PIR Sensor ??

[MDLefevere]

@sdetweil

Alright i got i working with this guide.

The only thing i’m now facing is, and i can’t understand this, that i get the message “Cable not connected” on my display.

When i was using it in crontab with “vcgencmd display_power 0” (timebased) it put the monitor in sleep mode and the led’s of the monitor turned off.
Now when using it in a .sh command the monitor stays on with this message.

Do you have any idea?

[sdetweil]

@mdlefevere well, when u ran in cron, you ran as root

in your script do you do

sudo vcgencmd display_power 0

[MDLefevere]

@sdetweil said in PIR Sensor ??:

sudo vcgencmd display_power 0

No i don’t
But i tried it already and didn’t make a difference.

Also if i sudo su and then use vcgencmd display_power 0 it’s not sleeping.

[sdetweil]

@mdlefevere this is where I have trouble… all my displays behave as u describe…

turn off the hdml and then they holler about no input… , and 15 mins later power off (energy start complaince) …

[MDLefevere]

@sdetweil

Hmm alright.
So do you have a “workaround”?. How do you handle this?. I just want the screen to be not on all day long when i’m just home for a couple of hours

[sdetweil]

@mdlefevere I use module hiding. never turn the display ‘off’

[MDLefevere]

@sdetweil

Ahh so. But doesn’t the backlight stay on all nigjt?. Not very energy efficiënt 😋

[sdetweil]

@mdlefevere yes. but can’t turn it off programatically… what else can I do?

[MDLefevere]

@sdetweil

So weird. I can’t imagine that a crontab can do it and the same line in a .sh not.
That’s bothering me. To be continued.

Saw another module im gonna try tomorrow: MMM-NewPIR

[sdetweil]

@mdlefevere they all use the same 4 commands

tvservice
vcgencmd
dpms
cec-client

top three turn off hdmi, leaving the ugly message
cec-client turns off the display, BUT, needs something 2018 or newer with CEC support
for it to work… my 55 in tv will turn off, but not on… (so much for standards!), and only from the pi4… nothing else.

this is the screen library in NewPIR
https://github.com/bugsounet/screen

use the same 4 commands

and the matching code

    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
    }

[c1olli]

I use a mini pir sensor like this:
https://www.ebay.de/itm/133654306312
That switches the monitor directy completely off without any programming.
That solution works on my MagicMirror since one year without any problems.

[cowboysdude]

@mdlefevere No real answer for this… I’ve tried several times. I can turn it off but not back on…

Are you running a pi4 or pi3?

This was my answer to the pi3 and it works… cannot figure out the pi4

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

[MDLefevere]

@c1olli

That might be nice.
But how about the startup?. Do you get the ugly brand boot screen first?. How longt to fire up?

[MDLefevere]

@cowboysdude
@sdetweil

I’m running a 8GB PI4.
I’ve installed NewPIR and configured it like this:

		{
			module: 'MMM-NewPIR',
			position: 'top_left',
			configDeepMerge: true,
			config: {
				screen: {
					delay: 20000,
					turnOffDisplay: true,
					mode: 1,
						},
				pir: {
					gpio: 17
				}, 
			}
		},

Strange enough it’s working now on another monitor. No sleepy “No Signal” text on screen but just a monitor turning in stand-by.
It’s not a new monitor --> Fujitsu L20T-4 connected with DVI

I can’t get my hands on it…

[sdetweil]

@mdlefevere that monitor is not energy star compliant.

the monitor doesn’t actually turn off, but enters some lower power mode. or they turn off backlight.

[MDLefevere]

@sdetweil

Ah i see.
But on the other hand: It goes into stand-by so the front light turns orange, and the screen goes all black (no backlight).

[sdetweil]

@mdlefevere yes… getting harder and harder to find monitors that do this…
none of mine do.

[MDLefevere]

@sdetweil

So. I came home after work frustrated that it didn’t work.
After connecting another HDMI cable everything is working as expected 🙄.

I had a MicroHDMI to HDMI convertor and a HDMI cable after that.

I ordered a Micro to HDMI so i could get rid of the convertor.

Strange enough it is working with the convertor cable.

[sdetweil]

@mdlefevere never a dull moment!
so not all cables are the same…

[MDLefevere]

@sdetweil
Defenitly not.
Although it’s weird at the end it’s working.

Going to test this a couple of days to see if it stays this way…