Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The badge exposes USB CDC commands for URI, TEXT, VCARD, HELP, ABOUT, STATUS, CHALLENGE, LEDS, and SOLVE, with serial operation documented at 115200 baud.
Badge context
Official DragonJAR page documenting the exclusive DragonJARCON 2025 badge with NFC hacking functions and 100-unit scarcity.
Official event source for September 10-11, 2025 Medellin context, event positioning, optional electronic hardware badge wording, and limited workshop/badge availability.
Public repository documenting the official badge's CH32V203G6U6 RISC-V MCU, SSD1306 OLED, NT3H2111 NFC tag, LEDs, buttons, USB CDC command interface, firmware, and KiCad files.
Source trail
Primary badge source for an exclusive DragonJARCON 2025 badge with NFC hacking functions and 100-unit limitation.
Primary source for event dates, Medellin venue, Spanish-language hacker-conference framing, and optional electronic hardware badge with limited availability.
Primary repository source for official DragonJARCON 2025 badge hardware components, firmware tree, KiCad files, USB CDC commands, NDEF features, and integrated LED-key transposition challenge.