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I've been using a Adafruit Plantower PMSA003I and it always reads 0 even if the AQI is 90 at my place. It basically always reads 0 if the AQI is anywhere under
by dheera 5y ago
I've been using a Adafruit Plantower PMSA003I and it always reads 0 even if the AQI is 90 at my place.
It basically always reads 0 if the AQI is anywhere under 200, and pretty useless.
I wonder if there is a better I2C sensor that I could use?
- zahma 5y agoSounds like it’s not working. There is always particulate matter to be detected, so even if you are fortunate enough to live in a low-pollution area, there should be some PM readings. The AQI is just an estimation of how healthy it is to breathe particulate matter per 8hours or ozone per 24 hours. So if the AQI is reported to be 90, it means you should definitely see some PM readings. My sensor was not very expensive but worked very well for a couple years until it broke a couple weeks ago, likely from moisture. Go to the guides section of the sensor community site and see which sensors they recommend. I think they’re largely interoperable.
- dheera 5y agoWhat sensor are you using?