AUTOMATIC STREET LIGHT USING Ldr
Ms . Pranita Kanadkhedkar, Ms . Shruti Kokadwar, Ms .Nita Lohar, Ms . Shruti Puyed
Street lighting constitutes an essential part of urban infrastructure, offering safety, visibility, and security during night hours. Traditional street lights, however, consume energy continuously without regard to actual necessity, resulting in high operational costs and inefficient power utilization. This paper presents the design and implementation of an Automatic Street Light Control System using Light Dependent Resistors (LDR), Infrared (IR) sensors, and a microcontroller (Arduino/ATmega328P). The system detects ambient light levels and vehicle presence to optimize energy consumption. Experimental results demonstrate up to 40–60% energy savings compared with conventional systems. The proposed system is cost-effective, scalable, and easily adaptable to real-world applications.