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Trouble with PIR sensor

Scheduled Pinned Locked Moved Troubleshooting
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  • J Offline
    jheller333
    last edited by Feb 12, 2018, 7:27 PM

    I’ve been really struggling with setting up a PIR sensor. All I want is for the PIR sensor to turn off the TV monitor, not just the HDMI port which seems to be what most of the modules do. Has anyone done this with their mirror that could help me out? Or is there another option for having monitor turn off when not being used? The mirror will be in my room and I obviously don’t want it on 24/7.

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    • C Offline
      cruunnerr
      last edited by cruunnerr Feb 12, 2018, 8:13 PM Feb 12, 2018, 8:05 PM

      @jheller333

      Maybe with a relay? :)

      take a look at point 5.2
      https://forum.magicmirror.builders/topic/6291/howto-turn-on-off-your-monitor-time-based-pir-button-app?page=1

      edit: but the normal MMM-PIR module can use a relay, too ;)

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      • J Offline
        jheller333
        last edited by Feb 12, 2018, 9:02 PM

        This post is deleted!
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        • J Offline
          jheller333
          last edited by Feb 12, 2018, 9:06 PM

          This post is deleted!
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          • C Offline
            cruunnerr
            last edited by Feb 12, 2018, 9:13 PM

            Try these commands in the *.sh files:

            vcgencmd display_power 1

            and

            vcgencmd display_power 0

            I need to update my post ^^

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            • J Offline
              jheller333
              last edited by Feb 12, 2018, 9:20 PM

              I don’t have a relay at the moment but I’m going to order one. In the mean time, I tried part 2 of your guide to test if I could get the PIR sensor working but it’s not. The HDMI port is disabled after 120 seconds of no presence in the sensor. When I wave my hand in front of the sensor to turn the pi back on, the HDMI port activates but I only get a black screen. Any suggestions for what to do?

              C 1 Reply Last reply Feb 12, 2018, 9:45 PM Reply Quote 0
              • C Offline
                cruunnerr @jheller333
                last edited by Feb 12, 2018, 9:45 PM

                @jheller333

                Look above :)

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                • J Offline
                  jheller333
                  last edited by Feb 12, 2018, 9:50 PM

                  I really appreciate the help. Been struggling with the PIR sensor for a week now. Is there a specific relay I should be looking for? I managed to get everything working with the PIR sensor, but once the TV turns off after there is no input detected, the PIR sensor can’t turn the tv back on. So it is not the most viable solution.

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                  • C Offline
                    cruunnerr
                    last edited by Feb 13, 2018, 4:49 AM

                    did u try what i posted?

                    U said, u tried part 2 of the tutorial. So u should have a “monitor_on.sh” and a “monitor_off.sh”

                    Try to change the content to the following:

                    sudo vcgencmd display_power 1 for monitor_on.sh
                    sudo vcgencmd display_power 0 for monitor_off.sh

                    or

                    sudo tvservice -p && sudo chvt 9 && sudo chvt 7 for monitor_on.sh
                    sudo tvservice -o for monitor_off.sh

                    If these don’t work at all u should go for the relay.
                    U could use every relay u want, but u should search for a 3 - 5V relay because otherwise u need to install a transistor.
                    https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR0.TRC0.H0.Xraspberry+pi+relay.TRS0&_nkw=raspberry+pi+relay&_sacat=0

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                    • J Offline
                      jheller333
                      last edited by Feb 14, 2018, 7:40 PM

                      I got a relay and followed your guide to connect it. The relay has an LED light on it but it doesn’t seem to trigger. I still have all the code setup for turning off the HDMI port with the PIR sensor, so I’m not sure if thats the problem. Any suggestions?

                      C 1 Reply Last reply Feb 14, 2018, 7:48 PM Reply Quote 0
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