Problem with Humidity sensors



  • Hi everyone,

    I am building a automation system in order to cultivate mashrooms in a closed environment and I want to keep the humidity around 75%.

    I used DHT22 temperature/humidity sensors but after a few days the measurements were about 99% RH and I suppose that the sensors broke down due to high humidity environment. What do you think about that?

    I am thinking of buying better sensors which can hold longer. I have found these:
    https://www.adafruit.com/product/1293

    Do you have any suggestions? How can avoid the damage of the sensors by high humidity enviromnents?


  • Mod

    Welcome to the MySensors community @Gus8 !

    See the study linked in https://forum.mysensors.org/post/38344 if you haven't already. it has a lot of details on accuracy.



  • @Gus8 How are you powering the sensors and what is your schematic. Are you running these as battery operated nodes?



  • Thank you all for your responses.
    I use an Arduino Uno and it is power by a power supply of 9V/1.5A . The sensors are power through arduino's +5V output.



  • @Gus8 Do you either have a pull-up resistor in place, 4k7 to 10k, or possibly have the internal pull-up resistors enabled for the data line that you have it connected to?


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