Arduino Project

Arduino Tilt Maze Game with MPU6050 and OLED Display

Name	Includes Arduino board	PURCHASE LINK
Ultimate Sensor Kit	Arduino Uno R4 Minima	BUY
Elite Explorer Kit	Arduino Uno R4 WiFi	BUY
3 in 1 Ultimate Starter Kit	Arduino Uno R4 Minima	BUY
Universal Maker Sensor Kit	×	BUY

Course Introduction

In this lesson, you’ll use an MPU6050 motion sensor and an OLED display with the Arduino UNO R4 to create a tilt-controlled maze game.

By tilting the device, you guide a ball through a randomly generated maze. Reach the exit to complete the maze, and a new one is generated automatically for endless gameplay.

Note

If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.

1.1 Install Arduino IDE(Important)
1.2 Introduction of Arduino IDE

Required Components

In this project, we need the following components:

SN	COMPONENT INTRODUCTION	QUANTITY	PURCHASE LINK
1	Arduino UNO R4 Minima	1	BUY
2	USB Type-C cable	1	×
3	Breadboard	1	BUY
4	Wires	Several	BUY
5	OLED Display Module	1	BUY
6	MPU6050 Module	1	BUY

Wiring

4.png__PID:1c088c41-1078-4ec6-999f-43b38d5ec4a4

Common Connections:

OLED Display Module
SDA: Connect to A4 on the Arduino.
SCK: Connect to A5 on the Arduino.
GND: Connect to breadboard’s negative power bus.
VCC: Connect to breadboard’s red power bus.

MPU6050
SDA: Connect to SDA on the Arduino.
SCL: Connect to SCL on the Arduino.
GND: Connect to breadboard’s negative power bus.
VCC: Connect to breadboard’s red power bus.

Writing the Code

Note
You can copy this code into the Arduino IDE.
To install the library, use the Arduino Library Manager and search for Adafruit SSD1306 and Adafruit GFX and install it.
Don’t forget to select the board(Arduino UNO R4 Minima) and the correct port before clicking the Upload button.

  #include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// OLED settings
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define OLED_ADDR 0x3C

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// MPU6050 address
const int MPU_ADDR = 0x68;

// Maze settings
const int COLS = 16;
const int ROWS = 8;
const int CELL_SIZE = 8;
const int TOTAL_CELLS = COLS * ROWS;

// Wall bits
const byte WALL_TOP = 1;
const byte WALL_RIGHT = 2;
const byte WALL_BOTTOM = 4;
const byte WALL_LEFT = 8;

byte maze[ROWS][COLS];
bool visited[ROWS][COLS];

int stackX[TOTAL_CELLS];
int stackY[TOTAL_CELLS];
int stackTop = 0;

int playerX = 0;
int playerY = 0;

unsigned long lastMoveTime = 0;
const unsigned long moveDelay = 180;

// Tilt threshold
const int TILT_THRESHOLD = 6000;

void setup() {
  Wire.begin();

  if (!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
    while (true);
  }

  initMPU6050();

  randomSeed(analogRead(A0));

  generateNewMaze();
  drawMaze();
}

void loop() {
  int16_t ax, ay, az;
  readMPU6050(ax, ay, az);

  if (millis() - lastMoveTime > moveDelay) {
    if (ay > TILT_THRESHOLD) {
      movePlayer(-1, 0);   // Left
    } else if (ay < -TILT_THRESHOLD) {
      movePlayer(1, 0);    // Right
    } else if (ax > TILT_THRESHOLD) {
      movePlayer(0, -1);   // Up
    } else if (ax < -TILT_THRESHOLD) {
      movePlayer(0, 1);    // Down
    }
  }

  if (playerX == COLS - 1 && playerY == ROWS - 1) {
    showWinScreen();
    delay(800);
    generateNewMaze();
    drawMaze();
  }
}

void initMPU6050() {
  Wire.beginTransmission(MPU_ADDR);
  Wire.write(0x6B);
  Wire.write(0);
  Wire.endTransmission(true);
}

void readMPU6050(int16_t &ax, int16_t &ay, int16_t &az) {
  Wire.beginTransmission(MPU_ADDR);
  Wire.write(0x3B);
  Wire.endTransmission(false);
  Wire.requestFrom(MPU_ADDR, 6, true);

  ax = Wire.read() << 8 | Wire.read();
  ay = Wire.read() << 8 | Wire.read();
  az = Wire.read() << 8 | Wire.read();
}

