The SGP30 is a very interesting sensor out of the latest generation that gives us information on indoor air quality. Designed for installation in air purification devices and Internet of Things projects. It consists of many metal-oxide measuring elements that the manufacturer calls pixels that are embedded in a single packet called multi-pixel.
This sensor measures VOC (Volatile Organic Compounds), which includes all substances that can easily evaporate and directly affect air quality (eg cleaning tools) and CO2. With two of these data, it is possible to precisely determine the air quality. This information is easy to access via I2C communication.
The known problem of this type of sensor is its short “life”. Most sensors are designed to be easily and quickly replaced, as they usually last 6 months and in some cases 12 months. This sensor, due to the already mentioned multi-pixel technology, and after 8 years, gives almost the same good results as the first day.