Optical Encoder
An optical encoder is a device that converts the angular position or motion of a shaft into an analog or digital signal using light-based sensing. It typically consists of a light source, a rotating disk with patterns (like slots or lines), and photodetectors to read the patterns as the disk rotates. This enables precise measurement of position, speed, or direction in mechanical systems.
Developers should learn about optical encoders when working on projects involving robotics, CNC machines, or industrial automation, as they provide high-resolution feedback for motor control and positioning. They are essential in applications requiring accurate motion tracking, such as 3D printers, medical devices, or automotive systems, where reliability and precision are critical.