoder Box 2WD Ultrasonic module kit 1 mechanical structure is simple and very easy to install. 2 car comes with 20 wire tachometer yards, with photoelectric gun shop can be quickly formed a gun systems. You can speed, distance, composed of closed-loop systems. 3 car with four on the 5th battery compartment, convenient to the entire system power supply. At the same time equipped with a switch, easy start-stop system. Without additional very convenient, so that the whole system is highly integrated 4 car shop with L298N driver module, four tracking module, as well as 51 control unit seamless, simple and good-looking components of the system! Shipping list: Car chassis 1 Car Wheels 2 DC Gear Motor 2 48: a deceleration DC motor (otherwise 120: 1 Optional) 20 line gun code disk 2 Fasteners (high intensity black acrylic) 4 Caster 1 Four battery box 1 Quality Rocker Switch 1 Assembly drawing 1 Several screw nut V5 shield 1 UNO R3 1 SG90 1 FPV 1 L298N 1