How To Make A Mechanical Skull In 2023

Materials Needed

To make a mechanical skull, you will need a variety of materials. These include:

  • 3D printer
  • PLA filament
  • Arduino board
  • Servo motors
  • Wires
  • Soldering iron
  • Hot glue gun
  • LED lights
  • Microcontroller
  • Power supply

Step 1: Designing the Skull

The first step in making a mechanical skull is to design it using 3D modeling software. You can create a unique design or find pre-made skull designs online. Once you have the design ready, save it in a format that is compatible with your 3D printer.

Step 2: 3D Printing

Next, you will need to 3D print the skull using your chosen PLA filament. Load the design file into your 3D printer software and adjust the settings according to your printer’s specifications. Start the printing process and wait for the skull to be fully printed.

Step 3: Assembling the Mechanical Parts

Once the skull is printed, it’s time to assemble the mechanical parts. Start by attaching the servo motors to the skull using screws or hot glue. Connect the servo motors to the Arduino board using wires and soldering if necessary. Make sure to follow the wiring diagram provided with your servo motors.

Step 4: Programming the Arduino

Now, you will need to program the Arduino board to control the movements of the servo motors. Use the Arduino IDE to write the code for the desired movements such as jaw opening and closing. Upload the code to the Arduino board and test the movements to ensure everything is working correctly.

Step 5: Adding LED Lights

To give your mechanical skull a spooky effect, you can add LED lights inside the eye sockets or other areas of the skull. Connect the LED lights to the Arduino board and program them to blink or change colors according to your preference. Secure the LED lights using hot glue or any other suitable adhesive.

Step 6: Power Supply

Make sure to connect a suitable power supply to your Arduino board and LED lights. The power supply should provide enough voltage and current to run all the components smoothly. Double-check the wiring connections and ensure everything is properly secured.

Step 7: Final Testing

Before finalizing your mechanical skull, perform a thorough testing of all the components. Make any necessary adjustments to the code or wiring to ensure smooth and accurate movements. Test the LED lights and make sure they are working correctly.

Step 8: Final Assembly

Once you are satisfied with the testing, it’s time to finalize the assembly of your mechanical skull. Secure all the wires, components, and the 3D printed skull together using hot glue or other suitable adhesives. Make sure everything is firmly in place and the skull looks complete.

Step 9: Fine-tuning

If you notice any issues or areas that need improvement, take some time to fine-tune your mechanical skull. This could involve adjusting the servo motors’ positions, refining the movement patterns, or adding additional details to enhance the overall appearance.

Step 10: Display and Enjoy

Once your mechanical skull is fully assembled and fine-tuned, it’s ready to be displayed and enjoyed. Find a suitable spot to showcase your creation and observe the reactions of your friends and family as they marvel at your mechanical masterpiece.


Creating a mechanical skull can be a fascinating and rewarding project. With the right materials, tools, and patience, you can bring a unique and spooky creation to life. So, gather your supplies, unleash your creativity, and let your mechanical skull become the centerpiece of your Halloween decorations or a conversation starter in your collection of oddities.

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