MagicMirror² v2.12.0 is available! For more information about this release, check out this topic.

VGA (not a HDMI) sleep via PIR-Sensor



  • Hi guys,
    I got my first Magic Mirror (it’s not a mirror but a display 🙂 ) ready after a huge time…

    Now as it stays in our kitchen it’s and burn power 24/7 😞

    I want to save power and looked therefore about the possibility shut the display off in time nobody is looking to it.

    I had a look to modules as MMM-PIR or MMM-PIR-Sensor and have the question if it is also possible for connected VGA-displays (connected with HDMI to VGA adapter to the Raspi)

    Is there any, I have to know, before I order the sensor and rework the placed mirror?

    Will one of these MMM-… work and save power and get the kitchen dark in the night?

    Many thanks for your help and please don’t ask if I was not able to search the WWW for answers before… I did! Maybe with wrong search words or total misunderstanding about the threads…

    Best regards, bdream


  • Module Developer

    @bdream
    I use MMM-PIR-Sensor successful on my mirror (i also have a VGA Monitor connected via an HDMI Adapter) to safe power.

    For your “safe power in the night” you can use another module, check MMM-ModuleScheduler (for scheduling) in combination with MMM-Remote-Control (for interaktions like monitor on/off).

    AxLED



  • Hi AxLED, many thanks for your replay!
    I’m off next two weeks and will try it afterwards.

    I thought it will not run with VGA connection :S
    So I’m happy with this information!

    Best regards, bdream



  • Hi AxLED,
    may I ask you for help please?

    I did connect a PIR to my Rpi to PIN 40 / BCM 21

    git clone https://github.com/mboskamp/MMM-PIR.git
    cd MMM-PIR
    npm install
    

    Added the the config in the verry first line within the modules chapter

    {
            module: 'MMM-PIR',
            position: 'top_center',
            config: {
                    sensorPin: 21,
                    delay: 10000,
                    turnOffDisplay: true,
                    showCountdown: true,
    //                callbackScripts: ["callback.py"
            }
    },
    
    

    Nothing happen. No countdown starts. No Disply turn off.

    Wiring was inslalled already:

    pi@MagicMirror:~ $ gpio -v
    gpio version: 2.50
    Copyright (c) 2012-2018 Gordon Henderson
    This is free software with ABSOLUTELY NO WARRANTY.
    For details type: gpio -warranty
    
    Raspberry Pi Details:
      Type: Pi 3, Revision: 02, Memory: 1024MB, Maker: Sony
      * Device tree is enabled.
      *--> Raspberry Pi 3 Model B Rev 1.2
      * This Raspberry Pi supports user-level GPIO access.
    
    

    And I tried this command an a reboot:

    sudo usermod -a -G gpio pi
    

    Have you got any hints for me please?



  • no idea what to do getting display off while noone is infront of it using PIR-Sensor?

    Cheers, bdream


  • Module Developer

    @bdream
    There are two Pir Sensor Modules. I use MMM-PIR-Sensor. Maybe this helps.
    AxLED



  • @bdream
    MMM-PIR uses the tvservice command (see MMM-PIR/callbackscripts/default for the two scripts)

    MMM-PIR-Sensor uses the /usr/bin/vcgencmd command

    YOU have to make sure the different approaches work

    my TV does NOT respond to ANY command…



  • Good Info!
    Will play next days with MMM-PIR and MMM-PIR-Sensor investigating about needed scripts vs. /usr/bin/vcgencmd command

    If I can’t get it run mayby I will add an relais to turn off the display…

    At the moment I have to understand the both approaches and what my display is able to handle.
    Could be no way is possible as it’s an verry old one.

    Cheers, bdream


Log in to reply