The Air Quality Monitoring System tracks various air quality metrics such as PM1.0, PM2.5, PM10, and gas concentrations (CO2, VOCs) using a combination of sensors. Data is transmitted via Wi-Fi using ...

The code first checks if the concentration of harmful gases is not safe, if so, it gives a fast buzzer warning (250 ms between sound warnings) . If not, it checks if the level is close to being ...

The project illustrates how an Arduino board was interfaced with MQ-3 Alcohol Gas Sensor to create the Breathalyzer. One ADC input of Arduino is required to obtain the simple connection of the sensor.

Abstract: LPG is an alternative fuel used for daily use. Due to its low cost and ease of installation. This article covers an Arduino-based gas detection system that uses an Arduino UNO R3 board and ...