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Amazon.com: The perseids DIY Robot Smart Car Chassis Kit Educational Toy with Speed Encoder, 4 Wheels and Battery Box for Arduino/Microbit/Raspberry Pi (4 Wheels) : Toys & Games
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Amazon.com: Professional DIY Tracked Robot Chassis Smart Tank Car Platform Kit with 2pcs High Torque DC Motors, Caterpillar Robotic Crawler Sciences Eduactional Model for Arduino Raspberry Pi STEAM : Everything Else
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