Tag dossier
Badge records tagged with GC9A01, across Germany, Mexico, Singapore, United States.
RP2040 analog vectorscope and waveform badge
An analog-inspired Hackaday Supercon badge that combined a fake-phosphor vectorscope display, programmable waveform generator, AK4619 ADC/DAC path, Raspberry Pi Pico/RP2040 control, MicroPython, joystick and buttons, and a through-hole prototyping area.
Official Electronic Cats ESP32-C6 community and VIP badge
BugCON 2024's official Electronic Cats badge was an open-hardware ESP32-C6 badge line with community and VIP variants, USB serial workflow, displays, LEDs, battery power, firmware directories, KiCad hardware trees, and CERN-OHL hardware licensing.
Berlin reuse of the RP2040 analog vectorscope badge
Hackaday Europe 2024 in Berlin reused the 2023 Hackaday Supercon Vectorscope badge: an RP2040/MicroPython analog playground with a round IPS display, ADC/DAC signal path, front controls, joystick, prototyping space, and badge-hack ceremony.
Singapore dual-screen Octopus badge
Off-By-One Conference 2024 used an Octopus-themed hardware badge with ESP32-S3 and ATmega328P controllers, dual 128x128 GC9A01 round LCDs, IR, WS2812 LEDs, buttons, a user-flashable MicroPython challenge surface, and six published challenge flags.
ESP32-WROVER MicroPython conference e-badge
BSides Fort Wayne 2025 had an electronic conference badge documented by a first-hand badge-team writeup and a public organization repository, with ESP32-WROVER hardware, dual SPI display headers, seven WS2812B LEDs, accelerometer, buzzer, LiPo charging, MicroPython firmware, and badge CTF challenge apps.
Unofficial electronic badge with a documented DEF CON 33 BadgeLife drop schedule
BigTaro's FrogStar 2025 project page calls FrogStar an unofficial DEFCON badge, and the DEF CON 33 Creator Events List schedules a BadgeLife Community Table 1 drop that explicitly names the FrogStar Badge alongside two other BigTaro artifacts. The maker page identifies a Raspberry Pi RP2350, 1.28 inch GC9A01 240 by 240 round LCD, two SAO V1.69bis ports, addressable WS2812B RGB LEDs, an infrared receiver, six buttons, frog-themed CTF and game framing, and a Firmware v1.0 UF2 download with a copy-to-flash instruction. A Tindie listing separately calls it an electronic badge and says it was a Defcon pickup preorder; a later Uberflux listing shows an $80 / seven-sold / 23-remaining snapshot, a DEF CON 34 drop label, and $11 USPS Flat Rate shipping. These sources establish a real independent electronic artifact and a scheduled 2025 event association, not a confirmed completed handout, official DEF CON issuance, admission, exact production count, completed later fulfillment, firmware source release, or reusable-image rights.
Independent ESP32-S3 Wi-Fi monitoring and foxhunt badge sold for DEF CON 33
HackMy*'s maker storefront labels GigaGeiger a Wi-Fi badge for DEF CON 33 and shows a USD 120 price with a sold-out-since-August 6, 2025 state. The same listing describes a retro Geiger-counter-inspired device with a single rotary dial for 2.4 GHz channel monitoring, MAC-address foxhunting, and browser-based firmware flashing; it says the product shipped with a lanyard and batteries. Its linked public Penzz-HM repository publishes an MIT-licensed Arduino/C++ implementation for an ESP32-S3-WROOM, GC9A01 display, rotary input, Wi-Fi scanning, promiscuous-mode packet counting, RSSI tracking, and a local web updater, plus firmware binaries, Gerbers, and enclosure STL files. A separately published GigaGeiger PCB project on PCBWay is dated June 25, 2025, names Matt Wagner, provides Gerbers, and is marked CC BY-SA. These sources establish a real independent 2025 BadgeLife artifact and a public design trail, not official DEF CON issuance, admission, a completed event handoff, a complete electrical specification, universal radio/OTA safety, or a rights-cleared hero image.
Singapore RP2350 and ECP5 FPGA challenge badge
NUS Greyhats' public GreyBadge archive identifies the 2025 GreyCTF badge as GreyMecha/Army, with RP2350-side CircuitPython firmware, KiCad hardware files, an ECP5U_25 FPGA schematic, GC9A01 SPI display, Li-ion power-path circuitry, summit UF2/filesystem releases, and named challenge apps.
Pre-event RP2350 infrared game badge with conditional LoRa score sync
Laser* Tag Badge DS is an independent BadgeLife project planned for DEF CON 34. Its maker page describes an RP2350-based infrared tag game with a 915 MHz LoRa score-sync option and QR fallback, while a public late-July update says the boards have arrived and final assembly and flashing are in progress. The record is pre-event and independent; it is not an official DEF CON admission badge.