2WD Smart Robot Car Chassis Kit with Speed Encoder, 4 Wheels and Battery Box for Kids and Teens DIY Product overview A readytoassemble robot car chassis kit designed for handson learning and experimentation. The kit provides a practical platform for building a small two wheel drive vehicle with closedloop speed feedback, powered by an included battery box and mounted on four wheels for stable movement. Key benefits Learn robotics fundamentals: Teaches mechanical assembly, basic electronics, and motion control in a single project suitable for kids and teens. Precise motion control: The builtin speed encoder supplies wheel rotation feedback for more accurate speed and distance control during programming experiments. Simple power and mobility: Four wheels and a compact battery box deliver a stable, portable base that runs independently from a host controller. Fast prototyping and : The chassis provides a modular foundation for adding sensors, controllers, and other components to expand functionality. What makes it stand out 2WD layout with speed encoder that supports closedloop control experiments rather than openlooponly movement. Includes four wheels and a battery box so builders can focus on learning and instead of sourcing basic parts. Designed for educational and DIY use by children and teenagers who want a reliable, handson introduction to robotics. Function and performance Function: Serves as a chassis for building a small robotic car with motor feedback via speed encoder. Drive: Two wheel drive configuration for efficient propulsion and straightforward control logic. Feedback: Speed encoder provides pulse output to monitor wheel rotation for speed regulation and odometry experiments. Power: Battery box included to power the chassis motors and encoders during standalone operation. Compatibility and expandability Intended as a base platform for common DIY electronics and robotics projects. Suitable for integration with microcontroller boards, motor drivers, and a range of sensors for navigation, obstacle avoidance, or line following. Components are easy to modify or to adapt the chassis to specific project needs. Use scenarios Classroom STEM project: Students assemble the chassis, wire the battery box, and program basic motion routines to learn control theory and teamwork. Weekend DIY build: Teens create a programmable rover, add sensors, and test speed control using encoder feedback for improved motion accuracy. Prototype platform: Hobbyists use the chassis to validate motor control algorithms, experiment with odometry, or test sensor layouts before scaling up. What you get A 2WD chassis kit with speed encoder Four wheels for stable movement Battery box for powering the system Clear learning path for assembly, testing, and expansion Practical, durable, and easy to extend, this chassis kit helps beginners and budding makers move from concept to working robot quickly while providing the core feedback needed for more advanced motion control experiments.