2WD Avoidance Tracking Smart Robot Chassis Car Kit With Speed Encoder Ultrasonic For Arduino UNO R3

Feature: With simple mechanical structure is very easy to install. Comes with 20 wire tachometer yards, you can speed, distance, composed of closed-loop systems. Here is the manual for your reference (only Chinese) Package includes: 1 x Car chassis 2 x Car Wheels 2 x DC Gear Motor 2 x 20 line code disk 4 x Fasteners (high intensity black acrylic) 1 x Caster 1 x Four battery box 1 x Quality Rocker Switch 1 x V5 shield 1 x UNO R3 1 x SG90 1 x FPV 1 x L298N Several screw nut