PixMob creates controllable, illuminated wristbands used in large concerts like Taylor Swift’s Eras Tour. The wristbands have RGB LEDs and a microcontroller that can be controlled by a moveable IR remote to create colors, fades, and flashes. The technology is simple yet effective, allowing for sweeping effects and even shapes like hearts. A reverse engineering community has developed around this, with efforts to understand and control the wristbands, such as using the Flipper Zero to make them fade orange. Overall, PixMob’s wristbands are a cute and clever way to produce visually stunning effects at concerts.
https://blog.jgc.org/2024/05/controlling-taylor-swift-eras-tour.html