A new open-source humanoid robot, ALANA, is attracting action in the maker community for its affordability and functionality.

An Arduino is used to determine the servo’s current position versus the desired position, and it turns the motor accordingly with a BTS7960 motor driver. The result is a sizeable and capable ...

Usually, when you want a servo motor, you simply buy one already made. But if you need something unusual, you can turn any DC motor into a custom servo you can control just like [Dejan] did.