feat: Add Waveshare e-paper HAT display support #6
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Implements e-paper display service for single-board computers with Waveshare 2-color e-paper HAT. Displays system stats, health status, and bird detections with animation effect for new detections. Features: - System statistics (CPU, memory, disk usage) - Health status from health check API - Latest bird detection display - 3-frame animation cycle for new detections - Simulation mode (saves PNG when no hardware) - Optional dependency group for platform-specific libraries Configuration: - enable_epaper_display: Enable/disable service - epaper_refresh_interval: Update frequency in seconds - epaper_display_type: Display model identifier Tests: 22 new test cases (75% coverage on service, 95% on daemon)
…ment - Add birdnetpi-epaper-display.service to systemd service configuration - Add epaper-display service to SBC services list in system_control.py - Mark service as optional since not all SBCs have e-paper HAT - Service will appear in logs page and service control page automatically
- Path resolver fixture may already create data directory - Prevents FileExistsError in CI
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After rebase on main, the data directory is created earlier by fixtures, causing mkdir to fail without exist_ok flag.
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Summary
This PR adds support for Waveshare e-paper HAT displays, enabling BirdNET-Pi to show recent detections on low-power e-ink screens.
Key Features
Supported Hardware
Technical Details
New Components
EpaperDisplayService: Core display management with Pillow-based renderingepaper_display_daemon.py: Background daemon for periodic updatesSystemControlServicefor service lifecycleDisplay Layout
Configuration
Files Changed
src/birdnetpi/display/Testing
Dependencies
Added
pillowandRPi.GPIOfor e-paper HAT support (optional dependencies, only needed when feature is enabled).Breaking Changes
None - this is an optional feature that must be explicitly enabled.