Gearmotor Wheel Encoder

Fits standard wheels, customizable


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Use this with an optical interrupter sensor to measure wheel revolutions. This one fits a small Optek slot sensor; you will likely have to change the radius and height of the toothed section to work with other sensors. (The sensor has to fit between the motor and the wheel, which can be finicky.)

Materials and methods

Black PETG. Other materials may work, but some filaments are transparent to IR in this thickness, so you might have to paint them.



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Mini lunamoth4rp10007 published this design ago