Smart car 2WD chassis of this smart car chassis can be combined with Raspberry Pi and various development boards, sensors, to facilitate the electronic aspect of learning. A toy car can do, exercise children, adults, the abilities of students. It can be used with the sensor element to develop some tracking, searchlight, obstacle avoidance, fire, remote control car. Car reserved UNO, MEGA2560,51 MCU control panel, OUR drive module, tracing module, obstacle avoidance sensor photoelectric switch holes, easy to assemble and expand Characteristics : Full Taobao lowest acrylic car, cost-effective Simple assembly, 5 minutes to complete the assembly. Powerful scalability, complete a variety of functions of the smart car 130 strong strong magnetic torque DC geared motor, not the motor acts as a toy, two to three times the normal torque motor provides 1:48 and 1: 120 ratio selectable speed than the speed the greater the load, the stronger code disc from the original 10 cells, 20 cells upgraded to make double precision and strength car information-rich, providing a variety of test code Quality send two 5 battery box, not the poor quality of the battery box to send tastelessly Package included: 1 x Round Acrylic Plate 1 x Acrylic Baseboard 2 x 65mm Wheel 2 x Universal Wheel 2 x Gear Motor 4 x "T" mode Fixed Motor Bracket 16 x M3X10mm Screw 8 x M3 Nut 4 x M3X12+6mm Copper Cylinder 4 x M3X30mm two-way Copper Column