OFFZONE 2026 Badge
Moscow STM32 serial-console badge
An OFFZONE 2026 conference badge documented through a first-hand attendee toolkit: an STM32 board with a USB Virtual COM Port exposing a built-in serial console with led, echo, and mini-game commands, four addressable LEDs driven by an official bytecode format distributed with the badge docs, and animation sequences verified byte-for-byte on real 2026 hardware.