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    A New Chapter for MagicMirror: The Community Takes the Lead
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    {HowTo} turn on/off your monitor (Time based, PIR/Button, App)

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    • F Offline
      fabbr
      last edited by

      I had the script running and all I got was “…” turns out I had the POWER and GROUND swapped because I was following the drawing on the initial post. I suggest looking at the your PIR board to make sure you are connecting the wires on the correct order.

      Overall fantastic write up. Thanks for sharing

      H 1 Reply Last reply Reply Quote 0
      • H Offline
        hnperkins @fabbr
        last edited by

        @fabbr i just got it working today. hadn’t had time to mess with it much. i was able to invert it in the config for the plugin and its been working great

        1 Reply Last reply Reply Quote 1
        • F Offline
          fabbr
          last edited by

          I used the method 2.2 Using PIR-Script and it work fine however, after a long period of time (that the screen is off and I am not doing anything on the raspberry) when I move in front of the PIR I can see the ON signal is sent to my monitor (the monitor LED change) but all I get is a blank screen.

          I did some testing and notice that when I connect with VNC to the raspberry the screen immediately comes back on so it makes me wonder if there’s some kind of screensaver or something of that nature that is on.

          Does anyone knows anything about this or had this problem before?

          Mykle1M 1 Reply Last reply Reply Quote 0
          • Mykle1M Offline
            Mykle1 Project Sponsor Module Developer @fabbr
            last edited by Mykle1

            @fabbr

            Have you disabled the screensaver? The easiest, most common way of doing that is to install xscreensaver and disable the screensaver that way

            Create a working config
            How to add modules

            F 1 Reply Last reply Reply Quote 1
            • F Offline
              fabbr @Mykle1
              last edited by yawns

              @Mykle1 Thank you that was the problem. Xscreensaver was easy use. Thanks

              Another problem I had was: when I changed the orientation of my monitor when it was coming back on all I saw was a black screen… so I did more research and found that that I could replace the tvservice for:

              vcgencmd display_power 0 turns off the screen

              vcgencmd display_power 1 turns on the screen

              That worked better with my monitor for some reason.

              1 Reply Last reply Reply Quote 0
              • B Offline
                blebbens
                last edited by

                Thanks for this tutorial…

                I am using a PIR. The monitor switches on immediately after detection of motion. I am looking for an option to switch on the monitor if a person stands in front of it for 10 seconds. Mine is a floor mirror, so some people are crossing the floor many times a day without looking at the mirror.

                cruunnerrC 1 Reply Last reply Reply Quote 0
                • cruunnerrC Offline
                  cruunnerr @blebbens
                  last edited by

                  @blebbens said in {HowTo} turn on/off your monitor (Time based, PIR/Button, App):

                  Thanks for this tutorial…

                  I am using a PIR. The monitor switches on immediately after detection of motion. I am looking for an option to switch on the monitor if a person stands in front of it for 10 seconds. Mine is a floor mirror, so some people are crossing the floor many times a day without looking at the mirror.

                  If u use the external PIR script (point 2.2) u could try to change line 25 in the script and define a TURNON-DELAY.

                  if turned_off and time.time() >= TURNON_DELAY:
                  

                  The whole script would look like this:

                  #!/usr/bin/env python
                  
                  import sys
                  import time
                  import RPi.GPIO as io
                  import subprocess
                  
                  io.setmode(io.BCM)
                  SHUTOFF_DELAY = 120 # in seconds, how long the monitor will be on until next button press or PIR detection
                  TURNON_DELAY = 10
                  PIR_PIN = 22       # 15 on the board (this needn't to be a PIR. Can be a button also)
                  LED_PIN = 16      # optional, don't use as Relay-PIN. It just shows detection time of the PIR without delay time
                  
                  def main():
                      io.setup(PIR_PIN, io.IN)
                      io.setup(LED_PIN, io.OUT)
                      turned_off = False
                      last_motion_time = time.time()
                  
                      while True:
                          if io.input(PIR_PIN):
                              last_motion_time = time.time()
                              io.output(LED_PIN, io.LOW)
                              print ".",
                              sys.stdout.flush()
                              if turned_off and time.time() >= TURNON_DELAY:
                                  turned_off = False
                                  turn_on()
                          else:
                              if not turned_off and time.time() > (last_motion_time + 
                                                                   SHUTOFF_DELAY):
                                  turned_off = True
                                  turn_off()
                              if not turned_off and time.time() > (last_motion_time + 1):
                                  io.output(LED_PIN, io.HIGH)
                          time.sleep(.1)
                  
                  def turn_on():
                  	subprocess.call("sh /home/pi/monitor_on.sh", shell=True)
                  
                  def turn_off():
                  	subprocess.call("sh /home/pi/monitor_off.sh", shell=True)
                  
                  if __name__ == '__main__':
                      try:
                          main()
                      except KeyboardInterrupt:
                          io.cleanup()
                  
                  

                  Don’t know if it will work. Just brainstorming cause i haven’t much time

                  K 1 Reply Last reply Reply Quote 1
                  • E Offline
                    erycken
                    last edited by

                    This is really helpful! Thanks.
                    I have a PIR motion sensor set up, but I am trying to work out if it is possible (or better yet already exists) to have the motion sensor become unresponsive/display not actually active during night hours (predefined by me) as I have the mirror set up in my room and if I get up during the night I don’t want it coming on as I never turn lights on since it takes forever for me to get back to sleep!
                    I do want the motion sensor to work like normal during the day however. Does the Cronjob method prevent the sensor from working during the on hours?

                    1 Reply Last reply Reply Quote 0
                    • cruunnerrC Offline
                      cruunnerr
                      last edited by

                      Hey mate,

                      the way that will work in every case is to use a relay to interrupt the voltage for the pir.
                      Then write two little bash files and execute them via cronjob.


                      turn on relay with GPIO 7 and give the PIR voltage:

                      gpio mode 7 out
                      gpio write 7 1
                      

                      turn off the relay with GPIO 7 and interrupt the PIR voltage:

                      gpio mode 7 out
                      gpio write 7 0
                      

                      otherwise u could use if statement with a datetime check within the python script. something like this: https://stackoverflow.com/questions/10048249/how-do-i-determine-if-current-time-is-within-a-specified-range-using-pythons-da/10048290

                      If i find some time, i will try to adjust the python script from this tutorial…

                      1 Reply Last reply Reply Quote 0
                      • K Offline
                        Kecko
                        last edited by

                        Hey, big thanks for this tutorial!

                        i want to use method 2.2 the PIR-Script.

                        My Problem is: it looks like there is always a movement detected!
                        i stuck on the point
                        “You can check if your button works by simply typing python pir.py. Every time u move through the PIR or press the button it will show you several …
                        End the test with “ctrl+c”
                        ”

                        It always print “…” for me.
                        That means that there is a movement all time right?
                        even if I disconnect the GPIO Pin there are all the dots…
                        i Realy cant figure out what i do wrong in this case… i mean it is only copy and paste and i did it the third time right now. also tried the MMM-PIR-Sensor module… not happy with it.

                        i realy dont know what to do now!

                        1 Reply Last reply Reply Quote 0
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