CO2 Gadget: Advanced CO2 Meter

CO2 Gadget is a firmware to create high quality CO2 meters, with optional sensors for suspended particles, temperature, humidity, atmospheric pressure and others that allow us to analyze the quality of the air we breathe. In this article I am going to introduce you and teach you how to install and use the version ... Read more

CO₂ meter with MQ-135 sensor (Don't miss it, it's not what it seems)

In this article I am going to tell you what you have to do to mount a CO2 meter with an 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 an MQ-135 sensor and… Read more