LDR (Light Dependent Resistor) Sensor Module, also known as a photoresistor module, is a type of sensor designed to detect and measure the intensity of light in its surrounding environment. LDRs are passive components whose resistance changes in response to varying light levels. When integrated into a sensor module, LDRs provide a convenient way to detect light for various applications.
Hardware Overview
LDR Resistor: The Light Dependent Resistor (LDR), often made from cadmium sulfide (CdS), changes its resistance based on the intensity of light it is exposed to. In darkness, its resistance is high, and in bright light, it is low. This property makes it useful for detecting light levels in various applications, such as automatic lighting systems and light meters. The LDR’s resistance decrease with increasing light intensity, allowing it to function as a sensor for light changes. It is commonly used in circuits where the presence or intensity of light needs to be monitored.
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