I built one as well, and with a whole bunch of other sensors (CO, CO2, alcohol/V... | Hacker News

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		dheera on May 12, 2021 \| parent \| context \| favorite \| on: AirGradient: DIY Air Quality Monitoring with Open-... I built one as well, and with a whole bunch of other sensors (CO, CO2, alcohol/VOC, O3, PM2.5, PM10, humidity, magnetic field, IMU to detect earthquakes, and even a Geiger counter). https://dheera.net/projects/airmonitor/ Only problem is I found the PMSA003I always reports PM2.5 = 0 when actual values are anywhere below 100ish. It only begins to detect after that.

ahaucnx on May 12, 2021 [–]

We also had issues with the PMSA003. Better use the PMS5003 that is code compatible and has a better reliability.

dheera on May 12, 2021 | [–]

Thanks, I didn't realize that. Will give it a try.

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