LDR (Light Dependent Resistor)

The 5mm Light-Dependent Resistor (LDR) sensor works effectively in both light and dark conditions, making it an essential component in electronics for detecting ambient light levels. LDRs, also known as photoresistors, are simple and reliable devices that change their resistance based on light intensity. As the light increases, the resistance across the sensor decreases, allowing for easy detection of varying light levels. In low light or darkness, the resistance is high, while in bright light, it drops significantly. This characteristic makes LDRs ideal for applications such as automatic lighting systems, light meters in cameras, and solar-powered streetlights. Often used in voltage divider circuits, LDRs can trigger actions like turning on a light or sending signals to a microcontroller, making them a versatile and cost-effective solution for light-sensitive applications.