Simple mechanical structure, it is easy to install. Smart robot car with code disk, ideal for DIY. Use for educational learning, smart robot car competition, and entertainment. Can be used for distance measurement, velocity. This car is the tachometer encoder. Can use with other devices to realize function of tracing, obstacle avoidance, distance testing, speed testing, wireless remote control. Carry two DC gear motors. Motor reduction ratio is 1:48 (at 3V) Made of premium environment-friendly materials
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