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Three independent fixes found while validating every plugin on a 256x64 rig. FontManager never registered tom_thumb even though assets/fonts/tom-thumb.bdf ships with the core, so every plugin offering it logged "Font family 'tom_thumb' not found" (16 warnings per countdown render) and had to carry a private loader to use a bundled font. Closes #524. VisualTestDisplayManager.set_scrolling_state() lacked the frame_hold parameter that DisplayManager gained, so any plugin passing it died with TypeError at render time and failed every size. Nine plugins now make that call; ledmatrix-stocks and ledmatrix-leaderboard were failing outright and the other seven only passed because their scroll path was unreachable without data. Closes #525. api_v3 declared module-level config_manager/plugin_manager = None that nothing ever assigned -- app.py sets the blueprint attributes, which the other 150+ call sites use. Three sites read the decoys, so /health reported the config unreadable and the plugin system uninitialised (making "degraded" permanent and unreachable-by-design) and /display/current fell back to a hardcoded 128x64 on every rig. The decoys are removed rather than assigned, so a bare name is now a NameError at test time instead of a silent None. The same function's first-call uptime was computed from two separate clock reads and came out negative. Closes #529. Verified on the rig: both previously-failing plugins render, the tom_thumb warnings are gone, /health reports "healthy" with all three checks passing, and /display/current reports the real 256x64.
LED Matrix Web Interface V3
Modern, production web interface for controlling the LED Matrix display.
Overview
This directory contains the active V3 web interface with the following features:
- Real-time display preview via Server-Sent Events (SSE)
- Plugin management and configuration
- System monitoring and logs
- Modern, responsive UI
- RESTful API
Directory Structure
web_interface/
├── app.py # Main Flask application
├── start.py # Startup script
├── run.sh # Shell runner script
├── requirements.txt # Python dependencies
├── blueprints/ # Flask blueprints
│ ├── api_v3.py # API endpoints
│ └── pages_v3.py # Page routes
├── templates/ # HTML templates
│ └── v3/
│ ├── base.html
│ ├── index.html
│ └── partials/
└── static/ # CSS/JS assets
└── v3/
├── app.css
├── app.js
├── manifest.json # PWA manifest
├── plugins_manager.js
├── icons/ # PWA / touch icons
├── js/ # Alpine, htmx, app shell, widgets, utils
└── vendor/ # codemirror, fontawesome
Running the Web Interface
Standalone (Development)
From the project root:
python3 web_interface/start.py
Or using the shell script:
./web_interface/run.sh
As a Service (Production)
The web interface can run as a systemd service that starts automatically based on the web_display_autostart configuration setting:
sudo systemctl start ledmatrix-web
sudo systemctl enable ledmatrix-web # Start on boot
Accessing the Interface
Once running, access the web interface at:
- Local: http://localhost:5000
- Network: http://:5000
Configuration
The web interface reads configuration from:
config/config.json- Main configurationconfig/config_secrets.json- API keys and secrets
API Documentation
The V3 API is mounted at /api/v3/ (app.py:144). For the complete
list and request/response formats, see
docs/REST_API_REFERENCE.md. Quick
reference for the most common endpoints:
Configuration
GET /api/v3/config/main- Get main configurationPOST /api/v3/config/main- Save main configurationGET /api/v3/config/secrets- Get secrets configurationPOST /api/v3/config/raw/main- Save raw main config (Config Editor)POST /api/v3/config/raw/secrets- Save raw secrets
Display & System Control
GET /api/v3/system/status- System statusPOST /api/v3/system/action- Control display (action body:start_display,stop_display,restart_display_service,restart_web_service,git_pull,reboot_system,shutdown_system,enable_autostart,disable_autostart)GET /api/v3/display/current- Current display frameGET /api/v3/display/on-demand/status- On-demand statusPOST /api/v3/display/on-demand/start- Trigger on-demand displayPOST /api/v3/display/on-demand/stop- Clear on-demand
Plugins
GET /api/v3/plugins/installed- List installed pluginsGET /api/v3/plugins/config?plugin_id=<id>- Get plugin configPOST /api/v3/plugins/config- Update plugin configurationGET /api/v3/plugins/schema?plugin_id=<id>- Get plugin schemaPOST /api/v3/plugins/toggle- Enable/disable pluginPOST /api/v3/plugins/install- Install from registryPOST /api/v3/plugins/install-from-url- Install from GitHub URLPOST /api/v3/plugins/uninstall- Uninstall pluginPOST /api/v3/plugins/update- Update plugin
Plugin Store
GET /api/v3/plugins/store/list- List available registry pluginsGET /api/v3/plugins/store/github-status- GitHub authentication statusPOST /api/v3/plugins/store/refresh- Refresh registry from GitHub
Real-time Streams (SSE)
SSE stream endpoints are defined directly on the Flask app
(app.py:607-619 — includes the CSRF exemption and rate-limit hookup
alongside the three route definitions), not on the api_v3 blueprint:
GET /api/v3/stream/stats- System statistics streamGET /api/v3/stream/display- Display preview streamGET /api/v3/stream/logs- Service logs stream
Development
When making changes to the web interface:
- Edit files in this directory
- Test changes by running
python3 web_interface/start.py - Restart the service if running:
sudo systemctl restart ledmatrix-web
Notes
- Templates and static files use the
v3/prefix to allow for future versions - The interface uses Flask blueprints for modular organization
- SSE streams provide real-time updates without polling