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by gh02t
3495 days ago
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Same, I had a lot of trouble with the DHT22 calibration, for temperature as well. And it was nonlinear, so I couldn't just add a correction. I switched to a mix of BME280, Si7021 and DS18B20s. Si7021 is pretty similar to the DHT22 in terms of nominal specs, but it's much better and cheaper. http://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.ht... does a pretty comprehensive review. |
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