Design and Development of IoT-Enabled Real-Time Environmental Monitoring System for Libraries Using ESP32 (Under Review)
Abstract
Libraries house valuable physical and digital resources sensitive to environmental factors like temperature, humidity, light, and air quality. This paper introduces a cost-effective, IoT-based real-time monitoring system using the ESP32 microcontroller to protect collections and improve user comfort. The system uses various sensors, including DHT22, BH1750, MQ135, and PM2.5, to collect the library's environmental data. The local HTTP web server makes management easier by providing a customizable user interface for visualization. In contrast, cloud services like Blynk, ThingSpeak, and Google Sheets allow for real-time visualization and long-term data analysis and logging. Real-world implementation and testing increase the system’s reliability for the library. Its architecture enables seamless sensor integration and future scalability, offering a robust, long-term IoT solution for library infrastructure.