This code helps interface the MQ2 gas sensor with an Arduino microcontroller. The MQ2 gas sensor detects the levels of LPG, CO and smoke in air. This project can be used in various applications like ...

How do I choose a gas sensor? There are many different types of gas and smoke sensors available in the market. To choose one you need to refer to its datasheet and check if that particular sensor is ...

The application of sensors in smart homes using Arduino to control equipment such as lights, fans, alarms, and so on. Sensors used in Arduino include LDR, Ultrasonic, DHT11, and MQ2. LDR is used to ...

In this project, we are going to use MQ-135 sensor with Arduino to measure the CO2 concentration in PPM and display it on OLED.