Searching for a simple costume project to bring your Unikitty or Lady Rainicorn to the next level? 3D print a flexible unicorn horn and illuminate it from within with NeoPixels and a GEMMA M0, GEMMA v1 or GEMMA v2 based microcontroller. Or forget the electronics and use glow in the dark NinjaFlex filament for a green glow with no batteries required.
This guide was written for the Gemma v2 board, but can be done with either the original or Gemma M0. We recommend the Gemma M0 as it is easier to use and is more compatible with modern computers!
This is a pretty quick soldering project that is suitable for attentive beginners! Prerequisite guides:
For this project you will need:
- Ninjaflex filament in white, translucent, or glow-in-the-dark
- 2 NeoPixel Sticks
- The GEMMA M0 is recommended over the GEMMA v1 or GEMMA v2. Either will work.
- 500Ah lipoly battery and charger
- Silicone coated wire in three colors
- Grosgrain ribbon and hair elastic OR baseball cap
- Fiberfill (optional)
- Needle and thread
- Soldering tools and supplies
- 3D printer
- seam ripper
- scissors
- double-stick foam tape
- sewing machine (optional)
Unicorn glamour shots by Andrew Tingle.
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