Main Content

Neopixel Fiber Optic Pumpkin or Jack O'Latern With Raspberry Pi Pico

This 3D-printed pumpkin with integrated fiber optics can be printed with or without the face to use it as a Jack O’Latern for Halloween or a deco pumpkin. It uses a cheap Raspberry Pi Pico to drive 9 LEDs which are integrated in the base. The project idea was heavily inspired by @ItsMrJP. The pumpkin has a height of approx. 14mm (6.5 inch) and a diameter of also 14 mm (6.5 inch). It should fit to most of the standard 3D printer bed sizes. There is a cylindric hole in the middle to add batteries if needed. The Pumpkin was designed from scratch with Fusion 360.


- 3D printer (Ender 3, Prusa, Anycubic Vyper or similar)
- Soldering iron
- Sharp cutter knife

- 9 LEDs from a 60 LED/m Neopixel/WS2812 LED strip (Adafruit, Pimoroni, Aliexpress)
- 2 meter of 3mm (or 0.12inch) side glow optic fiber (Amazon, Aliexpress)
- Orange and Green 3D-printer-filament (also black for the face version), any PLA or PETG
- Raspberry Pi Pico
- Micro-USB cable”

Link to article