PicoSudoku
A microcontroller-powered Sudoku game, designed for the Raspberry Pi Pico 2
Author: Ionescu Mihai-Cosmin
GitHub Project Link: https://github.com/UPB-PMRust-Students/proiect-COSSS02
Description
This project aims to provide a simple and engaging way to play the classic logic game Sudoku, featuring three difficulty levels. The game grid is displayed on an LCD screen connected to a Raspberry Pi Pico 2 microcontroller. The user can interact with the game using intuitive hardware controls: a joystick for navigating between cells and a keypad for number input. The system includes input validation to ensure correct moves.
Motivation
This project combines my passion for logic puzzles with the challenge of creating a clean, self-contained implementation. Sudoku's structured nature makes it an ideal candidate for an embedded environment project.
Architecture
Hardware
The project uses four main hardware components: a Raspberry Pi Pico 2 as the microcontroller, a 2.8-inch ST7789 SPI TFT LCD to display the Sudoku grid, a 3x4 matrix keypad for number input, and a dual-axis XY joystick for navigating between cells.
Bill of Materials
| Device | Usage | Price |
|---|---|---|
| Raspberry Pi Pico 2 | The microcontroller | 42 RON |
| 2.8 Inch ST7789 LCD | The display | 38 RON |
| 3X4 Matrix Switch Keypad | The keypad | 12 RON |
| Dual-axis XY Joystick Module | The joystick | 8 RON |
Software
| Library | Description | Usage |
|---|---|---|
| embassy-rp | Raspberry Pi Pico HAL | GPIO, SPI, ADC setup |
| embassy-sync | Synchronization primitives | Mutex for SPI bus |
| embassy-time | Time handling mechanisms | Measure Game Runtime |
| mipidsi | Crate for generic display drivers | Display driver for ST7789 |
| embedded-graphics | 2D graphics library | Drawing primitives to the display |