A fully functional, classic Tetris implementation built for the Arduino Mega, designed and simulated within the Wokwi environment. This project features a custom driver for a 16x32 LED matrix display, a 7-segment score tracker, and non-blocking sound effects.
- Hardware: 8x MAX7219 8x8 LED Matrices daisy-chained.
- Resolution: 16x32 pixels (Split across two 8x32 blocks).
- Custom Calibration Logic:
- Manages complex physical rotation (90° Left Block / 270° Right Block).
- Corrects non-standard wiring and gravity orientation issues.
- Flicker-Free Rendering: Implements conditional double-buffering for a smooth 60 FPS refresh rate.
- Tetrominos: Full implementation of all standard pieces (I, J, L, O, S, T, Z).
- Mechanics Included:
- Left/Right Movement
- Rotation (90° increments)
- Soft Drop (Fast Fall)
- Line Clearing & Gravity
- Game Over Detection
- Score Display: 4-digit 7-segment display controlled by 2x 74HC595 Shift Registers.
- Sound: Passive Buzzer with non-blocking tone generation (optimized not to halt the main loop).
- Input: Control handled via 4 push buttons, implemented with software debouncing.
| Component | Pin / Connection | Notes |
|---|---|---|
| LED Matrix (DIN) | Pin 11 | Data In |
| LED Matrix (CLK) | Pin 13 | Clock |
| LED Matrix (CS) | Pin 10 | Chip Select |
| Shift Register (DATA) | Pin 9 | 74HC595 DS |
| Shift Register (LATCH) | Pin 8 | 74HC595 STCP |
| Shift Register (CLOCK) | Pin 7 | 74HC595 SHCP |
| Buzzer | Pin 49 | Passive |
| Button (Rotate) | Pin 41 | Blue |
| Button (Left) | Pin 43 | Yellow |
| Button (Right) | Pin 45 | Green |
| Button (Drop) | Pin 47 | Red |
- Open the project in Wokwi.
- Upload the
Tetris.inofile. - Start the simulation.
- 🔵 Blue: Rotate Piece
- 🟡 Yellow: Move Left
- 🟢 Green: Move Right
- 🔴 Red: Fast Drop
Tetris.ino: The main source code containing the game engine, display driver, and hardware logic.LedControl.h: Library used for interfacing with the MAX7219 matrices.diagram.json: The Wokwi simulation configuration file.
- Matrix Mapping: The project uses a sophisticated coordinate transformation system to correctly map a logical 16x32 game grid onto 8 physically rotated and daisy-chained 8x8 matrices.
- Performance Optimization: The main loop is capped at approximately 60Hz to balance the display refresh rate with the interrupt-driven tone generation, ensuring smooth gameplay and accurate sound rendering.
This project is released under an open-source license. Feel free to clone, use, and modify it for learning purposes!