Unusual switch – Let there be light

For this assignment I have designed a circuit that turns on an LED when the surrounding environment is dark. The light detector serves as a switch that closes the circuit when light is not detected.

The light Dependent resistor LDR functions as a switch in this case. This component is very important as it allows to close the electrical circuit depending on the level of light in the surrounding environment. Such a circuit would be great to light up gardens and outdoor spaces at night automatically without having an actual human manually close the circuit.

Using an electrical component such as an LDR allows the user to save up on electricity for lighting. But it also comes with its drawbacks as sometimes the detector is not as accurate as we would like it to be but in many situations it does the job as in displayed in this project.

Leave a Reply