Dual Display Billboard for scale modellers

ESP32/ESP32-S3 Digital Billboard with Image Management

Dual display billboard system designed for scale modelers, featuring WiFi connectivity, image slideshow capabilities, multiple clock faces.

Key Features

Dual Display Support

• Independent control of two ST7735 (160x80) displays
• ST7789 (240x240) compatibility
• Hardware-specific pin mapping for ESP32 and ESP32-S3
• Content-aware rotation settings

Image Management

• 10-image maximum limit for optimal memory management
• JPEG validation with dimension checking
• 50KB per image size limit
• Automatic storage monitoring
• User-friendly error reporting

Multiple Clock Faces

• Modern Square: Rounded border analog design with colored hands
• Classic Analog: Traditional analog clock with hour markers
• Digital Modern: Large font digital display
• Minimalist: Clean, simple time display

WiFi & Web Management

• Captive portal setup for easy configuration
• WiFi network scanning and connection
• Web-based image upload interface
• Real-time system status monitoring

Code Architecture

• Configurable logging system (ERROR/WARN/INFO levels)
• Memory management and error handling
• Modular component design

Documentation

This project features comprehensive documentation generated from Doxygen-style annotations:

API Documentation

User Guides

• Unicode Character Support Guide - How to add support for new international characters
• Hardware Connections - Wiring and setup instructions
• Timezone Customization - Configure timezone settings

Code Documentation

• 235+ documented methods across 13 implementation files
• 19 fully documented header files with complete API reference
• Doxygen formatting with @brief, @param, @return tags
• Cross-references and usage examples throughout