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Reverse engineering my Coway air purifier to ditch the cloud
The year is 2017. A string of annual wildfires rocks the West Coast. The sky looks like this in the daytime: My home, like many in the Bay Area, has no insulation and isn’t really air sealed. To avoid choking on soot, a lot of people started buying air purifiers like this one: The venerable Coway Airmega
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