1. [What's in the package?]-This robot tracked car chassis package includes: driving wheel 2, bed wheel 2, robot trail 2, frame 1, dc motor kit 2. You can install the robot car in a few minutes with various rich work guides in Gitnova and a detailed guide in this connection. Tank car chassis kit DIY is a good friend to start. Metal gears for the motor can provide strong and stable strength. Therefore, robot chassis is a good choice for robot competition activities. The design is watched, this car barrier floor, grassland, off-road and so on. Multiple holes in the frame can attach different sensor and electronic accessories to the car chassis, such as Arduino, Raspberry Pi and Nodemcu. This smart wheel robot kit is a good start for you to learn the robot information that can work with many control systems, for example Arduino, Raspberry Pi, Nodemcu, 51mcu. By installing and programming this robot, you can understand the information of the embedded ROS, STM32, Rashed pie. In addition, you can learn the DC encoder engine, caterpillar, shock suspension system, bed, load, wheel. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store