Stepper Motor
A stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps, allowing precise control of angular position without a feedback sensor. It operates by energizing electromagnetic coils in a sequence to rotate the motor shaft in discrete steps, making it ideal for applications requiring accurate positioning and speed control. Common types include bipolar and unipolar stepper motors, which differ in their wiring and control methods.
Developers should learn about stepper motors when working on robotics, 3D printers, CNC machines, or any project requiring precise motion control, as they offer high torque at low speeds and can hold position without power. They are particularly useful in embedded systems, automation, and prototyping where open-loop control (no encoder feedback) is sufficient for accuracy, such as in automated cameras, medical devices, or conveyor systems.