Get your cybergoth on with five color-changing NeoPixels studded onto a leather collar. The tiny GEMMA microcontroller can display endless animations on this fun funky accessory that's easy to make with a little soldering!

GEMMA jewelry! The bitty board fits perfectly in the center of a NeoPixel ring for flashy hoop earrings or a charming pendant. Read on to build your own!

Before you get started, follow the Gemma M0 guide or the Classic Introducing GEMMA guide 

This guide was written for the 'original' Gemma 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!
Portrait by Andrew Tingle

You will need:

  • Gemma M0 or Trinket M0 - you can also use a classic Gemma
  • through-hole NeoPixels
  • leather collar or cuff
  • 150mAh rechargeable lipoly battery and charger
  • solderless breadboard and alligator clips for prototyping
  • soldering iron and solder
  • solid core or stranded wire (20 to 26 gauge)
  • helping third hand tool
  • pliers
  • wire strippers
  • flush diagonal cutters
  • awl or other pointy tool to pierce leather
  • sharp utility knife
  • cutting mat
  • ruler
  • marking pen/pencil
  • gaffer tape or other material to protect battery
  • velcro tape to secure battery to collar

This guide was first published on May 07, 2014. It was last updated on May 07, 2014.

This page (Overview) was last updated on May 06, 2014.

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