Arduino Air Quality Monitoring System Circuit Diagram. The complete air quality monitoring system project connection will be as follows with an OLED, DHT11 and MQ135 gas sensor connected to Arduino ...

This project is an Air Quality Monitoring System developed using the Arduino Uno microcontroller and an MQ135 gas sensor, designed to provide real-time air quality analysis and alert users about ...

The IoT-based air quality monitoring system described in this study uses cloud computing and Arduino to gather and analyze data in real-time. The system uses a collection of sensors, including ...

This project presents the development of a low-cost, portable air quality monitoring device using an Arduino microcontroller. The device is designed to measure key air pollutants, including ...

Abstract: An intelligent air quality monitoring system, based on the versatile and widely-used Arduino Uno microcontroller, has been designed and developed as the foundational platform. The system was ...

MQ-135 (Air Quality Sensor): Working: The MQ-135 measures air quality by detecting gases like NH3, NOx, alcohol, benzene, smoke, and CO2. It outputs an analog signal proportional to the gas ...

Smart Indoor Air Quality Monitoring Systems utilizing an Arduino Uno, ESP8266 Wi-Fi module, and MQ135 gas sensor represent a cost-effective and customizable alternative to commercial systems. The ...