Description: SIMPLE, EDUCATIONAL, FUN PROJECT: BLE wireless control App smartphone.This intelligent, new technology various projects such as line tracking, object motion following, obstacle avoidance and gravity sensing control. PROGRAMMABLE STARTER KIT FOR KIDS, TEENS, ADULTS AND PROFESSIONALS: The Robot Car Kit is fully compatible with the uno. FEATURE: The main control board adopts CH340 development board.The motor drive module uses a typical L298N module to drive the DC motor.The ultrasonic sensor module adopts the module.The infrared signal detection module uses four pairs of infrared light to detect the black line to realize the tracking function. GREAT FOR ANY SKILL LEVEL: whether you’re a pro, enthusiast, or a beginner, assembling your new robotic car kit will help you learn to create circuits, program sensors and actuators, learn about the Internet of Things and get hands on programming, coding, electronics and robotics experience. GROWS WITH YOUR KIDS: Robot Car Kit for is a perfect gift for your kids who are interested in programming, robotics, electronics, or mechanical design as it can improve logical thinking, mechanical, and electrical abilities of your kids and let your kids learn how to build and program fully functional robots. Specification: Material: Plastic and Metal  Size Chart: Package Size: 27.5x17x5cm/10.83x6.69x5inch Package Includes: 1 Box Robot Car Starter Kit Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!