Arduino Projects
Winsen Low Power NDIR CO2 Sensor MH-Z1311A
A highly compatible NDIR CO2 sensor with a power consumption of less than 1mAh.
Cellular Polypropylene (PP) Boxes
Here's a great idea! Let's see how to easily make boxes for our projects in a homemade way, with cheap and easily available materials.
CO2 Gadget: Advanced CO2 Meter
CO2 Gadget is a firmware to create high quality CO2 meters, with optional sensors for particulate matter, temperature, humidity, atmospheric pressure and others that allow us to analyse the quality of the air we breathe. In this article I am going to introduce and show you how to install and use, the version ... Read more
CO2 Meter TFT Colour Display with TTGO T-Display Sensirion SCD30 - The CO2 Gadget
CO2 meter with colour display and Bluetooth connection. Take it with you everywhere and measure the air quality discreetly and at any time.
Sensirion SCD30 dual-channel NDIR CO2 Sensor
One of the best options. In some cases it is even the only recommended option.
CO2 meter on your mobile phone with ESP32 and Sensirion SCD30 sensor [BASIC VERSION] [BASIC VERSION].
CO2 meter with App for Android and iOS, via Bluetooth, official from the sensor manufacturer Sensirion
The Sensirion SCD4x CO2 sensor (SCD41 and SCD40)
This CO2, temperature and humidity sensor is much more than just a pretty face on a slim body...
CO₂ Meter with MQ-135 sensor (Don't miss it, it's not what it looks like)
In this article I am going to tell you what you have to do to mount a CO2 meter with a MQ-135 (sic) sensor. An easy and cheap tutorial (it's free). I hope that, if you are reading this article, it is because you have thought about building an easy and cheap meter with a MQ-135 sensor and ... Read more
Adding battery charger to ESP8266 and ESP32 (well done)
Learn how to add a rechargeable battery to your project, easily and safely.