• G. Manga Rao
• P. Sravani
• S. Sreelekha
• P. Akash
• R. Hareesh

With increasing urbanization and technological advancement, efficient energy management has become a vital aspect of sustainable city planning. Street lighting, being a major energy consumer in urban areas, requires smarter solutions to reduce power consumption and maintenance costs. This paper presents a Smart Street Light Fault Detection System based on Internet of Things (IoT) technology. The system integrates a NodeMCU microcontroller, Light Dependent Resistor (LDR), and the ThingSpeak platform to monitor and control street lighting automatically. The NodeMCU reads ambient light levels through the LDR sensor to determine when to turn street lights on or off, enabling automated lighting control based on environmental conditions. In addition to optimizing energy usage, the system includes a fault detection mechanism that identifies irregularities—such as lights remaining on or off despite changing lighting conditions—which could indicate operational faults. ThingSpeak is used to collect and visualize real-time LDR data, allowing remote monitoring and sending alerts to maintenance personnel when faults are detected. This timely information helps ensure quick response and reduces infrastructure downtime. Overall, the system enhances energy efficiency, supports predictive maintenance, and promotes sustainability. It demonstrates how IoT can be effectively applied to create smarter and more efficient urban infrastructure.

Keywords: Smart Street Lighting, Internet of Things (IoT), Fault Detection, NodeMCU, Light Dependent Resistor (LDR) Energy Efficiency, Automated Lighting Control, Things Speak, Real-Time Monitoring, Urban Infrastructure, Sustainable Cities, Predictive Maintenance

"IoT Based Street Lights Control & Fault Detection System for Smart City Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 4, page no.l200-l204, April-2025, Available :http://www.jetir.org/papers/JETIR2504B23.pdf

"IoT Based Street Lights Control & Fault Detection System for Smart City Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 4, page no. ppl200-l204, April-2025, Available at : http://www.jetir.org/papers/JETIR2504B23.pdf