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    A New Chapter for MagicMirror: The Community Takes the Lead
    Read the statement by Michael Teeuw here.

    UPDATE: Replaced my PIR-Sensor with a Doppler Microwave Sensor.

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    • P Offline
      Philly @Fozi
      last edited by

      @Fozi I rechecked my wires and confirmed they were wired on the correct pins although the picture I sent does look off, the red wire is on the 5v, black is on gnd, and the brown wire is on GPIO pin 7. The config.js is also configured accordingly but when I npm start the Magic Mirror a blank screen continues to show. So I tried using the MMM_PIR module instead and got the same results, a blank screen. Not sure why the sensor’s not working

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      • G Offline
        Ghost2000
        last edited by

        @Fozi
        You wrote that you are using a double sensor is that this one?

        zerodis-HB100-Mikrowelle-Sensor-Modul-Doppler-detecor

        FoziF 1 Reply Last reply Reply Quote 0
        • FoziF Offline
          Fozi Project Sponsor @Ghost2000
          last edited by

          @Ghost2000 I use this one https://amzn.to/35SEYd3

          HowTo: Replace PIR Sensor with a RCWL-0516 Microwave Sensor

          G 1 Reply Last reply Reply Quote 0
          • G Offline
            Ghost2000 @Fozi
            last edited by

            @Fozi
            then did you connect two?

            FoziF 1 Reply Last reply Reply Quote 0
            • FoziF Offline
              Fozi Project Sponsor @Ghost2000
              last edited by Fozi

              @Ghost2000 no, it is a single sensor. You probably got irritated by the noun „Doppler“. This has nothing to do with double or to similar. The sensor uses an effect which was discovered by the physicist Christian Doppler. See also https://en.m.wikipedia.org/wiki/Doppler_effect

              HowTo: Replace PIR Sensor with a RCWL-0516 Microwave Sensor

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              • G Offline
                Ghost2000
                last edited by

                eah right, now I see

                1 Reply Last reply Reply Quote 0
                • M Offline
                  MajorC Project Sponsor
                  last edited by

                  Hi @Fozi ,

                  just to make sure that I am on the right way:

                  • Buy a RCWL-0516 module
                  • Wire the module to my Raspberry Pi 4
                  • Install @Bugsounet MMM-NewPIR on my MM

                  That’s it? Or did I miss something?
                  My MM is not a mirror, more a wall-mounted picture frame with some nice to have information on it. I would like to have the monitor turned off, if nobody is in the room.

                  Thank you,

                  Christian

                  FoziF 1 Reply Last reply Reply Quote 0
                  • FoziF Offline
                    Fozi Project Sponsor @MajorC
                    last edited by

                    @MajorC yeah, that are the steps to go. The RCWL-0516 module is a 1:1 replacement of the common IR sensors usually used. MAke sure to follow also the instructions I wrote (see link in my signature).

                    HowTo: Replace PIR Sensor with a RCWL-0516 Microwave Sensor

                    M 1 Reply Last reply Reply Quote 0
                    • M Offline
                      MickyVi @Fozi
                      last edited by MickyVi

                      @fozi

                      Good morning,

                      I also used a PIR sensor and obviously, behind the glass it does not work (the glass is 6 mm thick and the back of wood 3 mm), also I do not want it visible as the mirror will be positioned in the bathroom and behind I the power supply, so no wires remain in sight.

                      At the end of the story I found this topic and I also wanted to change the presence sensor.

                      I made my purchases as instructed and started testing.

                      The first test I did without modifying anything, simply connected, installed the MMM-Pir Paviro configured and it immediately started to work.
                      But I noticed one thing, my sensor is not so sensitive (indeed) I think it depends on those 9 mm total between the size of the mirror and the wooden board, if I move from behind and if I leave it too attached to the tablet wood does not detect anything (it detects only on the back or by moving the mirror from the wall).
                      I will also try to build a box to keep the sensor a little detached from the wood and let’s see what happens.

                      Any suggestions on this?

                      In the meantime, thanks to everyone for the advice and good construction with your MM.

                      Hello

                      uros76U FoziF 2 Replies Last reply Reply Quote 0
                      • uros76U Offline
                        uros76 @MickyVi
                        last edited by uros76

                        @mickyvi in my case it was the opposite experience. I have 3mm thick glass and back of the glass is covered by matte black paper. The initially installed microwave sensor (behind glass and paper) was too sensitive and could pick up movement up to 4-5m distance. That was too much for me so I had to modify the sensor by adding a trimmer.
                        Once the trimmer was added I could dial in the sensitivity as needed.
                        Here is my mirror… https://forum.magicmirror.builders/topic/13430/my-first-slim-mirror-at-home

                        In your design, maybe cut a hole in the wood back cover to fit the sensor in. That way the sensor will only need to go through 6mm glass. You can cover the space of the hole with black paper to eliminate any light entry there.
                        It’s hard to recommend anything smarter without knowing the details of your design. Do you have any picture you could share so we can see how the back of the glass enclosure looks like?

                        My magicmirror projects: https://forum.magicmirror.builders/post/79889, https://forum.magicmirror.builders/post/93241 and https://forum.magicmirror.builders/post/94586

                        M 1 Reply Last reply Reply Quote 0
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