MMM-Hoymiles

MagicMirror module for Hoymiles Wifi inverter info

• This module shows current data for Hoymiles Wifi inverter with the help of the hoymiles-wifi python lib
• Project is based on https://github.com/ulrichwisser/MMM-HTMLSnippet
• The Inverter Data is fetched with https://github.com/suaveolent/hoymiles-wifi
• Whenever the widget refreshes, the flask server will call the python script which will render a html with the current data from holymiles-wifi

Project Status

This module is still under development.
It might not work, can show incorrect results, will lack some counters, etc.

Test environment:

• Micro Inverter: Hoymiles HMS-800W-2T with 2 panels connected
• MagicMirror version: 2.30.0-develop
• Raspberry Pi 4 Model B Rev 1.5
• Raspbian GNU/Linux 12 (bookworm)

TODO:

• get rid of external shell script
• change pv_data to dtu date for combined output of inverter
• add config options for DTU IP, PV-Power Range, Positioning, Size, Colors...
• add template if inverter is offline (currently only displays a text)

Installation

Installation can be done using the original repository or the develop repository.

Main master repository:

cd ~/MagicMirror/modules/
git clone https://github.com/schris88/MMM-Hoymiles-Wifi

Main develop repository:

cd ~/MagicMirror/modules/
git clone https://github.com/evroom/MMM-Hoymiles-Wifi

Config Example

Edit the file ~/MagicMirror/config/config.js to add or modify the module.

{
  module: "MMM-Hoymiles-Wifi",
  position: "top_left",
  config: {
    width: "300px",
    height: "320px",
    updateInterval: 60000, // in milli seconds
    frames : [
      { src: 'http://127.0.0.1:5000' },
    ]
  },
},

Hoymiles Example

Python Requirements

Install all Python requirements:

pip install -r requirements.txt

If you see this error:

error: externally-managed-environment

then try this:

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

Enter DTU IP address of DTU

Use you favorite editor to make the change (here nano).

nano HoymilesWifi.sh

Line to edit:

python hoymiles_data.py --dtu_ip_address <DTU_HOST_IP>

Where <DTU_HOST_IP> is the IP address of the DTU.

To turn on debugging:

python hoymiles_data.py --dtu_ip_address <DTU_HOST_IP> --debug

Start Flask server by running HoymilesWifi.sh or add it to pm2

To start HoymilesWifi.sh manually:

./HoymilesWifi.sh

To add HoymilesWifi.sh to pm2:

pm2 start HoymilesWifi.sh
pm2 save

Various checks

Verify hoymiles-wifi command:

hoymiles-wifi --host <DTU_HOST_IP> identify-inverters

Where <DTU_HOST_IP> is the IP address of the DTU.

When this message is printed, it means that the inverter is turned off (mostly after sunset):

No response or unable to retrieve response for identify-inverters

Check the HoymilesWifi status:

pm2 status
pm2 info HoymilesWifi

Check the HoymilesWifi log:

pm2 logs HoymilesWifi --lines 100

Make a test run, using a test dataset

Use you favorite editor to make the change (here nano).

nano HoymilesWifi.sh

Line to edit (add --debug --test):

python hoymiles_data.py --dtu_ip_address <DTU_HOST_IP> --debug --test

Where <DTU_HOST_IP> is the IP address of the DTU.

The test dataset is taken from response_test_data.json. Do not forget to remove --test after testing.