Dear MagicMirror-ians

As may already known I was a real fan of MMM-Pir.
For also good known reasons this nice module is not longer maintained.

I have a local clone which runs OK but in the meantime I had switched to MMM-MQTTScreenOnOff wich attaches a “better” (radar-) sensor to my mirror. But I’ve missed the progress bar, the dimming and cron-like functionality. In addition the radar sensor is much slower than PIR- caused by a 5 second update intervall as minimum.

After plenty of tinkering and testing, and above all torturing AI heavily I’m excited to announce:
MMM-PresenceScreenControl is finally out! 🎉

This module brings together the best of both worlds:
• The beloved timer bar and auto-dimming from MMM-Pir,
• The reliability, MQTT support, and simplicity of MMM-MQTTScreenOnOff,
• All cleaned up, without unnecessary complexity, cryptic cron strings, or weird build tricks.

A few highlights:
• Presence detection with PIR, MQTT, or both (whichever triggers first wins)
• A visual timer bar so you always know how long the screen will stay on
• Straightforward “ignore” and newly introduced “always-on” time windows using plain times and days—no cryptic cron needed
• Customizable screen on/off commands—works on Pi, PC, X11, Wayland, CEC, and more
• Touch mode for remote or manual override (yes, you can poke your mirror awake remotely!)

If you’re after spinning circles or relay magic, this isn’t your thing (yet 😉).

But if you want a solid, readable, and maintainable presence module that just works—even (hopefully) after updates—this is for you.

Give it a try, share your feedback, open pull requests, or ask questions right here or on GitHub:

Happy mirroring!

Ralf

Hello to all,
I’ve started end of last week and today I’m nearly happy with my modules and arrangement.

Had struggled somtimes with several modules, not all of interest are currently maintained so sometimes I cannot get run it properly.
Just now I’m “ready” with config - future steps are purchasing the mirror (sample pack is shipping) and build up the frame.
Tomorrow the PIR sensor will arrive so in addition I have to figure out if and how this works and intergrate this sensor into the build.

Future step is the integration of a background LED stripe - not sure about this because I’m currently not sure if I’m able to switch this LED on/off in conjunction with monitor (out of MMM-Pir).

Here a current screenshot:

I’ve used standards (weather, clock, newsfeed) and:

MMM-Globe
MMM-MyGarbage
MMM-CalendarExt3Agenda
MMM-Strava
MMM-NowPlayingOnSpotify
MMM-ToDoist
birthdaylist
MMM-SystemStats
MMM-SystemInfo
(MMM-Pir - “installed” but lacking sensor, so disabled and not tested)

Target Monitor is a 27’’ Samsung device and I will mount this behind a 120cm*60cm mirror.
(Will post an image, if ready…)

I’m thinking about enriching the szenario with an 8’’ android tablet for streaming, but not sure…

Nice rest of the day to all of you, thanks for your really GREAT work and highly motivated assistance in this forum.

Warmest regards,
Ralf

And here the target monitor in action - 27’’ Samsung…

Keep you posted.

Regards,
Ralf

@_V_ My module MMM-PresenceScreenControl Offers a comfortable way to switch on or off during defined times - as much as you like per day as much days as you like.

Regards,
Ralf

Dear mirror fans,
for your information and reference some findings with my mirror.
I’m running a MagicMirror on a PI5 with an NVME HAT as boot device.
My first approach was to de-assemble an original Pi power supply (because of its form factor) and to build this internally into the mirror-frame.
As reported earlier in a different thread this power supply died due to overheating.

My next approach was to use a new PI-power supply - this time externally.
Caused by the circumstances of my installation (power plug far below mirror position and Pi mounted on the top of the mirror) I have used a USB-C to USB-C cable (150cm, 5A) to extend the standard-cable.

As it turns out now this wasn’t a good idea, ether:
It worked pretty long (several weeks) good and without any problem.
But since some days I got more and more really stubborn WLAN losses which were often unrecoverable - only plugging out power supply to reforce a restart helped (I’m working headless as majority of you).

In the meantime I was able to implement a tiny service which automatically detects the connectivity loss and restarts the WLAN, so a sufficient symptomatic treatment is in place - this discovers connectivity every five minutes, which is OK to me.

While I was just tinkering I’ve thought it could be a nice idea to identify the root cause and so I added some logging features in the mentioned service.

Now the interesting (unexpected) finding: Obvious root cause was an undervoltage!

