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  • DHT11 /DHT22 Temperature Sensor 4 months ago

    Based on your description, everything seems right. Some ideas...

    Take a look at the pin diagram here to double-check your wiring:

    https://docs.microsoft.com/en-us/windows/iot-core/learn-about-hardware/pinmappings/pinmappingsrpi

    The web page for your Kuman DHT11 states it has a built in pull-up resistor. It doesn't give the size but from the photo looks to be 1K. This may be too small a value so you could try adding a 4.7K resistor between the data pin and 3.3V, just to be sure. If this does not make a difference, be sure to remove it before trying anything else.

    You could also try using another GPIO such as 5 (pin 29). On GPIO 5 your code could be either (try both)

    _dht = new Dht11(_pin, GpioPinDriveMode.Input);
    

    or

    _dht = new Dht11(_pin, GpioPinDriveMode.InputPullUp);
    

    One last thing to try, if you have any type of Arduino such as an Uno, connect the DHT11 to this board and test it with a DHT library. This is pretty straightforward. This optional test helps to determine if the sensor is working or not. There is information in this article on using this sensor with the Uno. Here is another Hackster article showing how to do this:

    https://www.hackster.io/techno_z/dht11-temperature-humidity-sensor-98b03b

  • DHT11 /DHT22 Temperature Sensor 4 months ago

    I'm not exactly sure what the issue is, but you can check your VS 2017 install. Make sure you have all of the latest updates installed. In addition, using the installer, select the Individual Components tab and make sure the Windows 10 SDK's are installed for both C# and C++.

  • DHT11 /DHT22 Temperature Sensor 5 months ago

    I apologize but I missed this comment. There is a new package on NuGet that corrects this issue.

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