“In this ible, I use a washable battery pack and some LEDs to sew a soft circuit into cuff for riding your bike at night.”Link to articleRelated ContentRelated Posts:A Linear LED Clock for Your DesktopSpatial Desktop ClockWireless Scoreboard Display for Drone Soccer or Other GamesNeopixel Fiber Optic Pumpkin or Jack O’Latern With Raspberry Pi PicoWordClock Made With a Single LED StripLazy 7 / MiniIlluminateSky - Luminous UmbrellaArduino Cyclone Game (Strip Led): Step by StepCRIUS Wireless Sound Reactive RGB LED PANEL (WS2812b)Make a Mesmerizing Light Pattern Clock by Upcycling an Old Clock and CD