Bring a little magic to the dance floor with the Starlight Groove Tutu—a twinkling, sound-reactive skirt that turns music into light. This project uses two strands of star-shaped NeoPixels to create a constellation of color that sparkles, pulses, and dances along with every beat. Whether you're heading to a festival, lighting up a performance, or creating something special for your favorite little ballerina, this tutu will make you shine.

The build is beginner-friendly and designed to be approachable even if you’re new to wearable electronics. A Mini Sparkle Motion controller and a simple USB battery pack keep things compact and easy to power, all tucked neatly into a small case. If you choose to use the Mini Sparkle Motion board with a screw terminal, there’s no soldering required, and the wiring is straightforward—most of the work is just a bit of sewing to attach the pixels securely to your tutu. 

This project uses the Mini Sparkle Motion ESP32 board as the light controller, and it comes in two versions: one with screw terminals and one with solderable pins to connect the pixels. If you don't want to solder, choose the screw terminal version -- though for wearables that get wiggled around a lot, I've found I get a better, more stable connection when using the solder holes. 

This board is fantastic for beginner LED projects because it will run WLED, a free, open-source LED control program that's easy to install and easy to use with no coding. This program will tap in to the Sparkle Motion's onboard microphone, giving you sound reactive modes that work right away, without having to hook up an external microphone. And it works over WiFi, so you can control your lights from your smart phone!

Parts

For wearable projects, this snap-on enclosure is a must. It will protect your board and connections and make it more likely that your tutu will sparkle all night long with no broken wires.

Star pixels make this tutu twinkle and shine! Take a look in the shop -- these also come in little ball shapes or heart shapes, so choose the ones your heart is yearning for.

We'll power this project with a USB battery, so this USB power switch will plug right in -- and it's chunky enough that it's easy to find in the tutu -- you can feel it right through the skirt.

To plug from the switch into the board, you can use a USB C to A adapter (I like this one since it has a right-angle connector), or get this short USB-C to USB-A cable for more placement flexibility and reach.

You'll Also Need

• A tutu! I ordered this Rainbow Tutu from Amazon
• A USB Battery pack - this one is my favorite
• A small piece of fabric to make a battery pocket
• A needle and thread
• Sewing pins
• A sewing machine (helpful but not necessary)
• If you're using the screw terminal version of the Sparkle Motion, you'll need a tiny flathead screwdriver
• If not, you'll need a soldering iron & accessories
• A pair of wire cutters / strippers