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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

List Good Monitors To Build With

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  • T Offline
    Timeeee @steve23p9835908
    last edited by Mar 13, 2017, 12:14 PM

    @steve23p9835908

    @steve23p9835908 said in List Good Monitors To Build With:

    Hi,

    I’m looking for a monitor right now to use in a PIR setup to save on power. My concern is that the monitor will display “no signal” when the HDMI signal is cut. Should I be worried about this and does anyone know how to get around it?

    Thanks,
    Steve

    Currently having the exact same problem. I’m currently looking into HDMI CEC stuff, but don’t know if I’m able to fix it with that. It may be the best option not to “cut” HDMI output, but to send the monitor into powersave-mode. I will investigate and let you know if there is some progress!

    1 Reply Last reply Reply Quote -1
    • Y Offline
      yawns Moderator
      last edited by Mar 13, 2017, 12:17 PM

      @Timeeee said in List Good Monitors To Build With:

      HDMI CEC

      using https://github.com/Pulse-Eight/libcec indeed works fine, I use the same thing on my pi. It is not yet connected to the PIR sensor, so I cannot provide a out-of-the-box solution for you.
      One thing you should keep in mind is the “boot delay” the screen needs when you resume out of standby.

      T 1 Reply Last reply Mar 13, 2017, 12:31 PM Reply Quote 1
      • T Offline
        Timeeee @yawns
        last edited by Mar 13, 2017, 12:31 PM

        @yawns said in List Good Monitors To Build With:

        @Timeeee said in List Good Monitors To Build With:

        HDMI CEC

        using https://github.com/Pulse-Eight/libcec indeed works fine, I use the same thing on my pi. It is not yet connected to the PIR sensor, so I cannot provide a out-of-the-box solution for you.
        One thing you should keep in mind is the “boot delay” the screen needs when you resume out of standby.

        Thank you dude!
        Maybe I can get Pulse-Eight running somewhere today. Will hook it up to my PIR as soon as possible :D

        The delay is fine for me, better then “no signal” ;)

        1 Reply Last reply Reply Quote 0
        • S Offline
          steve23p9835908
          last edited by Mar 13, 2017, 12:45 PM

          Do all HDMI devices respond to these commands or only particular models? If the latter, can you recommend one? Cheers, Steve

          Y 1 Reply Last reply Mar 13, 2017, 2:08 PM Reply Quote 0
          • Y Offline
            yawns Moderator @steve23p9835908
            last edited by Mar 13, 2017, 2:08 PM

            @Timeeee said in List Good Monitors To Build With:

            Maybe I can get Pulse-Eight running somewhere today.

            I followed these few steps: http://constey.de/2014/10/fernseher-ueber-hdmi-per-raspberry-pi-steuern-cec/
            I know the instructions are in German, but the commands should be enough.

            @steve23p9835908 said in List Good Monitors To Build With:

            Do all HDMI devices respond to these commands or only particular models?

            I would say most “smart” screens do, but I don’t have a list of screens which support this. Sorry

            T 1 Reply Last reply Mar 13, 2017, 7:01 PM Reply Quote 0
            • T Offline
              Timeeee @yawns
              last edited by Mar 13, 2017, 7:01 PM

              @yawns I think I tried it now for about 5hrs, but Im not able to build the CEC stuff (looks like the how-to is for an older version). Unfortunatly I need some more time to fix those build bugs :(

              1 Reply Last reply Reply Quote 0
              • T Offline
                tomster
                last edited by Mar 16, 2017, 11:52 PM

                I can’t tell if my approach would work on the MM-image, but on a RasPi with latest Jessie-image it seems pretty easy:
                sudo apt-get install cec-utils

                sudo usermod -a -G video [put user triggering the following commands here]

                To turn monitor on:
                echo on 0 | cec-client -s -d 1
                To turn it off:
                echo standby 0 | cec-client -s -d 1

                Of course it depends on the time your specific monitor will need to come out of deep stand-by. Mine takes 12 secs to respond :-(
                But I’ve seen monitors only needing 2 secs…

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                • C Offline
                  cowboysdude Module Developer
                  last edited by Mar 17, 2017, 12:24 AM

                  I also us ASUS monitors… have had great luck with them!! They seem to stand up to the use!

                  1 Reply Last reply Reply Quote 0
                  • J Offline
                    jdfraser
                    last edited by Mar 17, 2017, 4:31 AM

                    I’ve had success gutting an old IBM Laptop for its LCD. I ordered this driver board kit off of EBAY and it works great. The ribbon cable is a bit short, but I’ll worry about that when I finally get around to installing the LCD into a mirror / picture frame. My local recycling depot always seems to have a bunch of old laptops being disposed of. I recommend emailing the driver board seller to make sure you get the right one to work with your LCD.

                    1 Reply Last reply Reply Quote 0
                    • M Offline
                      mramitpatel
                      last edited by Mar 18, 2017, 7:26 PM

                      Great idea! Came here for this information and so far i see:

                      • Asus
                      • NOT Spectre
                      • Buy cheap x from thrift stores

                      I’m looking to build a mirror that is 28” x 36”. Given LCD prices, it seems like i should buy a TV. Any recommendations on either direction? Looking for a something thin, easy to work with - ie remove bezel, etc, has ports on the right side of display.

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