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  3. My Outdoor Motion Humidity Sensor

My Outdoor Motion Humidity Sensor

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  • H Offline
    H Offline
    hek
    Admin
    wrote on last edited by hek
    #3

    I have added a AC->AC converter to reduce the 24VAC (i have for led-lightning) to something 12V-ish which is feed to the Arduino.

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    • F Offline
      F Offline
      funky81
      wrote on last edited by
      #4

      Well, this looks good. but i still confused.
      arduino only support VDC right? not VAC. mind to explain how you supply arduino with VAC?

      thanks @hek

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      • H Offline
        H Offline
        hek
        Admin
        wrote on last edited by hek
        #5

        @funky81

        No wonder you are confused.
        Of course I meant DC->DC converter and 24VDC.

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        • B Offline
          B Offline
          bjornhallberg
          Hero Member
          wrote on last edited by
          #6

          I have a pretty good experience using the motion sensor outdoors. Been running mine since October on 2xAA batteries (no regulator) and the damn thing is still alive despite cold weather and being triggered 4-5 times a day (not counting the false positives). What is sort of tricky is avoiding is the false positives, e.g. magpies exploring the porch (I have the sensor at about knee level), sunlight rising and falling quickly on a day with spotty clouds and fireworks at New Years Eve. Bottom line, avoid incoming direct light at all cost and put it in a shaded place. Now it is possible that one might filter out those false positives using the sensitivity setting, I don't really know. I also suspect that having dry leaves and stuff get right up close and blow by the sensor is a source of some false positives.

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          • B bjornhallberg

            I have a pretty good experience using the motion sensor outdoors. Been running mine since October on 2xAA batteries (no regulator) and the damn thing is still alive despite cold weather and being triggered 4-5 times a day (not counting the false positives). What is sort of tricky is avoiding is the false positives, e.g. magpies exploring the porch (I have the sensor at about knee level), sunlight rising and falling quickly on a day with spotty clouds and fireworks at New Years Eve. Bottom line, avoid incoming direct light at all cost and put it in a shaded place. Now it is possible that one might filter out those false positives using the sensitivity setting, I don't really know. I also suspect that having dry leaves and stuff get right up close and blow by the sensor is a source of some false positives.

            A Offline
            A Offline
            Anticimex
            Contest Winner
            wrote on last edited by Anticimex
            #7

            @bjornhallberg If the reading is analog, you perhaps could "weight" the sample. A relatively big change rules out sunlight cycles and perhaps even clouds.
            EDIT: See now that the motion sensor is digital. So that would not be possible. But perhaps if combined with a light sensor.

            Do you feel secure today? No? Start requiring some signatures and feel better tomorrow ;)

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            • H Offline
              H Offline
              hek
              Admin
              wrote on last edited by
              #8

              @bjornhallberg

              I wlll put it on the eaves (takfot) without any direct sunlight.

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              • H hek

                @bjornhallberg

                I wlll put it on the eaves (takfot) without any direct sunlight.

                R Offline
                R Offline
                RJ_Make
                Hero Member
                wrote on last edited by
                #9

                @hek I noticed you are sleeping the sensor? Is the 24v not constant?

                RJ_Make

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                • R RJ_Make

                  @hek I noticed you are sleeping the sensor? Is the 24v not constant?

                  H Offline
                  H Offline
                  hek
                  Admin
                  wrote on last edited by
                  #10

                  @ServiceXp

                  Just an old habit...

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                  • H hek

                    @ServiceXp

                    Just an old habit...

                    R Offline
                    R Offline
                    RJ_Make
                    Hero Member
                    wrote on last edited by
                    #11

                    @hek Ah ok. I thought you might be up to something. :-)

                    RJ_Make

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                    • H hek

                      @funky81

                      No wonder you are confused.
                      Of course I meant DC->DC converter and 24VDC.

                      F Offline
                      F Offline
                      funky81
                      wrote on last edited by
                      #12

                      @hek Thanks for the clarification :+1:

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