Problem with my pir sensor

  • Hi

    I have a pir installed but unfortunately the screen never goes into standby,

    The module MMMpirSsensor is nevertheless well installed I use the output gpio 22
    If it comes from the pir or elsewhere?
    thank you in advance

  • @Fonfon I don’t have a PIR sensor for my Magic Mirror yet, but I was just reading yesterday about problems with the PIR and Raspberry Pi 3

    Apparently, the PIR gets interference from the Wireless chip on the Raspberry Pi 3 and it causes it to give bad readings, even the Adafruit site has a note about it:

    “PIR sensors and the Raspberry Pi 3 sometimes don’t get along - if you’re having false trigger reports, make sure the PIR Sensor is far away from the Pi 3”

    Here is another possible solution - this guy used some kind of interference blocker on the wire, check it out:

  • HI

    thanks for your answering i put a ferrite bead near gpio connector but my output 15 gpio 22 is always high
    so my screen is always turn on .
    i don’t why …
    Perhaps my pir is broken because the first time I plugged in I reversed the power supply…

  • @Fonfon Did you try to adjust the resistance of the PIR?

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