PIR sensor to turn monitor off. Nothing works :(

wishmaster270 · May 16, 2020, 6:50 PM

Hi,

i recently wrote a tutorial of how to use two of my modules to turn on/off the display with an PIR sensor.

I do not have much time to support at the moment but maybe it helps…

satsatt · May 16, 2020, 7:52 PM

I have an opposite behavior after updating MM.
After boot/reboot the mirror is on my HDMI Display but after awhile it disappears.
The motion sensor only activates the backlight of the display but no content.
In the webbrowser and with VNC viewer all is normal.
If i send

/opt/vc/bin/tvservice -p; sudo /bin/chvt 6; sudo /bin/chvt 7

it comes on again on HDMI but not stays.

Is there something like a screensaver for HDMI display active?

wishmaster270 · May 17, 2020, 6:04 AM

@satsatt
Hi,
it might be a problem with screen blanking.
If you edit your /boot/cmdline.txt like in this description it might solve the problem.

sdetweil · May 17, 2020, 11:20 AM

@wishmaster270 if you used the automated install script,m it will turn screen saver off for you if you reply yes…

you can also run the screensaver off script part from the installation repo here
https://github.com/sdetweil/MagicMirror_scripts

it will figure out what system and set it off appropriately.

elleclouds · May 17, 2020, 11:53 AM

@wishmaster270 I’ll follow yours today and report back.

elleclouds · May 17, 2020, 2:52 PM

@wishmaster270 got it working with your tutorial but once the monitor goes into sleep mode, after not receiving a signal, it doesn’t turn back on unless I unplug and plug it back in.

wishmaster270 · May 17, 2020, 4:20 PM

@elleclouds Hi, do you see any output of the Gpio module in the log file?

satsatt · May 17, 2020, 9:21 PM

@wishmaster270
the cmdline.txt was already ok , i really had to install xscreensaver and disable screensaver to solve my problem.

cowboysdude · May 18, 2020, 1:47 AM

It won’t get any easier then this…

https://github.com/cowboysdude/Pir-Sensor

elleclouds · May 18, 2020, 3:25 PM

@wishmaster270 said in PIR sensor to turn monitor off. Nothing works :(:

@elleclouds Hi, do you see any output of the Gpio module in the log file?

So I got it working with your tutorial. My only issue now is when the monitor doesn’t have a signal it turns completely off and won’t turn back on unless its unplugged and plugged back in. Is there a way to keep the monitor on, just asleep so that the HDMI signal when signaled, activates the screen?