[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly ... up to the motion controller upstream. The Arduino source for this can be found on the project ...

A DC motor is charged with driving the assembly ... via a magnet mounted in the servo’s gear. An Arduino is used to determine the servo’s current position versus the desired position, and ...

This solar tracker system uses the Arduino UNO board, a servomotor, 2 LDRs and 2 resistors to rotate the solar panel towards the Sun or a source of light. Here https ...

Pittman® brand Series N2300 slotted brushless DC servo motors incorporate internal Hall sensor feedback for linear speed-torque characteristics, high starting torque, and variable speed control ...