DHT11 Temperature and humidity sensor

 

DHT11

The DHT11 gives output for temperature and humidity calibrated digital signal.

Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in OTP memory.

The protocol looks like the 1-wire device communications bus system, but it’s different for more detail see the documentation.

Stanislav “CW” Simicek did some good work and made a C# class available, see  http://forums.netduino.com/index.php?/topic/2560-dht1122-sensor-managed-driver/. This worked fine for me and I’ve used this for the logging.

For a detailed description see also http://embedded-lab.com/blog/?p=4333

DHT11-22-wiring

 

 Posted by at 23:49

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