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by burnt-resistor
376 days ago
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Needs a particle sensor like a PlanTower PMS5003 or it's not really worth the effort. I made an Arduino + PMS5003 + LCD for use during the NorCal fires of 2020 when the readings were 900+ μg/m^3. At that time, I was wearing a full-face P100 respirator outdoors because the visibility was down to about 100' / 30m. That was about the same time I bought an overpriced BlueAir 680i because Consumer Reports rated the similar BlueAir 605 as the best air purifier they ever tested. (Unfortunately, that whole line they used cheap bearings in the fan motors that fail after a few years without replacement parts that you have to disassemble the motors and swap yourself. The bearings, thankfully, are generic parts: 608ZZ.) |
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