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

    face recognizes display ON/OFF

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    • D Offline
      DJBOOB66
      last edited by

      hi I have been looking now for a few hours for a guide on how to get my face recognizes to turn my magic mirror display on when it recognizes my face can it be done and how thanks.

      S S 2 Replies Last reply Reply Quote 0
      • S Offline
        sdetweil @DJBOOB66
        last edited by sdetweil

        @djboob66 look at the Pir modules

        there are 4 different commands

        tvservice - pi only turn off/on hdmi
        vcgencmd - turn off/on hdmi
        dpms - turn off/on hdmi
        cec-client - turn off/on monitor

        the 1st 3 will leave monitor on, and monitor may show a big ‘no signal/input’ screen for up to 15 minutes before powering off, this is energy star compliance

        none of the commands that turn off hdmi can turn on the monitor after it powers off

        I have two cec tvs, but one will turn off, but not back on, and other will turn on, but not off

        soooooo. I use a hide/show all modules process

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        1 Reply Last reply Reply Quote 0
        • D Offline
          DJBOOB66
          last edited by

          I want a more securer way so My work Calander is not visible for other users this is why I’m going down the Face recognition .
          GAv3 can turn the screen ON OFF but anyone how to know the command can do so.

          S 1 Reply Last reply Reply Quote 0
          • S Offline
            sdetweil @DJBOOB66
            last edited by

            @djboob66 look at his code, he uses the same commands

            Sam

            How to add modules

            learning how to use browser developers window for css changes

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            • S Offline
              suvan @DJBOOB66
              last edited by

              @djboob66 Hey, have you found any code yet? I’m looking for the same thing as well. Really need help with this.

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

                @suvan looking for what?

                Sam

                How to add modules

                learning how to use browser developers window for css changes

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                • S Offline
                  sdetweil
                  last edited by

                  as I said before, look at the GA code that does this… its the same 4 commands as always

                  https://github.com/bugsounet/screen/blob/master/index.js

                  and

                   async setPowerDisplay (set) {
                      log("Display " + (set ? "ON." : "OFF."))
                      this.screen.power = set
                      this.SendScreenPowerState()
                      if (this.screen.awaitBeforeTurnOff && !set) await this.sleep(this.screen.awaitBeforeTurnOffTime)
                      // and finally apply rules !
                      switch (this.config.mode) {
                        case 1:
                          if (set) exec("/usr/bin/vcgencmd display_power 1")
                          else exec("/usr/bin/vcgencmd display_power 0")
                          break
                        case 2:
                          if (set) exec("DISPLAY=:0 xset dpms force on")
                          else exec("DISPLAY=:0 xset dpms force off")
                          break
                        case 3:
                          if (set) exec("tvservice -p && sudo chvt 6 && sudo chvt 7")
                          else exec("tvservice -o")
                          break
                        case 4:
                          if (set) exec("echo 'on 0' | cec-client -s")
                          else exec("echo 'standby 0' | cec-client -s")
                          break
                        case 5:
                          if (set) exec("xset dpms force on")
                          else exec("xset dpms force off")
                          break
                      }
                    }
                  

                  you should try each command to see what the results are
                  do this from and ssh connection to your pi, so you don’t have to fight getting the screen back on to work…

                  note that most of these turn off the HDMI port, and NOT the actual monitor.
                  many newer displays (since 2016) are energy star compliant and will display an upgly no input signal when the hdmi port is turned off… no way to override that

                  (and these displays will NOT turn back on when the hdmi port is turned back on)

                  ps… none of my displays will work with any of these commands

                  Sam

                  How to add modules

                  learning how to use browser developers window for css changes

                  cowboysdudeC 1 Reply Last reply Reply Quote 0
                  • cowboysdudeC Offline
                    cowboysdude Module Developer @sdetweil
                    last edited by

                    @sdetweil on the PI3… I just got mine working again this is the commands that work:

                    ON:
                    #! /bin/bash
                    sudo vcgencmd display_power 1

                    OFF:
                    #! /bin/bash
                    sudo vcgencmd display_power 0

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                    • S Offline
                      sdetweil @cowboysdude
                      last edited by

                      @cowboysdude cool. what monitor is that with?

                      Sam

                      How to add modules

                      learning how to use browser developers window for css changes

                      1 Reply Last reply Reply Quote 0
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