I’ve searched around (because initially I failed to remember my “cable-extension”) but couldn’t find any reason for this (nothing attached else than the NVME and my mirror doesn’t have anything heavily using the harddisk)…

Then the additional cable came in my mind and - voilà - this was the root cause - despite its thickness and 5A specification.
For now I have added some 230V cabeling to the top of the mirror, installed there (outside the mirror frame) a third (de-assembled) PI power supply and connected the standard-long cable of this power supply to the Pi.
Since then no undervoltage detected (prior to this every few minutes).

So my learning: Pi is bitchy with cable extensions and tiny undervoltages can lead to heavy WLAN problems.

May one or the other can benefit from these findings.

Warm regards,
Ralf

@chrisfr1976
have solved it by myself…
Used @sdetweil 's tip with developer console and identified CSS classes for the icons.
Have set

.MMM-Temp2IOT .iconify {
    font-size: 0px; /* Symbole verschwinden lassen */
}

in custom.css -
works :-)

Warm regards,
Ralf

@cpcode
Really cool!

For your families’ whishes: A nice module für RTPS strems of security cams is “MMM-MPlayer” …
There are several other modules around but the other ones do have several dependencies and requirements.
MMM-Mplayer use (as name suggest) simply mplayer.
Works like a charm …
@myfingersarecold has done a really nice job with this.

Regards,
Ralf

@kool said

Bumping this back up. Pleeeease help

Dear @kool ,

if you are using url as suggested by Sam ( @sdetweil ), you are nearly done.
As far as I can see from my rookie perspective you do have some redundancies in your config.js (e.g. the unit section: units, tempUnits, windUnits) ) but this shouldn’t disturb.
As far as I understood you can delete these icontables because you do not use the icon-font but try to use some images from sigle file-URLs instead - so you can delete the whole section iconTable {} with all entries.

In addition you have to adapt (see above, Sam’s tip) the URL of all you images in your custom.css file.
(pls. double check, if the files are really in these locations)
You wrote in your current css

.weatherforecast .wi-day-sunny {
content: url("/home/kool/MagicMirror/css/icons/6fas/day.svg") !important;

}

IF your weather-icon files are really in this directory (/home/kool/MagicMirror/css/icons/6fas/) than your css should be as follows:

.weatherforecast .wi-day-sunny {
 content: url("/css/icons/6fas/day.svg");

You do not need the !important flag (in my case)

second wrong thing besides the URL is your qualifier.

you are using

.weatherforecast .wi-something  ....

This cannot be recognized because .weatherforecast is not defined.

At first you have to decide if you want to have different icons for the current weather and for the weather forecast.
(In my case this is true).
IF you would like to have this you have to differentiate the two instances of the weather-module by a “classes” definition.

For example your first instance of the weather module (current weather) than should be

   module: "weather",
    position: "top_right", // Adjust position as needed
    classes: "weather_current",
    config: {
        weatherProvider: "openmeteo", // Specify the Open-Meteo provider
        apiBase: "https://api.open-meteo.com/v1", // REQUIRED: Base URL for Open-Meteo

       lat: xxxx, // REQUIRED: Latitude of the location
        lon: xxxx, // REQUIRED: Longitude of the location
        maxNumberOfDays: 8, // OPTIONAL: Number of forecast days (default is 5)
        pastDays: 0, // OPTIONAL: Number of past days of data to include (default is 0)
   units: "imperial", // Set this to 'imperial' for Fahrenheit and miles per hour
        tempUnits: "imperial", // Make sure to match with 'imperial'
        windUnits: "imperial",
        type: "current", // OPTIONAL: Change to "current" if only current weather data is desired

 
    }
},

(pay attention for the third line: classes: “weather_current”, )
THIS is your qualifier if you are about to diffrentiate between current weather and weather forecast image-wise.
(“weather_current” is just an example! you can name it like you want every name is suitable and OK, only pay attention that all of these namings are strictly case sensitive, so Weather is NOT the same as weather"

Your correct line for custom.css than is:

.weather_current .wi-day-sunny {
 content: url("/css/icons/6fas/day.svg");

and the same dance than for your second instance with DIFFERENT classes-clause in config.js
(e.g. a " classes: “weather_forecast”, " in the definition of the second weather instance ) results in a custom.css entry like this:

.weather_forecast .wi-day-sunny {
 content: url("/css/icons/some_other_directory_with_smaller_icons/day.svg");

Because the “forecast instance” of the weather module is (in my case) organized as table I found it really useful to differentite these logos - big ones for current, smaller ones for the forecast:

If You do NOT like to differentiate the current and forecast instance you do NOT need the classes-phrase in config.js and your correct qualifier is the name of the module (so “weather” ) and your custom.css entry is like this:

.weather .wi-day-sunny {
 content: url("/css/icons/6fas/day.svg");

And this than is valid for both instances.

