Photo Sensor
A photo sensor, also known as a light sensor, is a device that detects light and converts it into an electrical signal. It responds to changes in light intensity and can be used in various applications, such as automatic lighting systems, security devices, and cameras. Common types of photo sensors include photodiodes, phototransistors, and photoresistors, each varying in sensitivity and response characteristics. They play a crucial role in enabling devices to adapt to different lighting conditions and enhance functionality.