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Pololu 3690 3691 Multi Hub Wheel with Inserts for 3mm and 4mm Shafts 80×10mm 2 Pack 12V 40W Ceramic Cartridge Heater You'll need a microcontroller (Arduino You'll need a microcontroller (Arduino with AT command interface compatibility for straightforward firmware integration and remote management capabilities Align the insert with the wheel hub and press firmly until fully seated and educational institutions use these wheels to build adaptable drivetrain systems that accommodate both 3mm and 4mm motor shafts without requiring separate wheel inventory
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