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A New Chapter for MagicMirror: The Community Takes the Lead
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MMM-DHT22 Humidity and Temperature Module

Scheduled Pinned Locked Moved Utilities
47 Posts 14 Posters 42.4k Views 14 Watching
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  • B Offline
    Bangee Module Developer
    last edited by Jan 23, 2017, 7:08 AM

    can you post a pic of your wiring?

    when you run the command sudo ./dht_var direct in your console, what happens?

    1 Reply Last reply Reply Quote 0
    • S Offline
      schmo90
      last edited by schmo90 Jan 29, 2017, 7:07 PM Jan 29, 2017, 6:55 PM

      hy
      i have also the problem that the sensor shows only undefined.
      if i run your dht_var it shows nothing…
      sudo ./dht_var 2 5 returns after 5 seconds without any message…

      found out that it is only not working if i have enabled the PIR-Sensor Modul…

      1 Reply Last reply Reply Quote 0
      • F Offline
        fabrang @MxBln
        last edited by May 24, 2017, 8:04 AM

        @MxBln I have the same question. It works, but it shows me way to high temperatures and humidity. How did you do it with a DTC11 ?

        1 Reply Last reply Reply Quote 0
        • B Offline
          beck0r
          last edited by May 30, 2017, 1:45 PM

          same here, shows loading for a very long time and ‘undefined’ afterwards

          the sensor is working, see here:

          0_1496151901454_upload-79b4ac08-535a-4fe6-848e-99f80fe7650d

          any idea?

          1 Reply Last reply Reply Quote 0
          • D Offline
            Dracarys
            last edited by Dracarys Jun 5, 2017, 4:07 PM Jun 5, 2017, 3:43 PM

            Are there any news for this module? I have the exact same thing with this module and the DHT22. Sometimes it shows everything correct and then it shows either “undefined”, nothing or ~ “-3200°C”. So it changes almost everytime it refreshes.
            I also use the PIR module like Bangee but it doesnt matter if i have this modules activeted or not …the problem still is there.

            sudo ./dht_var 22 5
            

            doesn’t do anything. It just returns with no massage like it does by schmo90.
            Hope somebody can help us :)

            1 Reply Last reply Reply Quote 0
            • R Offline
              ryck Module Developer
              last edited by Jun 23, 2017, 8:43 PM

              Hi. I have the same issue, no response in the module or in the command line…

              I am also using a PIR sensor, maybe it’s related?

              J 1 Reply Last reply Oct 30, 2017, 9:30 PM Reply Quote 0
              • J Offline
                Johans @ryck
                last edited by Oct 30, 2017, 9:30 PM

                @ Bangee
                installed modules as described in read.me file but I get no reading of temp or hum.
                sensor is working, tested with AdaFruit example

                sudo ./AdafruitDHT.py 2302 27 (Data connected to gpio 27)
                I get a perfect temp & hum reading, so i’m shure sensor is working.
                i’m using an RPI3 - according to wiring pin, wpi 2 = gpio27 = physical pin 13.
                I think wiring is OK.

                only clock and this module installed.

                1 Reply Last reply Reply Quote 0
                • P Offline
                  PaulB
                  last edited by Jan 26, 2018, 5:51 PM

                  Hey guys :) Hope you are all good.
                  Finally I have the time to work on this module again :)
                  I had the same errors like you before and unsuprisingly did not found a solution for it.

                  Is someone in this thread still active?

                  J 1 Reply Last reply Jan 27, 2018, 2:04 PM Reply Quote 0
                  • J Offline
                    Johans @PaulB
                    last edited by Jan 27, 2018, 2:04 PM

                    @PaulB - glad you have found some time to work on it.
                    Yes I still have the problem with reading the data in the MM.
                    Hope you can find the cause. I would like to help you, but i’m not a programmer.
                    The only thing I could help on is perhaps some beta testing.
                    Cheers.
                    Johan

                    1 Reply Last reply Reply Quote 0
                    • D Offline
                      DocVooDoo
                      last edited by Feb 13, 2018, 4:02 PM

                      Hey, i have the same problem.
                      With “./Adafruit_Python_DHT/examples/AdafruitDHT.py 22 27” comes the Temperatur “Temp=20.1* Humidity=29.3%”
                      The DHT22 is Pinned on PIN 13 (27) (WiringPi 2). On the Mirror is the Temperatur and the Humidity undefined.
                      Whats the Problem? I found nothing…

                      R 1 Reply Last reply Feb 13, 2018, 4:09 PM Reply Quote 0
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