Infrared Sensor
An infrared sensor is an electronic device that detects and measures infrared radiation (heat) emitted by objects in its field of view. It works by converting infrared energy into an electrical signal, which can be processed to determine temperature, motion, or proximity. These sensors are widely used in applications ranging from temperature measurement and motion detection to remote controls and security systems.
Developers should learn about infrared sensors when building IoT devices, robotics, or automation systems that require non-contact sensing of heat, motion, or proximity. They are essential for projects involving smart home devices (e.g., motion-activated lights), industrial automation (e.g., temperature monitoring), and consumer electronics (e.g., TV remotes), as they provide a low-cost, reliable way to interact with the physical environment.