DIY Robot Smart Car Chassis Kit for Arduino Drive Controller Board Stepper Motor Speed Encoder, 4 Wheel and Battery Box

Intelligent Tracing Robot car chassis, high degree of freedom, perfect for DIY subject, science education, development of hobbies and interest, educational toys for kids.Mechanical structure is simple, 4 DC gear motors, flexible turning, eco-friendly chassis is stability and very easy to expand.No add-ins is very convenient, the entire system highly integrated. Can be used to measure distance and speed.Educational kit for beginners(kids) to get hands-on experience about Robotics & Can extend electronics system like for Raspberry Pi or Arduino etc. realizing functions of tracing, obstacle avoidance, distance testing, speed testing, wireless remote control.Size: 25 x 14cm (LxW). Wheel size: 6 x 2.7cm (Dia.xH). Motor power supply is 3V ~ 6V. All the parameter above is tested without load.Colour: as shownMaterial: PlasticPackage Contents:2 x car chassis4 x gear motor (1:48)4 x car tires4 x speed encoder8 x fasteners1 x battery box (without batteries)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.