https://github.com/aschuma/max7219-led-matrix-clock-mqtt-display

Visualizes MQTT events on a Max7219 led matrix / raspberry pi (https://youtu.be/OGFmESPtSfg)
https://github.com/aschuma/max7219-led-matrix-clock-mqtt-display

iot max7219 mqtt python raspberry-pi

Last synced: 5 days ago
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Visualizes MQTT events on a Max7219 led matrix / raspberry pi (https://youtu.be/OGFmESPtSfg)

• Host: GitHub
• URL: https://github.com/aschuma/max7219-led-matrix-clock-mqtt-display
• Owner: aschuma
• License: mit
• Created: 2020-12-27T20:39:43.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2023-10-04T00:51:11.000Z (about 1 year ago)
• Last Synced: 2024-10-10T22:36:52.658Z (26 days ago)
• Topics: iot, max7219, mqtt, python, raspberry-pi
• Language: Python
• Homepage:
• Size: 274 KB
• Stars: 4
• Watchers: 3
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: Readme.md
  • License: LICENSE

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README

        
# Visualizes MQTT events on an 8 x MAX7219 8x8 led matrix / raspberry pi w

Here is what you get when you deploy the application on a PI / MAX7219 led matrix, please click on the image to see more.

[![Demo](https://github.com/aschuma/max7219-led-matrix-clock-mqtt-display/blob/main/img/max-display.jpg)](https://youtu.be/OGFmESPtSfg)

## Some hints for setting up the software and the hardware

* This project uses the luma led matrix driver coded by Richard Hull https://github.com/rm-hull/luma.led_matrix/blob/master/README.rst (Credits to Richard for his excellent work).

* For LED matrix setup/wiring, please consult https://luma-led-matrix.readthedocs.io/en/latest/install.html#pre-requisites, especially the section GPIO pin-outs MAX7219 Devices (SPI) 

* As Richard Hull mentiones in https://luma-led-matrix.readthedocs.io/en/latest/notes.html, you should consider to use a logic level converter to bridge the 3.3V (PI) <-> 5V (MAX7219) gap. I'am using https://www.amazon.com/Level-Conversion-Module-Sensor-Raspberry/dp/B07QC929R4/ref=sr_1_16?dchild=1&keywords=5V+3.3V+8-Kanal+Logic+Level+Converter+f%C3%BCr+Arduino+Raspberry+Pi&qid=1609707511&sr=8-16, but other bidirectional converter should work fine too.

* Checkout source code `git clone https://github.com/aschuma/max7219-led-matrix-clock-mqtt-display.git`

* Create a python 3 virtual environment

* Install 3rd party libraries defined in `requirements.txt`

* Copy `config.py.template` to `config.py` and adjust the settings

* Run the `__init__.py` script in the base directory   

* Submit MQTT events using `display/` as base path. The payload of the events should be like   

   ```

    {

        name : ,

        description: ,

        weight : ,

        value : ,

        unit : ,

        timestamp: 

    }

   ```