MagicMirror Forum
    • Recent
    • Tags
    • Unsolved
    • Solved
    • MagicMirror² Repository
    • Documentation
    • 3rd-Party-Modules
    • Donate
    • Discord
    • Register
    • Login
    A New Chapter for MagicMirror: The Community Takes the Lead
    Read the statement by Michael Teeuw here.

    MMM-DHT-Sensor - Get temperature & humidity values from a DHT sensor

    Scheduled Pinned Locked Moved Utilities
    22 Posts 9 Posters 15.6k Views 9 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • R Offline
      ryck Module Developer @Ogret
      last edited by

      @Ogret Sorry, I don’t have access to the mirror here, so I was waiting to get home today to reply to you. It’s just adding some code in the custom.css file with the right class, but seems like you already found how to do it!

      Cheers,

      1 Reply Last reply Reply Quote 0
      • P Offline
        PaulB
        last edited by

        Dear @ryck,

        I have installed your module and it works up to the point, where it shows me that “no data is returned”.

        I guess that my wiring is wrong.
        What do you think?

        R 1 Reply Last reply Reply Quote 0
        • R Offline
          ryck Module Developer @PaulB
          last edited by

          @PaulB Hi Paul

          That happens sometime, it’s related to the way the raspberry pulls data from the sensor, but it should be OK on the next try. Just in case, put a quick updateInterval (like 1 * 60 *1000) and see what happens…

          Also, you can try to get a read directly from the sensor, bypassing the MagicMirror. Just clone this (https://github.com/adafruit/Adafruit_Python_DHT) somewhere and edit and execute this (https://github.com/adafruit/Adafruit_Python_DHT/blob/master/examples/simpletest.py), ie, `python simpletest.py

          Good luck!

          1 Reply Last reply Reply Quote 0
          • P Offline
            PaulB
            last edited by

            @ryck
            Thank you for your help! :)
            Finally it works now.

            By the way… the module looks pretty cool ;-)

            R 1 Reply Last reply Reply Quote 0
            • R Offline
              ryck Module Developer @PaulB
              last edited by

              @PaulB Thank you!

              1 Reply Last reply Reply Quote 0
              • W Offline
                weeee99
                last edited by

                ive managed to install the module however the reading show 0 degress and 0% humidity im using a DHT22 btw is this a hardware problem or what? the sensor’s pin 1(Vcc) and pin 4(GND) is connected to a external 3.3v powersouce meaning the pin 2(data) together with a 10k ohms resistor connected in pin 1 and 2 is the only pin connected to the PIs GPIO0_1517635952159_Screenshot (282).png

                R 1 Reply Last reply Reply Quote 0
                • P Offline
                  PaulB
                  last edited by

                  @weee99,

                  It looks like the module is working, so it has to be a problem with your pins.
                  I would recommend to try it this way:

                  0_1517662084599_n5px8e6humFHzOR4kvYF.png

                  1 Reply Last reply Reply Quote 0
                  • R Offline
                    ryck Module Developer @weeee99
                    last edited by

                    @weeee99 Seems like the module is working… Have you tried to access the sensor directly? Look my previous post in this thread to know how to do it. Make sure that the pin in the correct one (GPIO and physical pins are not the same, so it can be a little bit confusing). Finally, the one I got (https://www.amazon.co.uk/gp/product/B01N6PB489/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) is plug directly to the Pi, no breadboard / resistance required…

                    1 Reply Last reply Reply Quote 0
                    • M Offline
                      Mo
                      last edited by

                      Hello ryck,

                      I have a problem with using your module.

                      When starting MagicMirror the module sometimes stays on “Recieving Sensor Data…” and doesnt actually read the sensor. In rare cases it works, but only once. The module doesnt read the temperature and humidity again and won’t update. I’ve already tried different Update intervals and delaying the initial load time.

                      I’m having this problem since the last update of module. Any ideas?

                      1 Reply Last reply Reply Quote -1
                      • Z Offline
                        Zoltan
                        last edited by

                        Hi
                        I have the same problem. Sometimes it will start and show correctly and other times it will just show “Loading sensor data”. When it starts It will then update the values for a few times. It then freeze and just wont update again. It doesn’t disappear like it should for 1/3rd of a second to do the update anymore.

                        1 Reply Last reply Reply Quote 0
                        • 1
                        • 2
                        • 3
                        • 2 / 3
                        • First post
                          Last post
                        Enjoying MagicMirror? Please consider a donation!
                        MagicMirror created by Michael Teeuw.
                        Forum managed by Sam, technical setup by Karsten.
                        This forum is using NodeBB as its core | Contributors
                        Contact | Privacy Policy