LDR

LDR (Light Dependent Resistor) is a resistor that changes its resistance in the event of changes in the intensity of light in the surrounding areas. In principle, the intensity of the light to be able to push electrons through the boundaries - limits on the LDR. Thus, the value of the LDR resistance will increase if the intensity of the light it receives little or conditions around dark. Meanwhile, the value of the LDR resistance will go down if the intensity of the light it receives a lot of light or the surrounding conditions. LDR is often used as a light sensor, especially as a light sensor used in garden lighting. LDR shape can be seen in the picture above.