Tag dossier
Badge records tagged with WS2812, across 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.