[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 ...

Stepper motors resemble servo motors in that both types are characterized by an ability to rotate a partial turn and then stop for any interval with or without holding torque. In addition, both motor ...

Making sense of servo couplings How does coupling selection affect productivity in today's automation environment? Bill Rexnord: Selecting couplings for Bill • Rexnord: Selecting couplings for servo ...