In various countries, you may have seen that street light gets ON immediately when the night shows. This happens because these night lights use an automatic night light sensor. An automatic night light sensor is an electronic device that can sense the light sensitivity in the surrounding area & determine whether it's day or night. In this tutorial, we are going to make an Automatic Night Light Sensor Project. It has various applications and can be utilized at so many places at night.
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working of an LDR. The light-dependent resistor functions when there is darkness around. In normal conditions, when there is light, The resistance in the circuit can't allow the electric current to flow. However, when the night comes and LDR faces the darkness, the resistance gets decreased, allowing the current to flow.