[Chris] writes in to let us know about his latest animatronics tutorial, this time on robotic eyebrows! The tutorial takes us through the process of using a fairly simple PIC circuit to display ...

This article originally appeared on Heidenhain.us and has been published here with permission. Servo motors are electric motors that let engineers and designers precisely control position, velocity ...

It is an engineering truism that there is no such thing as a perfect solution—just the best solution for the problem at hand. That holds particularly true for servo motors and stepper motors. Both are ...