ITEM NAME:Smart Car Tracking Robot Car Chassis DIY Kit Reduction Motor For Ardui New x Descriptio n Description: Installation Instructions: In Line With The Principle From Simple To Complex, We First To Make A Digital Circuit To Control The Intelligent Tracking Car, In The Assembly Process, We Can Not Only Familiar With The Mechanical Principle But Also Gradually Learn: Photoelectric Sensors, Voltage Comparator, Motor Drive Circuit And Other Relevant Electronic Knowledge. Specifications: Name:Patrol Car Parts Package Included: Patrol Car Parts*1 Note: On The Back Of The Assembly Instructions Is The Simple Track For Tracking Cars. Customers Can Also Paste 1.5 ~ 2.0 Cm Black Electrical Tape Directly On The Ground To Design A Complicated Track. We offer you what you need! Smart Car Tracking Robot Car Chassis DIY Kit Reduction Motor For Arduino.We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. Patrol Car Parts 1. We'd like to settle any problem in a friendly manner.