Automatic Night Lamp Using LDR

Abstract

This project focuses on designing a night lamp that automatically turns on in the absence of light and gets turned off in the presence of light using a light-dependent resistor (LDR). The LDR is a sensor whose resistance decreases with increasing light intensity, enabling it to detect ambient light levels. When the surrounding light falls below a certain threshold, the circuit activates the lamp using a transistor as a switch. The design is simple, cost-effective, and energy-efficient, making it ideal for applications in homes, streets, and gardens.