/* custom.css */

/* Passt die Gesamtbreite des gesamten Moduls an */
.MMM-HoymilesPVMonitor {
    /* Beispiel: Setzt die maximale Breite des gesamten Moduls auf 200 Pixel */
    max-width: 200px; 
    /* Stellt sicher, dass das Modul zentriert bleibt, falls es kleiner als die Spalte ist */
    margin-left: auto;
    margin-right: auto;
}

/* 
  Passt den inneren Container an, der das Canvas-Diagramm enthält.
  Dies überschreibt die 95% Breite, die im JS definiert wurde.
*/
.MMM-HoymilesPVMonitor div:first-child {
    /* 
      Setzt die Breite des Containers auf 100% der oben definierten max-width (z.B. 200px).
      Sie können hier auch absolute Werte (z.B. 180px) verwenden, 
      aber 100% ist am flexibelsten.
    */
    width: 100% !important; 
}

Now it is smaller, nevertheless I can’t get it much more smaller because the gauge will disappear then.

(It’s not displayed correctly in the screenshot, but it is on my mirror.)

Sometimes it’s all grunt work….

ok. Thank you for your patience and help.

No, sorry, no idea.
What Sam says, but that needs knowledge.
But I opened an issue/request, so let’s see if it will be granted:
https://github.com/CuddlyCow/MMM-HoymilesPVMonitor/issues

logger
code execution
and elements viewer, css tester env

see the second link in my signature below for a starter course on the elements tab.

Alright, I will try to get some info in the internet. Never done sth with css.

Thanks

width: "100px",
height: "105px",

those are outside the config:{} section, that means they are for the MM runtime…
but we don’t process width/height

if you want to do this you need to learn to use css(cascading style sheet) to customize the html presentation
ALL updated css goes in css/custom.css

a css entry in custom.css is

selector_clause {
   styles to apply to elements selected by the selector clause
}

we add the modulename as a class to the web content so that one can ‘select’ only for that module

key selector clause elements
starts with . means element has classname=xxx
starts with # means element has id=xxxx
does not start with either, means html element name, div, span, p, h1, img…

Great job! It could work for me. Unfortunately it’s dark outside but I can see the gauge on my mirror.

I don’t even dare to ask, but do you have a hint how about resizing it? I tried it with width and height but it won’t work.

 {
    module: "MMM-HoymilesPVMonitor",
    disabled: false,
    header: "PV Monitor",
    position: "top_left",
    width: "100px",
    height: "105px",
    config: {
      dtuIp: "192.168.178.150",        // IP address of your Hoymiles DTU
      maxPower: 800,                  // Maximum system power in watts
      updateInterval: 5 * 60 * 1000   // Update interval in milliseconds (default: 5 minutes)
    }
  },

Many thanks and kind regards

Florian

Remove the old module from the config:

$ vi ~/MagicMirror/config/config.js

Remove the "MMM-Hoymiles-Wifi" config, or set:

    module: "MMM-Hoymiles-Wifi"
    disabled: true,

Delete HoymilesWifi from pm2:

$ pm2 stop HoymilesWifi
$ pm2 delete HoymilesWifi
$ pm2 save

If desired, completely remove the old module:

$ cd ~/MagicMirror/modules/
$ rm -rf MMM-Hoymiles-Wifi

Install MMM-HoymilesPVMonitor:

$ cd ~/MagicMirror/modules

$ git clone https://github.com/CuddlyCow/MMM-HoymilesPVMonitor.git

$ cd MMM-HoymilesPVMonitor

$ git branch
* main

$ git remote -v
origin	https://github.com/CuddlyCow/MMM-HoymilesPVMonitor.git (fetch)
origin	https://github.com/CuddlyCow/MMM-HoymilesPVMonitor.git (push)

$ which hoymiles-wifi
/home/admin/.local/bin/hoymiles-wifi

$ echo $PATH
/home/admin/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games

$ vi ~/MagicMirror/config/config.js

  {
    module: "MMM-HoymilesPVMonitor",
    disabled: false,
    header: "PV Monitor",
    position: "top_left",
    config: {
      dtuIp: "192.168.178.50",        // IP address of your Hoymiles DTU
      maxPower: 800,                  // Maximum system power in watts
      updateInterval: 5 * 60 * 1000   // Update interval in milliseconds (default: 5 minutes)
    }
  }


$ grep 'dtuIp' ~/MagicMirror/config/config.js
      dtuIp: "192.168.178.50",        // IP address of your Hoymiles DTU


$ ls -als public/history_daily.json
4 -rw-r--r-- 1 admin admin 115 Nov  6 08:47 public/history_daily.json

$ cat public/history_daily.json
[
  {
    "timestamp": "2025-11-06 08:47",
    "power": 40,
    "energy_daily": 0.03,
    "energy_total": 0.8
  }

$ pm2 flush

$ pm2 restart MagicMirror

$ pm2 status MagicMirror
┌────┬────────────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name           │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├────┼────────────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0  │ MagicMirror    │ default     │ 2.33.0  │ fork    │ 26202    │ 4m     │ 3    │ online    │ 0%       │ 2.1mb    │ admin    │ enabled  │
└────┴────────────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘

