IoT Based Air, Smoke and Gas Monitor using MQ2 and Thingspeak Platform

Updated: May 31, 2021

Here to make Smoke and Gas Level Monitor Using MQ-2 Gas Sensor Module, thingspeak server. The measured the quantity of gas% in the air data can be monitored and stored in thingspeak server and data send and accessible over the internet.


In this tutorial, we are going to discuss how to interface the MQ2 smoke detector sensor with NodeMCU. The MQ2 sensor is a powerful sensor in order to measure different types of gases like Butane, Methane, LPG, Smoke, Alcohol,