DIY Hair Scrunchie

Behold, the humble hair scrunchie! This fabric hair accessory has a somewhat contested reputation in fashion history, but there’s no denying its practical use as a gentle hair tie and fun DIY sewing project. Whether you’re planning a 90s throwback party or just want to wear something soft while sleeping, scrunchies whip up quickly and require very little fabric. Practice your skills from the Instructables Machine Sewing Class with a small batch of scrunchies.

For this easy sewing project, you will need:

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Mystical LED Halloween Hood

Create glowing eyes for your costume! This project is ideal for any character with glowing eyes, like the Black Mage from Final Fantasy, Jawa from Star Wars, or Orko from He-Man. Two NeoPixel Jewels can appear any color or animating pattern, and they are driven by a GEMMA microcontroller powered by a 500mAh lipoly battery in a 3D printed pocket.

Before you begin, check out these prerequisite guides:

For this project, you will need:

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How To Sew NeoPixels with Conductive Thread

What’s a wearable project without LEDs? Designed specifically for wearables, bright RGB LEDs are paired with a constant-current driver chip. The contacts are easily sewn with conductive thread. Use this guide to test your first pixel and start on a blinding wearables project with Circuit Playground Express, FLORA or GEMMA!

Each pixel draws as much as 60mA (all three RGB LEDs on for full brightness white). In theory, FLORA can drive up to 500 pixels at 30 FPS (above which it will run out of RAM). Circuit Playground Express can drive more than that.  However, above about 20 pixels (and/or if the overall length of conductive thread exceeds ~6 feet/2 meters), the nontrivial resistance of the thread adds up and can affect the power supply. For large quantities of pixels over 20 or if you need to insulate your circuit, you should upgrade to silicone coated stranded core wire, which will provide better conductivity for the pixels – the current draw will add up fast!

Before you begin, familiarize yourself with the following tutorials:

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