Tag dossier
Badge records tagged with WS2812, across Canada, France, New Zealand, Singapore, Ukraine, United States.
Ukrainian ESP32 badge and CTF platform
A Ukrainian NoNameCon 2019 electronic badge built by TechMaker around an ESP32 platform with Wi-Fi/Bluetooth, OLED display, LEDs, capacitive input, OTA firmware, SpyNet backend interaction, and a six-flag badge CTF.
Talking LED presenter wearable
A source-backed BSidesPDX 2020 presenter wearable artifact documented by the public PDX Badgers `2020-mask` repository, built as a voice-reactive LED face-mask project for the all-digital conference year rather than a conventional attendee badge.
Ukrainian ESP32 air-quality badge and CTF platform
A Ukrainian NoNameCon 2020 electronic badge by TechMaker, redesigned as a custom ESP32-WROOM-32D board with optional BME680 air-quality sensing, dual OLED displays, joysticks, touchpads, WS2812 LEDs, USB-C programming, and embedded-systems CTF tasks.
ESP32-C3 badge with Badge Clinic and MicroPython workflow
The HOPE XV Electronic Badge was issued to in-person attendees as an ESP32-C3 badge with purple attendee boards, black pro boards, case variants, 16 WS2812-class RGB LEDs, buttons, IR blast behavior, vibration feedback, open hardware files, and MicroPython hacking notes.
Unofficial ESP32-C3 handheld-style DEF CON 32 badge
The Hackbat Badge is an unofficial DEF CON 32 badgelife board documented by the Hackbat project page and GPL-3.0 GitHub repository, with ESP32-C3 Wi-Fi/BLE, OLED display, WS2812 LEDs, six buttons, AA-cell case support, and production files.
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-C3 pukeko badge with OLED, RGB LEDs, Rust VM, and Minecraft server
CHCon 2025's attendee badge was a custom circuit-board badge with an ESP32-C3, SSD1306 128x64 OLED, 24 WS2812 RGB LEDs, USB Serial JTAG shell access, bare-metal Rust firmware, a stack-based pattern VM, and a Minecraft 1.21.4 challenge server.
Current $80 RP2354 breadboard-prototyping badge; fulfillment unverified
Tw0nkus's live Uberflux listing calls Breadbadge a badge by day and a breadboard-prototyping tool by night. It identifies an RP2354A main MCU, INA3221 I2C voltage/current/power monitor, ST7789 SPI display, six WS2812 RGB LEDs, navigation joystick/back button, UART/UPDI/I2C/5 V/3.3 V/debug breakouts, and a Defcon34 drop. The same current listing displayed $80, five remaining, and four sold. Badge.Life's current DC34 Village schedule independently lists Bread Badge by Tw0nkus in its Friday 1:30 PM badge-drop slot. This is enough evidence for a distinct, independently offered pre-event electronic badge associated with DEF CON 34, not proof that DEF CON issued it, that it is an admission credential, that inventory/payment/fulfillment figures are final, that a drop or handoff occurred, or that marketplace images are cleared for reuse.
Completed ESP32-S3 CircuitPython conference badge with public source
Carolina Code Conference's organizer documented Circuit Board Badge pickup for its August 14-15 event, and its named badge partner published a source archive for an ESP32-S3 CircuitPython board. The archive identifies five WS2812 LEDs, three buttons, a 1.77-inch ST7735S display, Micro-USB, and CR123A or USB power. It supports a released badge software and hardware reference, not a recipient ledger, an independently audited final production configuration, or a rights-cleared physical-badge image.
Small-batch pre-event RP2040 youth-coding giveaway badge for DEF CON 34
A late-July public r/Defcon post by u/ProfessionalPea2218 says its author has been designing and hand-soldering a small batch of badge PCBs to help launch Cyb3rBytes404, a self-described San Diego nonprofit for free hands-on youth coding and electronics projects. The author says the badges are not for sale and are intended for random giveaway throughout ‘the con.’ Separately, the public Cyb3rBytes404 GitHub repository calls itself the official repository for the cyber coding camp and documents a custom RP2040 cyber-cat badge, MicroPython starter material and challenges, an MPU-6050 motion module, and thirty WS2812 RGB LEDs. Its visible commit history places the reviewed README update on July 28, 2026. The shared project name supports a source-backed pre-event DEF CON 34 association, but it does not establish that the Reddit author controls the GitHub namespace, that every physical PCB matches the repository snapshot, final hardware, the run size, a completed giveaway, or a DEF CON-issued credential.
Maker-documented RP2040 community eBadge with firmware, art, and SAO sources
RestiaAshdoll8's public DEFCON-SG-2026-Div0-Tingkat-eBadge repository says it contains source code and relevant files used in a physical Div0 Tingkak eBadge. It preserves a UF2, RP2040/Pico-focused source, artwork, and SAO project files. Its sources conflict on event identity: the repository title names DEF CON Singapore while its firmware menu banner says SINCON 2026 BADGE. This record keeps the DEF CON Singapore association maker-declared rather than resolving that conflict into official event status.
Official ESP32-S3 NFC e-paper badge with post-event Apache-2.0 source release
NorthSec 2026's official registration page lists a new social electronic badge as an included item for conference, CTF, combo, and training ticket holders while supplies lasted. The official competition page's retained 2026 Solarpunk section says the hackable electronic badge was fully integrated into the CTF, with badge challenges worth points and on-site badge-firmware tampering among the physical tracks. Official villages pages document badge pickup through attendees' nSec order QR codes, soldering-village activity where attendees could enhance their badge with blinking electronic parts, and a badge museum. On August 3, after the May event, NorthSec published the separate Apache-2.0 `nsec/badge-2026` repository. Its commit-pinned hardware and source tree documents an ESP32-S3 badge design with an ST25R3916 NFC front end, six buttons, eighteen WS2812/NeoPixel LEDs, a 200×200 GDEH0154D67 / SSD1681 e-paper path, KiCad design files, production BOM/CPL/Gerbers, PlatformIO firmware, conference/CTF partitions, CTF assets, and dock/SAO directories.
French ESP32-C6 B.A.D.G.E. with OLED, SAO, and BLE color propagation
The official THcon 2026 B.A.D.G.E. page documents an ESP32-C6 electronic badge with the Badge3000 WiFi access point, an I2C OLED at address 0x3C, and BLE padlock and one-time-password challenges for the May 5-6 tenth edition in Toulouse. A May 13 first-hand attendee teardown identifies the distributed board as an ESP32-C6-WROOM-1 build with an SSD1306 OLED, WS2812 RGB LED, ATC24C04 EEPROM, SAO connector, single-cell battery/TP4056 charging path, and USB-C CH340C serial bridge; it also documents the delivered firmware's BLE color-command propagation behavior.