Overview

Building Obsidian’s Sword from Steven Universe!

This thing was forged from foam core and has a NeoPixel LED strip making it super bright.

Customize LEDs colors and make sound effects when you swing in battle!

It’s a bit over 3 feet (900mm) long and completely made from foam core poster boards.

We used one 20x30 inch foam core boards to create this awesome sword!

The handle, blade and components are detachable so it's easy to break down and travel with!

We used Microsoft MakeCode to animate the NeoPixel LED strip! Codeblocks makes it fun and easy to learn how to program hardware with the Adafruit Circuit Playground Express.

 

The NeoPixel LED strip is press fitted into the blade with wires routed through the handle.

Alligator clips makes it easy to connect to the Circuit Playground Express!

We used a inkjet printer and vinyl cutter to make the details out of card stock!

Craft Parts/ Tools

To build this project, all you need are some foam core poster boards and art supplies. 

Prerequisite Guides

There's resources in these guides that go beyond what's covered in this tutorial. The MakeCode guide is all about setting up your Circuit Playground Express board.

The Circuit Playground Express introduction guide walks you through all of the pinouts, sensors and everything you need to know.

Parts List

This is an easy to copy + paste list of parts linked to their individual product pages.

Circuit Playground Express

PRODUCT ID: 3333
Circuit Playground Express is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and...
$24.95
IN STOCK

3 x AAA Battery Holder with On/Off Switch and 2-Pin JST

PRODUCT ID: 727
This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about...
OUT OF STOCK

Lithium Ion Cylindrical Battery - 3.7v 2200mAh

PRODUCT ID: 1781
Need a big battery for your project? This lithium ion battery contains a 2200mAh and a protection circuit that provides over-voltage, under-voltage and over-current protection. Yet, it...
$9.95
IN STOCK

Adafruit NeoPixel LED Strip w/ Alligator Clips - 60 LED/m

PRODUCT ID: 3811
Adding glowy color to your projects has never been easier: no more soldering or stripping wires, clip 'em on and glow! This Adafruit NeoPixel LED Strip with Alligator...
$12.50
IN STOCK

Small Alligator Clip Test Lead (set of 12)

PRODUCT ID: 1008
Connect this to that without soldering using these handy mini alligator clip test leads. 15" cables with alligator clip on each end, color coded. You get 12 pieces in 6 colors....
$3.95
IN STOCK
This guide was first published on Feb 19, 2019. It was last updated on Feb 19, 2019. This page (Overview) was last updated on Jul 15, 2019.