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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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    • uros76U Offline
      uros76 @Lipax
      last edited by

      @Lipax said in UPDATE: Replaced my PIR-Sensor with a Doppler Microwave Sensor.:

      hello,
      i tried this with the microwave sensor, but im out of ideas. i get wrong positives every minute. (i check every 5 sec).
      i added also the ferrite, tried another raspberry, different of these sensors (bought a 5 pack) and placed it in a different room. anyone got any ideas what else i could try?
      or maybe similar microwave sensors i could try?

      any help would be great, tyvm

      Did you try and limit the range as described in beginning of this thread? For me option 2 helped to limit oversensitivity.

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

      L 1 Reply Last reply Reply Quote 0
      • L Offline
        Lipax @uros76
        last edited by

        @uros76
        the range is not the problem. i get positives when nothing is moving near it

        uros76U kayakbabeK 2 Replies Last reply Reply Quote 0
        • uros76U Offline
          uros76 @Lipax
          last edited by

          @Lipax this sensor is very sensitive and catches any movement 360 around from several meters away. I had same problem… If you don’t dial down the sensitivity-range you will keep getting false positives.

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

          1 Reply Last reply Reply Quote 1
          • kayakbabeK Offline
            kayakbabe @Lipax
            last edited by

            @Lipax try dialing down the sensitivity, it’s probably picking up dust or something small you can’t see.

            1 Reply Last reply Reply Quote 0
            • L Offline
              Lipax
              last edited by

              thanks for the help, but i doubt its some kind of movement since its exactly every minute. i tried a different room and its the same.

              bewegung1.jpg

              S 1 Reply Last reply Reply Quote 0
              • S Offline
                sdetweil @Lipax
                last edited by

                @Lipax please don’t submit duplicate posts…

                all users with reputation below 2 have their posts reviewed… this eliminates all the porn, advertising and trash posts from the forum.

                it just takes time for (me) to get to review the posts…

                Sam

                How to add modules

                learning how to use browser developers window for css changes

                L 1 Reply Last reply Reply Quote 1
                • uros76U Offline
                  uros76
                  last edited by

                  Can you share your python code? Perhaps there’s something there

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

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                  • L Offline
                    Lipax @sdetweil
                    last edited by

                    @sdetweil sry about that

                    @uros76 i hope thats not the problem

                    import RPi.GPIO as GPIO
                    import time
                    import datetime
                    
                    switch=11
                    
                    
                    GPIO.setmode(GPIO.BOARD)
                    GPIO.setup(switch, GPIO.IN)
                    
                    
                    
                    
                    try:
                        while True:
                            if GPIO.input(switch) == 1:
                                now = datetime.datetime.now()
                                print(now.strftime("%Y-%m-%d %H:%M:%S"), "something")
                                
                            time.sleep(5)
                            
                            
                    except KeyboardInterrupt:
                        print("Bye Bye")
                    finally:
                        GPIO.cleanup()
                    
                    

                    thanks for the help

                    uros76U 1 Reply Last reply Reply Quote 0
                    • uros76U Offline
                      uros76 @Lipax
                      last edited by uros76

                      @Lipax try different gpio pin, like a pin 18 which is a GPIO 5. It’s default set to input function. Don’t forget to adjust the python code, change switch to 18.

                      You might check the GPIO 0 (your pin 11) if it is set to input. Use command: raspi-gpio get 0 or raspi-gpio get to check all GPIO’s.

                      Also, use a multimeter to measure the voltage coming out from sensor. It should be around 3.3V for few seconds when sensing detected. This way you can monitor if actual detection / voltage is coming from sensor.

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

                      L 1 Reply Last reply Reply Quote 0
                      • L Offline
                        Lipax @uros76
                        last edited by

                        @uros76
                        i forget to mention i already changed the pin, i first tried pin 7 before

                        according to pinout.xyz my pin 11 is gpio 17

                        GPIO 17: level=0 fsel=0 func=INPUT
                        

                        thank you very much for helping me, i dont have a multi meter but ill ask my father to do that. u think its not the sensor sending the signal? maybe it picks up something with the wire along the way? i dont have a engineering background.

                        uros76U 1 Reply Last reply Reply Quote 0
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