r0ket
CCCamp 2011 electronic badge
A shiny electronic nametag and full-featured microcontroller development board that established the long-lived CCC Camp badge tradition rad1o later built on.
Tag dossier
LiPo
Badge records tagged with LiPo, across Germany, Poland, Portugal, Singapore, United States.
X-CTF 2016 Badge
Singapore ESP8266 CTF badge
NUS Greyhats' X-CTF 2016 finals used a custom ESP8266 electronic badge documented by the official event page, the badge designer's hardware and firmware writeups, and public hardware and firmware repositories.
Pixels Camp 2019 PCB Badge
ESP32 39x9 LED-matrix badge for Pixels Camp
A Portugal source-backed ESP32 PCB badge for Pixels Camp 2019 with a 39x9 RGB LED matrix, IS31FL3741 LED driver, CH340G USB serial, USB/LiPo power, and public schematic/PCB design files.
THOTCON 0xD Badge
ESP32 touch-wheel badge with TFT, audio, LEDs, and games
The THOTCON 0xD badge was a Fourfold-built electronic conference badge for the May 30-31, 2025 Chicago event, documented as a 2,000-unit ESP32 touch-wheel badge with ST7789 TFT display, buzzer, six LEDs, LiPo power, add-on header, games, visual effects, and challenge hooks.
CONFidence 2026 ConfiBadge
Planned ESP32-C6 hackable badge for CONFidence
A planned official electronic badge for CONFidence 2026 in Krakow, documented as a hackable ESP32-C6 platform with OLED display, I2S audio amplifier, six navigation buttons, rechargeable LiPo power, firmware challenges, and an 8-pin expansion port.