[Jim Fong] sent in this demo of his version of the UHU servo motor controller. [Uli Huber] has actually shipped over 2500 controllers for the servo. He doesn’t charge much for the chips ...

They must be paired with a drive, which is also known as a motion controller. As a system, servos convert electricity into precisely controlled motion (figure 1). A rotational servomotor could be used ...

this means cheap Electronic Speed Controllers (ESC) from a warehouse in China. [Ben] had a better idea: build his own ESC. He’s been working on this project for a while, and he’s polishing the ...