In this tutorial, we are going to learn how to use Arduino and MQ2 gas sensor to check the air quality by checking the concentrations of LPG, smoke, alcohol, propane, hydrogen, methane and carbon monoxide, or other flammable gasses.

With the MQ2 Gas Sensor Module, you can give your project a virtual nose—capable of detecting a wide range of gases including LPG, smoke, alcohol, propane, hydrogen, methane, and even carbon monoxide.

Apr 1, 2022 · MQ-2 Gas and Smoke Sensor Module – Parts. In most Arduino projects, the MQ-2 sensor is used to detect hazardous or flammable gas or smoke and hence this sensor is popular among beginners. Also these are low cost, easy to use sensors featuring a wide sensing range that can be trimmed down to adjust the sensitivity.

May 5, 2016 · The MQ-2 gas smoke sensor is an analog sensor. It outputs a voltage between 0 and 5V accordingly to the gas concentration in the atmosphere. The greater the gas concentration, the greater the output voltage.

Jul 25, 2020 · Learn how to use the BME680 environmental sensor module with Arduino to read gas, temperature, humidity and pressure. Build the circuit and write a sketch example.

When selecting a gas sensor for an Arduino project, it is important to consider the type of gas that needs to be detected, the required sensitivity and accuracy, and the operating conditions (such as temperature and humidity) that the sensor will encounter.

In this tutorial, we will learn how to interface MQ-135 Gas Sensor with Arduino Board. We will explore what is a gas sensor, how it works, its pin configuration and how to interface it with Arduino. What is MQ-135 gas sensor?

Feb 2, 2025 · In this project, we will build Gas Leak Detection & Alarm System using MQ2 Gas Sensor and Arduino UNO Board. The MQ2 sensor is a versatile gas sensor capable of detecting a wide range of gases as well as smoke.

May 12, 2022 · The Gas Sensor(MQ5) module is excellent for detecting gas leaks (in home and industry). It may be used to detect H2, LPG, CH4, CO, and alcohol. Measurements can be conducted as quickly as feasible because of its high sensitivity and quick reaction time.

Jul 30, 2023 · In this tutorial, we will learn how to use the MQ-4 Methane Gas Sensor with Arduino to build a gas detection alarm system. This system will utilize an LED and a buzzer to alert us when methane gas is detected in the environment.