Humidity Sensor Shootout
If you want to measure humidity (and temperature, and maybe even barometric pressure) in a device that you’re building, have a look at this comprehensive test of seven different options. We’re going to summarize the results here, but you’ll really want to read up on the testing methodology — it’s great science hacking. Did you know about using saturated salt solutions to produce constant humidity levels for calibration? We didn’t.
The so-called DHT22 module doesn’t fare all that well, with one of six that [Robert] tested being basically horrible, and three of them breaking within two years of use. The …read more
