Electronic Cats
Repository publisher for the official DragonJARCON 2025 badge hardware, firmware, KiCad files, and challenge documentation.
SourceDragonJAR Security Conference 2025 · Colombia · 2025
DragonJARCON 2025 NFC Hardware Badge
Limited Colombian NFC hardware-hacking badge
A conservative Colombian DragonJARCON 2025 record for an optional electronic hardware badge and a separate DragonJARCON 2025 NFC hacking badge raffle limited to 100 units.
SeriesDragonJAR Security Conference
LocationCentro de Eventos El Tesoro, Medellin
CountryColombia
People
Authors & Credits
DragonJAR
Official publisher of the DragonJARCON 2025 badge page and event site.
SourceWhy It Mattered
It expands the South American compendium beyond Argentina and Brazil with a public Colombian electronic badge trail from a long-running Spanish-language hacker conference.
Hardware
Official DragonJARCON pages prove an electronic hardware badge with limited availability and an exclusive DragonJARCON 2025 badge with NFC hacking functions. The public Electronic Cats repository documents a CH32V203G6U6 32-bit RISC-V microcontroller, SSD1306 128x32 I2C OLED, NT3H2111 I2C NFC tag, eight RGB LEDs, four navigation buttons, USB-C power/communication, and KiCad schematic/PCB files.
Software & Apps
The public repository includes firmware for the CH32V203G6U6 badge, USB CDC serial commands for URI, TEXT, VCARD, CHALLENGE, LEDS, SOLVE, HELP, ABOUT, and STATUS, plus NDEF writing behavior and the integrated challenge flow.
Lore
DragonJAR framed the badge as both an optional paid hardware artifact for the Medellin conference and a scarce 100-unit giveaway tied to the community around DragonJARCON 2025. Electronic Cats presents it as the official DragonJARCON 2025 badge, a programmable NFC device with OLED, LEDs, and an integrated hacking challenge.
Lifecycle
Add-ons & Upgrades
badge challenge
source-backed
LED key transposition challenge
The repository documents a challenge where the badge emits the encrypted text OIMXEXEXDXLXANYLOXMX and transmits the key MALUMABEBE through LED timing before validating SOLVE:YOAMOMEDELLIN.
Source
distribution policy
source-backed
100-unit NFC hardware-hacking badge
DragonJAR's badge page describes an exclusive DragonJARCON 2025 badge with NFC hacking functions and says only 100 exist.
Source
firmware interface
source-backed
USB CDC NDEF command interface
The badge exposes USB CDC commands for URI, TEXT, VCARD, HELP, ABOUT, STATUS, CHALLENGE, LEDS, and SOLVE, with serial operation documented at 115200 baud.
Source
hardware architecture
source-backed
CH32V203 NFC badge platform
Electronic Cats documents a CH32V203G6U6 RISC-V MCU, SSD1306 OLED, NT3H2111 NFC tag, eight RGB LEDs, four buttons, USB-C, and KiCad hardware files.
SourceOperational history
Issues & Camp Impact
missing rights-cleared image
note
No local DragonJARCON 2025 badge image has been added because a rights-cleared original photo, exact source URL, attribution, and processing notes have not been verified.
The record stays source-backed and image-free rather than copying form or event-page images without complete reuse provenance.
- Confidence
- local project policy
- Status
- needs licensed original replacement
- Timeframe
- current catalogue build
- Source note
- badge.gallery image policy and DragonJARCON source pages.
repository scope caveat
note
The Electronic Cats repository now proves badge components, firmware, commands, KiCad files, and the challenge flow, but this pass still does not verify final shipped-unit variations, attendee-specific provisioning, or rights-cleared documentary photos.
The dossier can use component-level and firmware claims from the repository while still keeping image and distribution details conservative.
- Confidence
- primary repository plus official event sources
- Status
- public hardware and firmware repository recovered
- Timeframe
- 2025 badge archive pass
- Source note
- ElectronicCats badge-dragonJar-2025 repository, DragonJARCON 2025 event page, and DragonJAR badge raffle page.
Resources
DragonJAR Security Conference 2025
event page · Official event source for September 10-11, 2025 Medellin context, event positioning, optional electronic hardware badge wording, and limited workshop/badge availability.
DragonJARCON 2025 badge raffle
badge page · Official DragonJAR page documenting the exclusive DragonJARCON 2025 badge with NFC hacking functions and 100-unit scarcity.
ElectronicCats badge-dragonJar-2025 repository
hardware and firmware source · 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.
Sources
DragonJAR: Ganate una herramienta de Hardware hacking
Retrieved 2026-05-15 · Primary badge source for an exclusive DragonJARCON 2025 badge with NFC hacking functions and 100-unit limitation.
DragonJARCON: Congreso de Hackers - DragonJAR Security Conference
Retrieved 2026-05-15 · Primary source for event dates, Medellin venue, Spanish-language hacker-conference framing, and optional electronic hardware badge with limited availability.
Electronic Cats: ElectronicCats/badge-dragonJar-2025
Retrieved 2026-05-15 · 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.