“Ba-DING!” The classic 8-bit chime from our favorite retro video game finally makes a triumphant come back as a Mario question block necklace.
It’s so tiny and adorable you're probably wondering, “How much?” This is custom…you can only make it, not buy it!
In this DIY project, we'll show you how to build the Mario coin sound jewelry so you can wear it and learn about electronics and 3d printing.
This guide was written for the Trinket Mini and Gemma v2 boards. It has been updated to also support the Trinket M0 and Gemma M0 using CircuitPython. We recommend the Trinket M0 or Gemma M0 as they are easier to use and are more compatible with modern computers!
Prerequisite Guides
Parts
- Adafruit Gemma M0, Trinket M0, Trinket Mini or Gemma v2 microcontroller board (if Trinket, either the 3.3V or 5V type works). We recommend using the Gemma M0.
- LED Sequins (warm white, or any color if you prefer) (photo shows a single LED sequin, was later decided that two looks better)
- Slide Switch
- 100mAh LiPoly battery
- LiPoly backpack - for recharging the batteries
Tools & Supplies
- Solder Iron + Solder
- Silicone Wire
- PLA Filament
- 3D Printer
- Heat shrink tubing
- #2-56 machine screws
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