DIY Automatic Mahjong Machine for Home Use226

Introduction

Mahjong, a popular Chinese tile-based game, often requires a dedicated table and a set of tiles. While commercial mahjong machines exist, they can be expensive and bulky. This tutorial will guide you through the process of building your own automatic mahjong machine, customized to fit your home and budget.

Materials List* Arduino Uno microcontroller
* Motor driver (DRV8825 or equivalent)
* Stepper motors (4)
* Belt and pulleys (timing belt with 20 teeth per 25.4mm)
* Acrylic or plywood sheets (for the frame and tiles)
* Laser cutter or CNC router
* Push buttons (3)
* LCD display (optional)
* Power supply (12V or 24V)

Step-by-Step Instructions

1. Design the Frame and Tiles

* Use a CAD software to design the frame and tiles. The frame should have a rectangular shape with a slight incline to allow the tiles to roll smoothly.
* The tiles should be designed according to the mahjong tile specifications. Each tile should have a raised surface with Chinese characters or symbols.

2. Cut the Frame and Tiles

* Once the designs are complete, cut the frame and tiles out of acrylic or plywood sheets using a laser cutter or CNC router.
* Ensure smooth edges and precise dimensions for proper operation.

3. Assemble the Frame

* Assemble the frame by gluing or screwing the pieces together. Make sure the frame is sturdy and can withstand the weight of the tiles and the rotation of the rollers.

4. Install the Rollers

* Install the stepper motors on the ends of the frame. Mount the timing belt pulleys on the motors and the frame.
* Connect the timing belt to the pulleys and adjust the tension to ensure smooth and consistent movement.

5. Wire the Electronics

* Wire the Arduino, motor driver, and push buttons according to the provided circuit diagram.
* Connect the power supply to the system and verify that the motors rotate in the correct direction.

6. Program the Arduino

* Write a program for the Arduino to control the movement of the rollers and the tiles. The program should include functions for shuffling, dealing, and re-stacking the tiles.
* Test the program thoroughly to ensure it operates as intended.

7. Add Additional Features (Optional)

* Add an LCD display to provide information about the game, such as the current score and player turns.
* Integrate a button panel for user inputs, such as starting a new game or performing special moves.

Conclusion

By following these steps, you can build a fully functional automatic mahjong machine for your home. This project requires some technical skills, but with patience and the right materials, you can create a unique and enjoyable gaming experience for you and your family.

Troubleshooting Tips

* Ensure the motors are securely mounted and the belts are properly tensioned.
* Check the wiring connections and verify that the power supply is providing the correct voltage.
* Verify the accuracy of the Arduino program and make necessary modifications if needed.
* Lubricate the rollers and belts if necessary to ensure smooth operation.

2025-02-24

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