Automatic Street Light using Arduino
The Automatic Street Light using Arduino project is a smart lighting system that automatically turns ON and OFF street lights based on the surrounding light intensity. It uses a Light Dependent Resistor (LDR) as a sensor, an Arduino Uno as the controller, and LEDs to simulate the street lights. This project is simple yet effective, ideal for beginners and students to understand the concepts of light sensing and automation.
The core principle is based on detecting ambient light using an LDR, which changes its resistance depending on the amount of light falling on it. During the daytime, when natural light is available, the LDR’s resistance is low, and the Arduino keeps the LED (street light) OFF. As it gets dark, the resistance increases, triggering the Arduino to turn ON the LED. This automatic switching helps save electricity and ensures lighting is available when needed.
In practical applications, this system can be scaled up using relays to control high-power street lights, solar panels for sustainable energy, and batteries for energy storage. With further enhancements, it can be made part of a smart city system by adding motion sensors, timers, or remote monitoring through IoT.
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