Keep in mind that there are a LOT more weather conditions than the two times 5 conditions you have defined in your current custom.css!

my own definition for the current weather for your reference:

.weather_current .wi-fog  {
content: url("/css/icons/current/wsymbol_0007_fog.png");
}
.weather_current .wi-cloudy  {
content: url("/css/icons/current/wsymbol_0002_sunny_intervals.png");
}
.weather_current .wi-cloudy-windy {
content: url("/css/icons/current/wsymbol_0004_black_low_cloud.png");
}
.weather_current .wi-rain  {
content: url("/css/icons/current/wsymbol_0018_cloudy_with_heavy_rain.png");
}
.weather_current .wi-showers  {
content: url("/css/icons/current/wsymbol_0017_cloudy_with_light_rain.png");
}
.weather_current .wi-thunderstorm  {
content: url("/css/icons/current/wsymbol_0024_thunderstorms.png");
}
.weather_current .wi-snow  {
content: url("/css/icons/current/wsymbol_0019_cloudy_with_light_snow.png");
}
.weather_current .wi-snowflake-cold {
content: url("/css/icons/current/wsymbol_0020_cloudy_with_heavy_snow.png");
}
.weather_current .wi-na {
content: url("/css/icons/current/wsymbol_0999_unknown.png");
} 

