The LDR light sensor module is capable of detecting and measuring light in the surrounding environment. It's a simple yet versatile electronic component commonly used in various applications, from streetlights to automatic doors. In this tutorial, we will learn how to use an Arduino and an LDR light sensor module to detect and measure the. What Is a Light Dependent Resistor? A light dependent resistor (LDR), also known as a photoresistor, photocell, or photoconductive cell, is a passive electronic component whose electrical resistance varies based on the intensity of light falling on its surface. Their use is common in tools like automatic street lights, alarm clocks and light meters, because they are a very straightforward and simple method of sensing.
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