Hooked to an Arduino, the motor made a workable encoder, later improved by sending each phase through a comparator and using digital inputs rather than using the Nano’s ADCs. It looks like ...

HOG840 is the cost-efficient variant particularly designed for wind turbines and machinery. It features high C4 corrosion ...

but creating a completely custom servo motor with encoder requires some significant engineering. In the video after the break [365 Robots] takes us through the build process of a closed-loop motor ...