Arduino Tilt Marble Maze (MPU-6050 + MAX7219 8x8 LED Matrix)

No screen, no joystick: tilt the circuit and an LED marble rolls through a maze! The **MPU-6050** accelerometer measures the tilt, and the marble on the **MAX7219 8x8 LED matrix** rolls that way without passing through walls. Reach the goal and a **passive buzzer** plays a tune as the next maze opens; finish all 3 for a smiley. Library-free sensor reading, tilt-to-speed control and mazes written as text in one project.