15-08-2017, 05:09
(14-08-2017, 06:54)tobyportugal Wrote: I would be therefore for a comparative test AQI (PurpleAir/mine/WearherDuino), a good means to refine the AQI WearherDuino.
That is you supposing, that the one who may need to be refined is the WeatherDuino AQM.
We are working in the AQM for almost a year, testing it and comparing results in an hourly base with a nearest official AQICN station which is also not very far from you.
At this precise moment the official station in showing a AQ Index of 34, and our is reading a value of 36!
The WeatherDuino AQM will also use a sensor made by Plantower, but it will be a more recent and more precise version than the one used in the purpleAir unit. Optionally, our Air Quality Monitor could also use a SHARP sensor. I don't know which sensor are you using, but I would like to know, specially which hardware is used. A custom system? Arduino based? You wrote the code?