Reads Co2 Sensors like TFA-Dostmann AirCO2ntrol or similar with USB ID 04d9:a052

This repository has the code that helps you to build DIY CO2 measuring devices and connect them to your smartphone.

Seeeduino XIAO CO2 Monitor (Arduino Sketch & Processing Sketch)

Yet another CO2-Ampel with web interface for configuration and live sensor readings, logging, RESTful api, MQTT and optional LoRaWAN support

DIY, low cost esp-platform based CO2 monitor ;-)

A short pure micropython sgp30 project for M5Stack Core or Grey.

macOS Swift CLI app to read data from RAD-301 (and other) CO2 monitors

An open-source CO2 monitor helping to ensure a healthy environment in a class room and slowing down the spread of the corona SARS-CoV-2 virus.

Monitor and show CO2, temperature, humidity and pressure with M5StickC+ENV II Unit+MH-Z19C (Arduino)

.NET library for the HT2000 CO2 USB data logger, with support for dumping logs

Build your own CO2 data logger for school.

Measures the CO2 level in the room and gives a warning when to ventilate. All values are also distributed via MQTT.

Raspberry Pi program for air monitoring

DIY Frugal CO₂ Sensor: Arduino & inexpensive parts to build a sub-$100 system to track and evaluate COVID-19 risk using CO₂ levels to estimate ventilation and occupancy.

Simple CO₂ LED Meter

Monitoring air quality (CO2, temperature, humidity and TVOC) with a Raspberry Pi, an MH-Z19 and an VMA342 sensor.

CO2 Monitor Sample. ZyAura ZG-01 sensor based modules.