Longruner Arduino Project Smart Robot Car Kit with Two-Wheel Drives Intelligent Robotics DS Educational Car for Teens and Adults The most economical and fun robot car kit with simple mechanical structure, obstacle avoidance, and tracking function, it is a nice system and very easy to install. 2 in 1: Robot car kit and Starter Kit for Arduino. More than 40 pieces components for welding installation freely; on-board breadboard fixing on the platform, easy to Extend and second development. Infrared obstacle avoidance module and Ultrasonic obstacle avoidance module Infrared tracking module can keep the car away from the barrier. Help you to drive the robot car easily. Detailed tutorial including project introduction and the source code will be provided FOR FREE. Please feel free to contact us to get E-BOOK. We will offer you all professional information and give you one-to-one technical service.