HTU21D Temperature Humidity Sensor

I experimented with the DHT11 Temp & Humid sensor, compared the values to two digital and one analog devices, the humidity reading was off by several points. I tried 4 other DHT11 sensors and found them all to have the same offset from what was expected.

Later I got the HTU21D, and the humidity reading was spot on with what was expected.  Conclusion:  All my projects that need humidity readings, the HTU21D will be the device I use.




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