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Machifit 5pcs 50rpm n20 dc gear motor miniature high torque electric screwdriver gear box motor...
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n20 dc gear motor
https://www.adafruit.com/product/4641
N20 DC Motor with Magnetic Encoder - 6V with 1:298 Gear Ratio : Adafruit Industries, Unique & fun...
The first step in a robotics project is to get a motor spinning. Once you've done that you quickly learn that not all motors go the same speed, even if they...