We present a unified library for MQ sensors, this library allows to read MQ signals easily from Arduino, Genuino, ESP8266, ESP-32 boards whose references are MQ2, MQ3, MQ4, MQ5, MQ6, MQ7, MQ8, MQ9, MQ131, MQ135, MQ136, MQ303A, MQ309A.

micrOS - mini asynchronous automation OS for DIY projects.

📚🌀 Arduino library for the MQ135 air quality sensor. Allows for temperature and humidity corrected readings.

MQ-135 Air Quality Sensor Board CO2 Calibration

MQ135 & ADS1115 Working on Raspberry Pi. Measurement in PPM.

Scaled datacenter monitoring app for continuously increasing datacenter rooms.

In this step-by-step tutorial, you will learn how to build a simple air quality monitoring system using Arduino. Learn the basics of AQI and how air quality sensor works. We have also given the circuit diagram and Arduino code to help you build on your own.

ESP8266 Indoor Air Quality Monitor

MQ135 gas sensor with NodeMCU 1.0

Outdoor IoT system that collects environmental data, such as: soil moisture, temperature, air humidity and air quality.

DIY CO2 meter and grapher for home and office use

this project used for monitoring app : https://github.com/khakans/kostan-weather-station

an arduino library for the MQ family of gas sensors

Система мониторинга и сбора метрик о качестве воздуха и температуре

An Arduino based Air Quality Monitoring System using MQ135 gas sensor and DHT11 sensor. Data collected is analyzed on Thingspeak using linear and logistic regression.

Rust Library for MQ135 Sensor

P10(DMD) + RTC (DS3231) + BUZZER (MH-FMD) + AIR PRESSURE (HX710B) + AIR QUALITY GAS SENSOR (MQ135)

A weather logging system using an ESP32 with a DHT22, BMP280 and MQ135 sensors

An outdoor environmental monitoring system utilizing LoRa for long-range communication. This project captures air quality, temperature, and humidity data using Arduino and ESP8266. The data is then transmitted via MQTT to a Flask server for classification and an Android application for real-time visualization.

Air quality monitor system with Mega2560 R3 board and MQ135 sensor.