The badge runs on an ATtiny45 and uses three 8×8 ultra-bright LED matrices for scrolling [Madison]’s name. It’s powered by a tiny LiPo battery that is boosted to 5 V. This build really shows ...

The badges are interactive. A kiosk at the conference will let you store your own scrolling ... to the display, buttons, and peripherals. This means if you’ve never blinked an LED you will ...