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First-hand attendee who documented the badge's serial console behavior and LED bytecode format and published the customizer toolkit.
SourceOFFZONE 2026 · Russia · 2026
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.
People
First-hand attendee who documented the badge's serial console behavior and LED bytecode format and published the customizer toolkit.
SourceOrganizer of the OFFZONE conference series and publisher of the 2026 recap; not asserted as badge designer or manufacturer.
SourceIt opens Russian hacker-conference coverage with a narrowly evidenced electronic badge record, keeping the organizer's own pages, production scope, and distribution claims strictly out of the dossier until official material appears.
The attendee toolkit describes an STM32 badge board with a USB Virtual COM Port and four LEDs, and documents a serial console with prompt-sync quirks, a one-second settle window, and CR-only line endings. The LED bytecode mirrors the official led_instr.h macro definitions distributed with the badge docs, including RGB and HSV set, animate, and blink opcodes with frame-tick timing. No schematic, BOM, board photo rights, production count, or organizer hardware statement was recovered.
The attendee toolkit publishes a Python LED-animation compiler that talks to the badge's built-in console without flashing, and its format reference documents the observed runtime behavior of the badge's bytecode player. No organizer firmware source, console firmware archive, badge-game server, or app was published in this pass.
OFFZONE 2026 ran August 20-21, 2026 at the GOELRO venue in Moscow, and the official conference site's 2026 recap reports roughly 3000 participants and more than 130 speakers; the site itself never mentions the badge. The first-hand toolkit's observation that official macro definitions shipped with the badge docs indicates organizers distributed at least informal badge documentation to attendees.
Lifecycle
Operational history
The entry remains source-backed and image-free rather than copying site media or attendee diagrams.
The catalogue records the observed badge console and LED system without asserting organizer design intent, quantities, ticket-class scope, or any official firmware release.