VGA (not a HDMI) sleep via PIR-Sensor

[bdream]

Hi guys,
I got my first Magic Mirror (it’s not a mirror but a display :) ) ready after a huge time…

Now as it stays in our kitchen it’s and burn power 24/7 :(

I want to save power and looked therefore about the possibility shut the display off in time nobody is looking to it.

I had a look to modules as MMM-PIR or MMM-PIR-Sensor and have the question if it is also possible for connected VGA-displays (connected with HDMI to VGA adapter to the Raspi)

Is there any, I have to know, before I order the sensor and rework the placed mirror?

Will one of these MMM-… work and save power and get the kitchen dark in the night?

Many thanks for your help and please don’t ask if I was not able to search the WWW for answers before… I did! Maybe with wrong search words or total misunderstanding about the threads…

Best regards, bdream

[AxLed]

@bdream
I use MMM-PIR-Sensor successful on my mirror (i also have a VGA Monitor connected via an HDMI Adapter) to safe power.

For your “safe power in the night” you can use another module, check MMM-ModuleScheduler (for scheduling) in combination with MMM-Remote-Control (for interaktions like monitor on/off).

AxLED

[bdream]

Hi AxLED, many thanks for your replay!
I’m off next two weeks and will try it afterwards.

I thought it will not run with VGA connection :S
So I’m happy with this information!

Best regards, bdream

[bdream]

Hi AxLED,
may I ask you for help please?

I did connect a PIR to my Rpi to PIN 40 / BCM 21

git clone https://github.com/mboskamp/MMM-PIR.git
cd MMM-PIR
npm install

Added the the config in the verry first line within the modules chapter

{
        module: 'MMM-PIR',
        position: 'top_center',
        config: {
                sensorPin: 21,
                delay: 10000,
                turnOffDisplay: true,
                showCountdown: true,
//                callbackScripts: ["callback.py"
        }
},

Nothing happen. No countdown starts. No Disply turn off.

Wiring was inslalled already:

pi@MagicMirror:~ $ gpio -v
gpio version: 2.50
Copyright (c) 2012-2018 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Pi 3, Revision: 02, Memory: 1024MB, Maker: Sony
  * Device tree is enabled.
  *--> Raspberry Pi 3 Model B Rev 1.2
  * This Raspberry Pi supports user-level GPIO access.

And I tried this command an a reboot:

sudo usermod -a -G gpio pi

Have you got any hints for me please?

[bdream]

no idea what to do getting display off while noone is infront of it using PIR-Sensor?

Cheers, bdream

[AxLed]

@bdream
There are two Pir Sensor Modules. I use MMM-PIR-Sensor. Maybe this helps.
AxLED

[sdetweil]

@bdream
MMM-PIR uses the tvservice command (see MMM-PIR/callbackscripts/default for the two scripts)

MMM-PIR-Sensor uses the /usr/bin/vcgencmd command

YOU have to make sure the different approaches work

my TV does NOT respond to ANY command…

[bdream]

Good Info!
Will play next days with MMM-PIR and MMM-PIR-Sensor investigating about needed scripts vs. /usr/bin/vcgencmd command

If I can’t get it run mayby I will add an relais to turn off the display…

At the moment I have to understand the both approaches and what my display is able to handle.
Could be no way is possible as it’s an verry old one.

Cheers, bdream