The complete schematics to connect MQ-135 Gas Sensor with Arduino is given below: The circuit is very simple as we are only connecting the MQ-135 Sensor and OLED Display module with Arduino Nano.

This Arduino sketch reads the gas concentration of CO2 and LPG (Liquified Petroleum Gas) values from two sensors, the MQ-135 and MQ-2, and then communicates the values to ROS using the following ...

we are going to discuss the MQ-5 sensor, and attach that to an Arduino to see what happens when gases are moved closer to it. Let's dive into it. The MQ-5 Sensor is popular among beginners since it ...

ANAVI Gas Detector is an ESP8266 based board designed for MQ gas sensors supported by Arduino. This allows you to easily monitor air quality, or more accurately air conductivity using MQ-135 sensor as ...

This project demonstrates how to interface the MQ135 Gas Sensor with Arduino to measure CO2 levels in parts per million (ppm). When the CO2 level exceeds a threshold (650 ppm), the display will flash ...