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I just got a pi zero w and a adafruit spg30. Not perfect, but good enough, I own the data, and I send it to grafana for alerting.


Yeah all these consumer-grade air quality sensors are nothing more than a Sensirion SPS30 or a Plantower PMS5003 and a Wi-Fi module in a box.

To get more than just that you need to look at professional-grade indicative AQ sensors such as https://clarity.io/ and https://www.aeroqual.com/

These are what government agencies and municipalities use for dense sensor networks. E.g. https://www.breathelondon.org/


The clarity also uses the Plantower sensor. A high price does not necessarily mean better sensor modules.




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