MQ2 Gas Sensor Tutorial for Arduino, ESP8266 and ESP32
MQ2 Gas Sensor Tutorial for Arduino, ESP8266 and ESP32 In this tutorial I show you how to use the MQ2 gas sensor with your Arduino, ESP8266 or ESP32 microcontroller. After we dive into the functionality of gas sensors in general, we build a gas alarm with the MQ2 gas sensor that detects smoke and turn … Read more