ESP32-Based Air Quality Monitoring System
The ESP32-Based Air Quality Monitoring System is an IoT-based environmental monitoring project designed to measure and display air quality parameters in real time. The system uses an ESP32 microcontroller as the main processing unit due to its built-in Wi-Fi capability, high processing speed, and low power consumption. It continuously collects data from the MQ135 gas sensor, which detects harmful gases and air pollutants, and the DHT11 sensor, which measures the surrounding temperature and humidity.
The sensor data is processed by the ESP32 and displayed on a 16×2 LCD for instant local monitoring. In addition, the ESP32 can transmit the collected data to an IoT cloud platform such as ThingSpeak, allowing users to monitor environmental conditions remotely through graphs and data logs. This enables continuous observation of air quality trends and supports data analysis over time.
The main objective of this project is to create a simple, low-cost, and efficient system for monitoring indoor or outdoor air quality. Poor air quality can negatively affect human health by causing respiratory problems and discomfort. By providing real-time information, the system helps users become aware of pollution levels and take preventive measures when necessary.
This project has applications in homes, classrooms, offices, laboratories, industries, hospitals, and public buildings where maintaining good air quality is important. The modular design allows additional sensors, such as CO₂, PM2.5, or smoke sensors, to be integrated in the future, making the system more versatile.
Overall, the ESP32-Based Air Quality Monitoring System demonstrates the practical application of embedded systems, sensor interfacing, and IoT technology. It provides a reliable and user-friendly solution for environmental monitoring while improving awareness of air pollution and promoting healthier living conditions. The project also serves as an excellent educational prototype for students to learn about embedded systems, wireless communication, and real-time sensor data acquisition.
