Minesweeper

Classic implementation of the minesweeper game where the goal is to reveal all the cells without hitting a mine.

info

Author: Dobrin David-Andrei
GitHub Project Link: https://github.com/UPB-PMRust-Students/proiect-ddavid03dda

Description

Classic implementation of the minesweeper game where the goal is to reveal all the cells without hitting a mine. Also several difficulty levels that increase the number of mines on the map. The player can see in a menu the battery status and select the difficulty before the game starts and then play until he loses or wins.

Motivation

It was a favorite game I used to play as a kid when the internet was down. I wanted to build a physical version I could keep around the house—complete with sounds and vibration—to give it a fresh, tactile feel.

Architecture

• Raspberry Pi Pico 2 W as central control unit, running the game logic in Rust.
• Vibration motor to signal when the player hits a mine (loss).
• Buzzer for sound effects—menu navigation, tile selection, win/loss alerts.
• ILI9341 LCD to display the menu, battery status, and game grid.
• Buttons for cursor movement, selection, and menu control.

Log ­#

Week 5 – 11 May

Week 12 – 18 May

Week 19 – 25 May

Hardware

1. Raspberry Pi Pico 2 W

   • Purpose: Main controller.
   • Function: Runs the Minesweeper game logic in Rust, reads button inputs, and drives the display, buzzer, and vibration motor.

2. Vibration Motor

   • Purpose: Haptic feedback.
   • Function: Vibrates briefly when the player uncovers a mine (loss).

3. Buzzer

   • Purpose: Audio feedback.
   • Function: Emits tones for menu navigation, tile reveals, and win/loss alerts.

4. ILI9341 LCD

   • Purpose: Visual interface.
   • Function: Displays the difficulty menu, battery status, game grid, and end-game messages.

5. Push-buttons (×5)

   • Purpose: User controls.
   • Function: Up, Down, Left, Right for cursor movement; Select for revealing tiles and confirming menu choices.

Hardware Overview

• The Raspberry Pi Pico 2 W orchestrates all inputs and outputs, executing the Minesweeper logic.
• Push-buttons let the player navigate menus and move the cursor across the minefield.
• The ILI9341 LCD renders the game grid, menus, and battery level in real time.
• The Buzzer provides immediate audio cues for safe tile reveals, mine hits, and victories.
• The Vibration Motor delivers a tactile buzz when a mine is uncovered, reinforcing the loss event.

Schematics

Bill of Materials

Device	Usage	Price
Raspberry Pi Pico 2 W	Main microcontroller	80 RON
Vibration motor module	Loss feedback vibration	15 RON
Colored wires male–male (40 × 10 cm)	Wiring between Pico and peripherals	5 RON
Colored wires male–female (40 × 15 cm)	Wiring sensor/buttons	8 RON
Colored wires female–female (40 × 15 cm)	Breadboard‐to‐module wiring	7 RON
Passive buzzer (3.3 V)	Sound effects	1 RON
NPN Transistor 2N2222 TO-92	Driving buzzer/vibration motor	0.17 RON
Breadboard HQ (400 pts)	Prototyping	4.50 RON
Resistor 0.25 W 2.2 kΩ	Current limiting	0.10 RON
Diode 1N4007	Flyback protection	0.50 RON
40-pin male header, 2.54 mm (×5)	GPIO breakout	5 RON
ILI9341 LCD (2.4″, SD slot)	Display	67 RON
Push-buttons × 5	User input	10 RON

Software

Library	Description	Usage
rp2040-hal	Hardware Abstraction Layer for Raspberry Pi Pico	GPIO, PWM, ADC, timers
embedded-hal	Common traits for embedded hardware access	Digital I/O, SPI bus, delay timers
embedded-graphics	2D graphics library for embedded displays	Rendering grid, menus, battery indicator
ili9341	ILI9341 TFT display driver	SPI communication with the LCD
panic-halt	Minimal panic handler	Halts MCU on unrecoverable errors
nb	Non-blocking I/O traits	Debouncing buttons, reading battery level