void generateNewMaze() {
  for (int y = 0; y < ROWS; y++) {
    for (int x = 0; x < COLS; x++) {
      maze[y][x] = WALL_TOP | WALL_RIGHT | WALL_BOTTOM | WALL_LEFT;
      visited[y][x] = false;
    }
  }

  playerX = 0;
  playerY = 0;

  stackTop = 0;
  int cx = 0;
  int cy = 0;

  visited[cy][cx] = true;
  stackX[stackTop] = cx;
  stackY[stackTop] = cy;
  stackTop++;

  while (stackTop > 0) {
    cx = stackX[stackTop - 1];
    cy = stackY[stackTop - 1];

    int dirs[4];
    int count = 0;

    if (cy > 0 && !visited[cy - 1][cx]) dirs[count++] = 0;
    if (cx < COLS - 1 && !visited[cy][cx + 1]) dirs[count++] = 1;
    if (cy < ROWS - 1 && !visited[cy + 1][cx]) dirs[count++] = 2;
    if (cx > 0 && !visited[cy][cx - 1]) dirs[count++] = 3;

    if (count > 0) {
      int dir = dirs[random(count)];
      int nx = cx;
      int ny = cy;

      if (dir == 0) {
        ny--;
        maze[cy][cx] &= ~WALL_TOP;
        maze[ny][nx] &= ~WALL_BOTTOM;
      } else if (dir == 1) {
        nx++;
        maze[cy][cx] &= ~WALL_RIGHT;
        maze[ny][nx] &= ~WALL_LEFT;
      } else if (dir == 2) {
        ny++;
        maze[cy][cx] &= ~WALL_BOTTOM;
        maze[ny][nx] &= ~WALL_TOP;
      } else if (dir == 3) {
        nx--;
        maze[cy][cx] &= ~WALL_LEFT;
        maze[ny][nx] &= ~WALL_RIGHT;
      }

      visited[ny][nx] = true;
      stackX[stackTop] = nx;
      stackY[stackTop] = ny;
      stackTop++;
    } else {
      stackTop--;
    }
  }

  // Entrance and exit
  maze[0][0] &= ~WALL_LEFT;
  maze[ROWS - 1][COLS - 1] &= ~WALL_RIGHT;
}

void movePlayer(int dx, int dy) {
  byte walls = maze[playerY][playerX];

  if (dx == -1 && (walls & WALL_LEFT)) return;
  if (dx == 1 && (walls & WALL_RIGHT)) return;
  if (dy == -1 && (walls & WALL_TOP)) return;
  if (dy == 1 && (walls & WALL_BOTTOM)) return;

  int newX = playerX + dx;
  int newY = playerY + dy;

  if (newX < 0 || newX >= COLS || newY < 0 || newY >= ROWS) return;

  playerX = newX;
  playerY = newY;
  lastMoveTime = millis();

  drawMaze();
}

void drawMaze() {
  display.clearDisplay();

  for (int y = 0; y < ROWS; y++) {
    for (int x = 0; x < COLS; x++) {
      int px = x * CELL_SIZE;
      int py = y * CELL_SIZE;

      byte walls = maze[y][x];

      if (walls & WALL_TOP) {
        display.drawLine(px, py, px + CELL_SIZE, py, SSD1306_WHITE);
      }

      if (walls & WALL_RIGHT) {
        display.drawLine(px + CELL_SIZE - 1, py, px + CELL_SIZE - 1, py + CELL_SIZE, SSD1306_WHITE);
      }

      if (walls & WALL_BOTTOM) {
        display.drawLine(px, py + CELL_SIZE - 1, px + CELL_SIZE, py + CELL_SIZE - 1, SSD1306_WHITE);
      }

      if (walls & WALL_LEFT) {
        display.drawLine(px, py, px, py + CELL_SIZE, SSD1306_WHITE);
      }
    }
  }

  // Draw exit
  display.fillRect(124, 58, 4, 4, SSD1306_WHITE);

  // Draw player ball
  int ballX = playerX * CELL_SIZE + CELL_SIZE / 2;
  int ballY = playerY * CELL_SIZE + CELL_SIZE / 2;
  display.fillCircle(ballX, ballY, 2, SSD1306_WHITE);

  display.display();
}

void showWinScreen() {
  display.clearDisplay();
  display.setTextColor(SSD1306_WHITE);

  display.setTextSize(2);
  display.setCursor(22, 18);
  display.print("YOU WIN");

  display.setTextSize(1);
  display.setCursor(20, 45);
  display.print("New maze loading");

  display.display();
}

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Arduino Project

Arduino Tilt Maze Game with MPU6050 and OLED Display

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

Arduino Project

Arduino Tilt Maze Game with MPU6050 and OLED Display

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

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