.weather_current .wi-day-sunny  {
  content: url("/css/icons/current/wsymbol_0001_sunny.png");
}
.weather_current .wi-day-cloudy  {
  content: url("/css/icons/current/wsymbol_0043_mostly_cloudy.png");
}
.weather_current .wi-day-cloudy-gusts  {
  content: url("/css/icons/current/wsymbol_0004_black_low_cloud.png");
}
.weather_current .wi-day-cloudy-windy  {
  content: url("/css/icons/current/wsymbol_0004_black_low_cloud.png");
}
.weather_current .wi-cloudy-windy  {
  content: url("/css/icons/current/wsymbol_0004_black_low_cloud.png");
}
.weather_current .wi-day-fog  {
  content: url("/css/icons/current/wsymbol_0007_fog.png");
}
.weather_current .wi-day-hail  {
  content: url("/css/icons/current/wsymbol_0015_heavy_hail_showers.png");
}
.weather_current .wi-day-haze  {
  content: url("/css/icons/current/wsymbol_0005_hazy_sun.png");
}
.weather_current .wi-day-lightning  {
  content: url("/css/icons/current/wsymbol_0016_thundery_showers.png");
}
.weather_current .wi-day-rain  {
  content: url("/css/icons/current/wsymbol_0085_extreme_rain_showers.png");
}
.weather_current .wi-day-rain-mix  {
  content: url("/css/icons/current/wsymbol_0009_light_rain_showers.png");
}
.weather_current .wi-day-rain-wind  {
  content: url("/css/icons/current/wsymbol_0010_heavy_rain_showers.png");
}
.weather_current .wi-day-showers  {
  content: url("/css/icons/current/wsymbol_0018_cloudy_with_heavy_rain.png");
}
.weather_current .wi-day-sleet  {
  content: url("/css/icons/current/wsymbol_0087_heavy_sleet_showers.png");
}
.weather_current .wi-day-sleet-storm  {
  content: url("/css/icons/current/wsymbol_0089_heavy_sleet.png");
}
.weather_current .wi-day-snow  {
  content: url("/css/icons/current/wsymbol_0011_light_snow_showers.png");
}
.weather_current .wi-day-snow-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0057_thundery_snow_showers.png");
}
.weather_current .wi-day-snow-wind  {
  content: url("/css/icons/current/wsymbol_0053_blowing_snow.png");
}
.weather_current .wi-day-sprinkle  {
  content: url("/css/icons/current/wsymbol_0009_light_rain_showers.png");
}
.weather_current .wi-day-storm-showers  {
  content: url("/css/icons/current/wsymbol_0018_cloudy_with_heavy_rain.png");
}
.weather_current .wi-day-sunny-overcast  {
  content: url("/css/icons/current/wsymbol_0002_sunny_intervals.png");
}
.weather_current .wi-day-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0024_thunderstorms.png");
}
.weather_current .wi-day-windy  {
  content: url("/css/icons/current/wsymbol_0060_windy.png");
}
.weather_current .wi-solar-eclipse  {
  content: url("/css/icons/current/wsymbol_0005_hazy_sun.png");
}
.weather_current .wi-hot  {
  content: url("/css/icons/current/wsymbol_0045_hot.png");
}
.weather_current .wi-day-cloudy-high  {
  content: url("/css/icons/current/wsymbol_0006_mist.png");
}
.weather_current .wi-day-light-wind  {
  content: url("/css/icons/current/wsymbol_0060_windy.png");
}
.weather_current .wi-night-clear  {
  content: url("/css/icons/current/wsymbol_0008_clear_sky_night.png");
}
.weather_current .wi-night-alt-cloudy  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-alt-partly-cloudy  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-alt-cloudy-gusts  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-alt-cloudy-windy  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-alt-hail  {
  content: url("/css/icons/current/wsymbol_0031_heavy_hail_showers_night.png");
}
.weather_current .wi-night-alt-lightning  {
  content: url("/css/icons/current/wsymbol_0032_thundery_showers_night.png");
}
.weather_current .wi-night-alt-rain  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-alt-rain-mix  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-alt-rain-wind  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-alt-showers  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-alt-sleet  {
  content: url("/css/icons/current/wsymbol_0029_sleet_showers_night.png");
}
.weather_current .wi-night-alt-sleet-storm  {
  content: url("/css/icons/current/wsymbol_0029_sleet_showers_night.png");
}
.weather_current .wi-night-alt-snow  {
  content: url("/css/icons/current/wsymbol_0028_heavy_snow_showers_night.png");
}
.weather_current .wi-night-alt-snow-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0075_thundery_snow_showers_night.png");
}
.weather_current .wi-night-alt-snow-wind  {
  content: url("/css/icons/current/wsymbol_0071_blowing_snow_night.png");
}
.weather_current .wi-night-alt-sprinkle  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-alt-storm-showers  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-alt-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0032_thundery_showers_night.png");
}
.weather_current .wi-night-cloudy  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-cloudy-gusts  {
  content: url("/css/icons/current/wsymbol_0044_mostly_cloudy_night.png");
}
.weather_current .wi-night-cloudy-windy  {
  content: url("/css/icons/current/wsymbol_0044_mostly_cloudy_night.png");
}
.weather_current .wi-night-fog  {
  content: url("/css/icons/current/wsymbol_0064_fog_night.png");
}
.weather_current .wi-night-hail  {
  content: url("/css/icons/current/wsymbol_0039_cloudy_with_heavy_hail_night.png");
}
.weather_current .wi-night-lightning  {
  content: url("/css/icons/current/wsymbol_0032_thundery_showers_night.png");
}
.weather_current .wi-night-partly-cloudy  {
  content: url("/css/icons/current/wsymbol_0041_partly_cloudy_night.png");
}
.weather_current .wi-night-rain  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-rain-mix  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-rain-wind  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-showers  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-sleet  {
  content: url("/css/icons/current/wsymbol_0029_sleet_showers_night.png");
}
.weather_current .wi-night-sleet-storm  {
  content: url("/css/icons/current/wsymbol_0029_sleet_showers_night.png");
}
.weather_current .wi-night-snow  {
  content: url("/css/icons/current/wsymbol_0027_light_snow_showers_night.png");
}
.weather_current .wi-night-snow-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0075_thundery_snow_showers_night.png");
}
.weather_current .wi-night-snow-wind  {
  content: url("/css/icons/current/wsymbol_0028_heavy_snow_showers_night.png");
}
.weather_current .wi-night-sprinkle  {
  content: url("/css/icons/current/wsymbol_0025_light_rain_showers_night.png");
}
.weather_current .wi-night-storm-showers  {
  content: url("/css/icons/current/wsymbol_0026_heavy_rain_showers_night.png");
}
.weather_current .wi-night-thunderstorm  {
  content: url("/css/icons/current/wsymbol_0032_thundery_showers_night.png");
}

HTH & good luck!
Ralf

@crowimu
I‘m not using this module and I do not know which of GPIO‘s you are using for your rotary encoder -
In the module‘s description the author mentioned an eventually necessary modification for some of the PI‘s:

On some Raspberry Pis it is neccesary to put the following line to /boot/config.txt for the GPIO where "rotary press (SW)" is connected:

gpio=19=ip,pu

Background: Sets your GPIO 19 as input (ip) and pull up (pu) Change the entry according to the GPIO pin you use.