$ pm2 logs MagicMirror --lines 100

0|MagicMir | [2025-11-06 08:47:43.474] [INFO]  [MMM-HoymilesPVMonitor.js:17:9] MMM-HoymilesPVMonitor started with DTU-IP: 192.168.178.50
:
:
0|MagicMir | [2025-11-06 08:47:49.226] [LOG]   [MMM-HoymilesPVMonitor] Running Python script: python3 /home/admin/MagicMirror/modules/MMM-HoymilesPVMonitor/dtu_data.py --ip 192.168.178.50 --max 800 --out /home/admin/MagicMirror/modules/MMM-HoymilesPVMonitor/public/history_daily.json
0|MagicMir | [2025-11-06 08:47:51.682] [LOG]   [MMM-HoymilesPVMonitor] Python script output: [WARNING] Could not load history: Expecting value: line 2 column 1 (char 1)
0|MagicMir | [2025-11-06 08:47] [INFO] Live DTU data appended: {'timestamp': '2025-11-06 08:47', 'power': 40, 'energy_daily': 0.03, 'energy_total': 0.8}
:
:
0|MagicMir | [2025-11-06 08:52:42.141] [LOG]   [MMM-HoymilesPVMonitor] Running Python script: python3 /home/admin/MagicMirror/modules/MMM-HoymilesPVMonitor/dtu_data.py --ip 192.168.178.50 --max 800 --out /home/admin/MagicMirror/modules/MMM-HoymilesPVMonitor/public/history_daily.json
0|MagicMir | [2025-11-06 08:52:43.287] [LOG]   [MMM-HoymilesPVMonitor] Python script output: [2025-11-06 08:52] [INFO] Live DTU data appended: {'timestamp': '2025-11-06 08:52', 'power': 41, 'energy_daily': 0.03, 'energy_total': 0.8}

$ cat public/history_daily.json
[
  {
    "timestamp": "2025-11-06 08:47",
    "power": 40,
    "energy_daily": 0.03,
    "energy_total": 0.8
  },
  {
    "timestamp": "2025-11-06 08:52",
    "power": 41,
    "energy_daily": 0.03,
    "energy_total": 0.8
  }

Tested on:

$ cat /proc/device-tree/model; echo
Raspberry Pi 3 Model B Plus Rev 1.3

$ vcgencmd get_config total_mem
total_mem=1024

$ grep version ~/MagicMirror/package.json
	"version": "2.33.0",

Yeah, stopped is not good.
I will need to get it working myself before I can give more useful information on what to check.
Will keep you posted.

Okay. But in the end I can’t get it to work. Don’t know whats wrong …

Does this has to do with that:

florian@raspberrypi:~ $ pm2 restart MagicMirror
Use --update-env to update environment variables
[PM2] Applying action restartProcessId on app [MagicMirror](ids: [ 0 ])
[PM2] [MagicMirror](0) ✓
┌────┬─────────────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name            │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├────┼─────────────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 1  │ HoymilesWifi    │ default     │ 2.33.0  │ fork    │ 3691100  │ 0      │ 367… │ stopped   │ 0%       │ 0b       │ florian  │ disabled │
│ 0  │ MagicMirror     │ default     │ 2.33.0  │ fork    │ 3691094  │ 0s     │ 3    │ online    │ 0%       │ 3.0mb    │ florian  │ enabled  │
└────┴─────────────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
florian@raspberrypi:~ $

>> You installed that already, so no need to install it again.
>>The schris88 requirements.txt contains the hoymiles-wifi package.

If you want to repeat it under the new module name, then you will need to copy the requirements.txt file from the previous module.
But again, since you already did this, no need to repeat.

By unsing this, I get the following error:

python -m pip install -r requirements.txt --break-system-packages

Defaulting to user installation because normal site-packages is not writeable
ERROR: Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'

You installed that already, so no need to install it again.
Probably using:

python -m pip install -r requirements.txt --break-system-packages

The schris88 requirements.txt contains the hoymiles-wifi package.

Well I tried that but I’m to silly to install it.

florian@raspberrypi:~/MagicMirror/modules/MMM-Hoymiles-Wifi $ pip3 install hoymiles-wifi
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    For more information visit http://rptl.io/venv

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.


florian@raspberrypi:~/MagicMirror/modules/MMM-Hoymiles-Wifi $ sudo apt install python3 hoymiles-wifi
Error: Unable to locate package hoymiles-wifi
florian@raspberrypi:~/MagicMirror/modules/MMM-Hoymiles-Wifi $

* master
origin  https://github.com/schris88/MMM-Hoymiles-Wifi (fetch)
origin  https://github.com/schris88/MMM-Hoymiles-Wifi (push)

I used the ~ symbol.

You also might try this module:

https://github.com/CuddlyCow/MMM-HoymilesPVMonitor

I may give it a try myself.

First of all, where I write

/home/admin/

please use

~/

(tilde sign)

And can you please send me:

cd ~/MagicMirror/modules/MMM-Hoymiles-Wifi
git branch
git remote -v

Every time you get that port in use error, run the long command to see what programs are using the port.
And of course do not use HoymilesWifi.sh when it is also active under pm2.

I am starting to wonder if the module works at all.
I finally got a picture, but it showed an error in it.

Im getting this:

python hoymiles_data.py --dtu_ip_address 192.168.178.150 --max 800

 grep 'dtu_ip_address' Hoymiles-Wifi.sh

$ hoymiles-wifi --host 192.168.178.50 identify-inverters

This works:

Identify-inverters Response:
{'1412a015f1e3': 'HMS-800W/1000W-2T'}

After that: ./HoymilesWifi.sh

 * Serving Flask app 'hoymiles_data'
 * Debug mode: off
Address already in use
Port 5000 is in use by another program. Either identify and stop that program, or start the server with a different port.

$ grep ‘dtu_ip_address’ HoymilesWifi.sh

Until that line everything is ok. After that it says:

grep: HoymilesWifi.sh: No such file or directory

I used
https://github.com/schris88/MMM-Hoymiles-Wifi/
and all the above is correct and running.

A year ago I made a fork and made some changes, of which I think are present in the schris88 version as well.

https://github.com/evroom/MMM-Hoymiles-Wifi/
I will give this one a try when I have time.

PS: it seems that when the microinverter is off-line, you will not see anything. Need to wait for it to be active again.