2WD Tracker Car Patrol Car Kit Parts DIY Mini Robot Car Electronic Parts Kit For UNO Features: Cool to watch a robot car moving around? Simple mechanical structure, easy to assemble This car is equipped with a tachometer encoder Includes a battery compartment with switch for convenient power supply to the entire system Capable of starting and stopping seamlessly Highly integrated system without additional components Can measure distance and speed Note: Motor power supply is 3V~6V. All parameters above are tested without load Specification: Packing list 1*Car chassis 2*Wheels 1*DC gear motor 48:1 (other options: 120:1) 2*20 rows of code discs 4*Fasteners (high-density black acrylic) 1*Caster 1*Four Battery Boxes 1*Quality Rocker Switch 1*Assembly drawing Several nuts 1*V5 Shield 1*UNO R3 1*SG90 1*FPV 1*L298N Package includes: 1 Set*2WD DIY kit Note: Only includes the products listed above Specifications are manually tested and for reference only Please allow 0-1cm error due to manual measurement Make sure you are aware before purchasing Due to differences in monitors, pictures may not accurately reflect the actual color of the item. Thank you!