Have you double checked this?
Your error-listing shows „invalid argument , write“ in some context to GPIO…
May there is a topic for further investigation….

Good luck!
Regards,
Ralf

@viktorzonix again 404 … Yesterday it was visible - for a short time.
Unfortunately I’ve missed to clone :-(

@LuckyDucker - something is really strange with your github …

Regards,
Ralf

@Jose1701 Dear Jose,
you are referring to my post but may I’m the wrong person.
You may ask the developer, @xIExodusIx, too.

As I’m not knowing exactly what your problem is, I just can guess what’s going on…
from configuration perspective I do not see an issue - mine is similar.
As I wrote before I only have ‘MMM-FRITZ-Box-Callmonitor-py3’ in use, NOT ‘MMM-Callmonitor-Current-Call’,

For ‘MMM-FRITZ-Box-Callmonitor-py3’ I’m aware of some problems, but I do not know if this aligns with your problems.

• do you have the right (actual) fork? in my case this was https://github.com/xIExodusIx/MMM-FRITZ-Box-Callmonitor-py3.git
• I’m not sure if this is correct: In your config a username is missing. As far as I’m aware of you have to use a username/password combination - therefore I remember that I had to create a separate user for using the module.
• there were some requirements for the module - some python libraries as I remember correctly. - Do you have installed them in a proper version?

This is the “guessing” version.
If you could describe the “problem” more exact or concrete may we get other ideas…

Good luck!
Regards,
Ralf

@chris1971 This is quite strange!
Opening of config.js is (AFAIK) non-blocking and doesn’t cause any interaction with the displayed modules.
If you are using Sam’s installation saving config.js should cause a mirror-restart. This is the only interaction between config.js and “Display” I’m aware of.
Is the “correct” displayed newsfeed on the remote desktop, too?
Then this sounds like a browser problem.
In the past I’ve learned that every browser instantiates it’s own session.
(I HAD the meaning that this ist kind of “mirrored” but this was wrong).
I’ve especially seen this on my mirror within the newsfeed module: If you start two browsers the displayed information is NOT synchrone!
So may only your normal browser got a hickup…
-> no idea, why, sorry.

Warmest regards,
Ralf

@chris1971 I often get this message when internet connection isn‘t available…

• are you online in the moment the module will come up?
  Your reload interval is at 60.000 - so you may have to wait these 10 minutes and you will see data if internet connection appears in the meantime.
  Config looks OK to me…

Good luck!
Ralf

@alexa123 as already stated Pi5 is kind of oversized.
I had build up two identical mirrors - one for me and later on a second one (a clone) for a fried of mine.
My own is on a Pi5/8GB which was always hot and the power supply was hot as well - which led to some major modifications in my mirror setup because I had to move the power supply out of the frame - which was not that easy, annoying and unsatisfying…
The ONLY fact that IS useful and is an argument for the Pi5 is the really smooth integration of a NVME SSD disk which I had performed and am happy with. The fan on the pi5 is HUGE ! (NOT the „official Pi 5 fan“ tiny thingi which isn’t sufficient). Picture of fan

The second mirror (clon) is software-wise nearly identical but is installed on a (spare) Pi4 which layed around so it was no problem to overhand it to my friend. This is performance/capacity wise identical and MUCH colder. The SD-card reliability problem on this Pi4 is solved with an USB-SSD-Stick.

Today I might go for the Pi4 again…

Good luck!
Ralf

@Rags as @alex2 described: Try to use the menu / configuration tool.
Easiest and safest way with connected monitor/mouse/keyboard. If not possible give VNC a try - this could be harder because if screen resolution is not right, menu windows/dialog-boxes are hard to find/use…

The menu optiions do all the entries for you and these changes are persitant.

Godd luck,
regards,
Ralf

@Hobbes-0 Dear Dirk,
This is „normal“ behaviour with VNC…
Some other PIR modules (especially Bugsounet‘s MMM-Pir) solved this with placing a mouse-sensitive layer on the GUI and mouse click in VNV wakes the screen.
AFAIK this is not true for MMM-Universal-Pir.

