MMM-Growatt

Magic Mirror module for displaying Growatt inverter data.

This module utilises the Growatt npm package to pull data from the Growatt API and display as a simple table on the Magic Mirror.

Installation

• Install MagicMirror
• cd <MagicMirrorInstallation>/modules
• git clone https://github.com/dekinet/MMM-Growatt.git
• cd MMM-Growatt
• npm install

Configuration

There are a number of configuration options available:

Option	Default	Description
intervalSecs	300	Defines how often to poll the API for data. Don't do this too quickly, or your requests will be rejected by the server.
plantName	false	Display the plant name?
lastUpdated	true	Display the timestamp of the last time data was sent to the server by the inverter.
currentPower	true	Display the current power generated.
dayTotalGenerated	true	Display the amount of power generated today.
monthTotalGenerated	false	Display the amount of power generated this month.
totalGenerated	false	Display the total amount of power generated.

In addition, the MM config file must include you Growatt server username and password. There are no default values for these.

An entry in the module configuration file might look like this:

  {
    module: "MMM-Growatt",
    position: "top_right",
    config: {
      intervalSecs: 600,
      plantName: true,
      user: "my.username",
      password: "123456",
  },

Dependencies

• MagicMirror
• npm-growatt: Used to retrieve data from the Growatt API server.

Styling

A simple styles.css file is included. The generated data utilises the following classes:

Class Name	Used
growatt-data	The whole generated div
growatt-table	The table containing Growatt data
growatt-row	All rows in the table
growatt-cell	All cells in the table

Limitations

I only have access to one inverter, so recieved data from multiple interverters is not likely handled correctly. Fixes are welcome.