Original: [https://makerworld.com/de/models/1339971-digital-slot-machine?from=search#profileId-1380272](https://makerworld.com/de/models/1339971-digital-slot-machine?from=search#profileId-1380272)

🎰 Digital Slot Machine – Remix with Custom Case

This is a digital slot machine based on an existing project, but I designed my own 3D model for the case and modified some parts of the original code.

📦 Included:

• Custom 3D case (3MF)
• Code
• Wiring instructions

🔧 Hardware:

• ESP32 
• OLED display 1,3 Inch 
• Push buttons
• Microswitch
• Slide Switch

• Buzzer

   

• 🔩 Screws:

• 2 × M3×4 mm → for ESP32
• 2 × M2.5×4 mm → for ESP32
• 4 × M2×6 mm → for bottom plate
• 4 × M3×3 mm → for screen
• 6 × M2×4 mm → for roof
• 2 × M2×6 mm → for roof
  
   

📺 My display uses an SH1106 chip. Other chips can work as well, but then you need to change the #include <Adafruit_SH110X.h> line in the code to the library for your chip, plus adjust some other settings.
 

🔌 The display uses I²C communication. The data line is SDA, and the clock line might be labeled SCK on some modules. Technically, the correct name for the I²C clock is SCL, but some displays (like mine) label it as SCK — it still works the same.
 

⚙️ You can change all the pins if needed, but make sure to update them in the code. For example: “#define BUZZER_PIN 25” → “#define BUZZER_PIN 24”, or any other pin you use.