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    Luca Fabbriani

    @Luca Fabbriani

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    Best posts made by Luca Fabbriani

    • RE: Motion Sensor triggering on its own

      Sorry for necroposting on my first forum post but I have the exact same issue at the moment. I power PIR sensors from the same 3.3V switching regulator that powers an esp12 module. I took off the anti-inversion diode and the linear regulator, added a 470uF and 100nF capacitor on the sensor supply input. This has been done to two sensors, one is working flawlessly the other one has a false trigger once every half an hour.
      Adding HF and LF bypass capacitors with some improvement told me that was a supply instability issue but it's not solving the problem completely. My suspect is that the polarity inversion diode that I took off had a role in the play improving the supply voltage stability.....I'll try to put back the diode and I'll let you know.

      cheers
      Luca

      posted in Troubleshooting
      Luca Fabbriani
      Luca Fabbriani

    Latest posts made by Luca Fabbriani

    • RE: Motion Sensor triggering on its own

      Sorry for necroposting on my first forum post but I have the exact same issue at the moment. I power PIR sensors from the same 3.3V switching regulator that powers an esp12 module. I took off the anti-inversion diode and the linear regulator, added a 470uF and 100nF capacitor on the sensor supply input. This has been done to two sensors, one is working flawlessly the other one has a false trigger once every half an hour.
      Adding HF and LF bypass capacitors with some improvement told me that was a supply instability issue but it's not solving the problem completely. My suspect is that the polarity inversion diode that I took off had a role in the play improving the supply voltage stability.....I'll try to put back the diode and I'll let you know.

      cheers
      Luca

      posted in Troubleshooting
      Luca Fabbriani
      Luca Fabbriani