5 ms·
Good choice with the PMS5003 which is in our experience one of the best sensors from Plantower. It is bigger than the PMS7003 or PMSA003 but in our experience m
by ahaucnx 4y ago
Good choice with the PMS5003 which is in our experience one of the best sensors from Plantower. It is bigger than the PMS7003 or PMSA003 but in our experience more accurate and has a longer life span.
A few things you can consider in the follow up blog post:
a) When you add the temperature and humidity sensor, one of the key aspects is to shield it from heating up inside the enclosure by the ESP (and also the PMS sensors create heat).
b) If you live in area or high humidity, the PM values will be overstated but there are compensation algorithms. We use for example the Di Antonio algorithm [1].
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164928/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164928/
- fnands 4y agoAny recommendation for CO2 sensors?
- ondori 4y agoscd30 does the trick
- moloch-hai 4y agoThe main thing you need to know about a CO2 sensor is that you also need a pressure sensor for its readings to mean anything. Expect to pay ~$50 for an actual CO2 sensor. The cheap "organic gas" VOC sensors don't qualify. But you probably should add on one of those anyway.
- roger_ 4y agoAlso the need for periodic outdoor calibration.
- MertsA 4y agoThe grandparent ships out the SenseAir S8 for CO2 so presumably they're still happy with it. I have no complaints myself but I haven't compared it to any reference standard. He's the founder behind AirGradient. https://www.airgradient.com/open-airgradient/ https://www.airgradient.com/open-airgradient/ They have a DIY version that's an open source design and you can either source components yourself or just skip trying to track down everything on the BOM and buy a kit from them that comes with a sleek injection molded housing as well.
- roger_ 4y agoDo you have a reference on the PMS5003 being better? Any thoughts on Plantower's newer sensors (e.g. PMS9003)?