Regards,
Ralf

@karsten13 said

trixie: gpiomon -e rising -c 0 23

You could try Karsten‘s suggestion…
Replace your configs gpioCommand with the suggested one and check what happens…
As I had assumed in my earlier post it‘s may related more to gpio than to HDMI …

Regards,
Ralf

@Hobbes-0 I would invest in direction of GPIO…
As I’ve experienced GPIO in bookworm was strongly different as in earlier version - may this applies to Trixie as well?
If monitor “awakes” suddenly this seem not to be a problem of HDMI-commands ?

Sorry cannot advice more concrete - I#m still on bookwork, not Trixie.

Good luck!

Ralf

In addition: It’s possible that the old recovery script was part of my problems - due to the above mentioned ping problem.
For this reason I’ve edited my earlier post and deleted the content of the script.
I’ve added an “edit note” instead.
Sorry for confusion and any inconvenience!

Regards,
Ralf

Dear @schlomm , team,

as I learned today sometimes system limitations are hard and leads to unwanted results.
I even got more serioous trouble with my pi and his WIFI so I had to dig in deeper.
The aproach until now - because of “growing” up - is a “recovery” and a “diagnose” part.
This leads to - surprise, surprise :-) - inconsistent data and so dignosis is merely impossible.
For this reason I converged both approches into one script and implemented a 4-stages error-handling and consecutive escalation (until reboot).

At this stage i had to recognize: almost EVERY test results immediatly in an error at stage 1 (ping) and was resolved at stage 2 (L2/L3 - ICMP problem – checking status of wlan interface).
To identify root cause for this I - again - dig down deeply (ChatGPT was NOT that helpful!) and found: At systemd level (on my system!?) ping is not in PATH !!!
So a fully qualified call solved this problem - and most of my “problems” are solved !

If you are using “ping”, too and stuck in problems in scripts - keep this in mind: “usr/bin/ping” might be really helpful for you.

If you are interested in, here my current recovery-script - including some useful logging information:

/usr/local/bin/wlan-recovery.sh
#!/bin/bash
# ============================================================================
# WLAN Recovery Script (Monolithische Version)
# Autor: Dr.  Ralf Korell, MD 
# Datum: 2025-10-07
#
# Dieses Script wird per systemd-Timer regelmäßig aufgerufen.
# Es prüft die WLAN-Verbindung in mehreren Stufen und führt nur dann
# Recovery-Aktionen aus, wenn wirklich eine Unterbrechung vorliegt.
#
# Features:
#   - Mehrstufige Diagnose (Ping, iw, IP, Route)
#   - Schutz vor Fehlalarmen und Selbstabschüssen
#   - SSH/VNC-Safe-Mode (keine Unterbrechung aktiver Sessions)
#   - Logrotation + Statistikdatei
# ============================================================================

# === Konfiguration ==========================================================
LOGFILE="/var/log/wlan-recovery.log"
STATSFILE="/var/log/wlan-recovery.stats"
MAX_LOG_SIZE=50000              # ~50 KB, dann Logrotation
PING_TARGET="172.23.56.1"
MAX_CONSECUTIVE_FAILS=2         # bevor Recovery startet
COOLDOWN_FILE="/tmp/wlan-recovery.cooldown"
COOLDOWN_MINUTES=5

# interne Speicherorte (nicht verändern)
STATEFILE="/tmp/wlan-recovery.state"
DATE_NOW=$(date "+%Y-%m-%d %H:%M:%S")

# === Hilfsfunktionen ========================================================

log() {
    echo "$DATE_NOW: $1" | tee -a "$LOGFILE"
}

rotate_log() {
    if [ -f "$LOGFILE" ] && [ $(wc -c <"$LOGFILE") -gt $MAX_LOG_SIZE ]; then
        mv "$LOGFILE" "$LOGFILE.old"
        echo "$DATE_NOW: Log rotated." > "$LOGFILE"
    fi
}

increment_stat() {
    local key="$1"
    local value
    value=$(grep "^$key=" "$STATSFILE" 2>/dev/null | cut -d= -f2)
    value=$((value + 1))
    grep -v "^$key=" "$STATSFILE" 2>/dev/null > "${STATSFILE}.tmp"
    echo "$key=$value" >> "${STATSFILE}.tmp"
    mv "${STATSFILE}.tmp" "$STATSFILE"
}

