Pixel Clock is a minimalist digital clock UI built using LVGL v9 on the ESP32-P4.
It displays pixel-style digits over a grid layout and includes a hidden snake animation mode to bring life to your embedded screen — all optimized for real-time performance and ease of integration.
Designed for LVGL-ready environments. Just configure your display and grid, and you're ready to run.
- Pixel-style digits using a 3×5 font layout on a tile grid
- Blinking colon that toggles every second
- Optimized redraw — updates only the digits that change
- Tap interaction — trigger random colorful falling tiles
- Snake game mode:
- Triggers randomly during idle
- Green snake moves toward red tile
- Snake disappears on contact, restoring clock UI
- ESP32-P4 (ESP-IDF framework)
- LVGL v9
- Modular C code
- Simple grid logic (19×9 by default)
main/
├── include/
│ ├── digit_font.h
│ ├── global.h
│ └── snake.h
├── ui_resources/
│ ├── digit_font.c
│ ├── global.c
│ └── snake.c
├── main.cpp
(Add your screenshots or YouTube demo link here)
- Adjust grid resolution:
#define GRID_ROWS 9 #define GRID_COLS 19
- Modify fonts in
digit_font.h - Change snake speed, style, or colors in
snake.c - Use LVGL’s animation features to add your own flair
- ESP32 board (This project was tested on the ESP32-P4 board.)
- Display compatible with LVGL (800×1280 tested)
- Optional: GT911 capacitive touch panel
MIT License
(c) 2025 Eric Nam
Simple. Playful. Pixel-perfect.