cooldown_active() {
    if [ -f "$COOLDOWN_FILE" ]; then
        local last=$(date -r "$COOLDOWN_FILE" +%s)
        local now=$(date +%s)
        local diff=$(( (now - last) / 60 ))
        [ $diff -lt $COOLDOWN_MINUTES ]
    else
        return 1
    fi
}

start_cooldown() {
    touch "$COOLDOWN_FILE"
}

ssh_or_vnc_active() {
    ss -tn state established | grep -Eq '(:22|:5900)'
}

# === Diagnosefunktionen =====================================================

is_connected_l2() {
    iw dev wlan0 link 2>/dev/null | grep -q "Connected to"
}

has_ip_l3() {
    ip -4 addr show wlan0 2>/dev/null | grep -q "inet "
}

has_route() {
    ip route get "$PING_TARGET" 2>/dev/null | grep -q "dev wlan0"
}

ping_ok() {
    /usr/bin/ping -I wlan0 -c 3 -W 2 "$PING_TARGET" >/dev/null 2>&1
}

# === Hauptlogik =============================================================

rotate_log

# Init Statsfile falls nicht vorhanden
[ -f "$STATSFILE" ] || echo -e "success=0\nrecoveries=0\nfailures=0" > "$STATSFILE"

# Lese bisherigen Fehlerzähler
fails=0
[ -f "$STATEFILE" ] && fails=$(cat "$STATEFILE")

# Diagnose
if ping_ok; then
    log "Ping erfolgreich. WLAN funktioniert."
    echo 0 > "$STATEFILE"
    increment_stat "success"
    exit 0
fi

# Wenn Ping fehlschlägt → weitere Prüfungen
log "Ping fehlgeschlagen → erweiterte Diagnose..."

if is_connected_l2 && has_ip_l3 && has_route; then
    log "L2/L3 ok → ICMP-Problem (kein Recovery)."
    increment_stat "failures"
    echo 0 > "$STATEFILE"
    exit 0
fi

# Hier gilt: echte Verbindung gestört
fails=$((fails + 1))
echo "$fails" > "$STATEFILE"

if [ $fails -lt $MAX_CONSECUTIVE_FAILS ]; then
    log "Erster Fehler ($fails/$MAX_CONSECUTIVE_FAILS) → Beobachten..."
    increment_stat "failures"
    exit 0
fi

# Wenn Cooldown läuft → überspringen
if cooldown_active; then
    log "Cooldown aktiv → Recovery übersprungen."
    exit 0
fi

# === Recovery-Stufen ========================================================

if ssh_or_vnc_active; then
    log "SSH/VNC aktiv → keine Recovery ausgeführt, nur geloggt."
    increment_stat "failures"
    exit 0
fi

log "Verbindung tatsächlich gestört → Recovery-Prozess gestartet."
increment_stat "recoveries"

# Stufe 1: sanfte Reassoziation
log "→ Stufe 1: wpa_supplicant Reassoziation..."
wpa_cli -i wlan0 reassociate >/dev/null 2>&1
sleep 5
if ping_ok; then
    log "Reassoziation erfolgreich."
    echo 0 > "$STATEFILE"
    start_cooldown
    exit 0
fi

# Stufe 2: Interface Toggle
log "→ Stufe 2: Interface Toggle..."
ip link set wlan0 down
sleep 2
ip link set wlan0 up
sleep 8
if ping_ok; then
    log "Interface Toggle erfolgreich."
    echo 0 > "$STATEFILE"
    start_cooldown
    exit 0
fi

# Stufe 3: Treiber-Reload
log "→ Stufe 3: Treiber-Reload..."
modprobe -r brcmfmac && modprobe brcmfmac
sleep 10
if ping_ok; then
    log "Treiber-Reload erfolgreich."
    echo 0 > "$STATEFILE"
    start_cooldown
    exit 0
fi

# Wenn alles fehlschlägt
log "Alle Recovery-Stufen fehlgeschlagen → Fehler bleibt bestehen."
increment_stat "failures"
start_cooldown
exit 1

[EDIT: in script above: changed ping count from -c 1 to -c 3 in:
/usr/bin/ping -I wlan0 -c 1 -W 2 “$PING_TARGET” >/dev/null 2>&1
]
Warmest regards,
Ralf