Tag dossier
Badge records tagged with Badge Contest, across United States.
Propeller multicore IR puzzle and development badge
A Ryan Clarke-designed DEF CON 20 electronic badge manufactured by Parallax around the Propeller P8X32A multicore processor, infrared badge-to-badge communication, eight LEDs, USB programming, many physical variants, and a crypto/social badge challenge.
Propeller 1 infrared puzzle and contest badge
A Parallax-built official DEF CON badge for DEF CON 22, based on the Propeller 1, infrared transmit/receive hardware, touch-pad buttons, LEDs, full USB programming, exposed I/O, and thirteen attendee-role styles.
Playable vinyl-record noir puzzle badge
A Ryan Clarke / 1o57-designed DEF CON 23 badge issued as an actual playable 7-inch vinyl record, with role-colored editions, printed mystery alphabets, inner-groove markings, lanyard ciphers, record audio, and a noir-themed badge challenge.
Electronic skull badge with Konami and serial puzzle paths
A Ryan Clarke / 1o57 DEF CON 24 electronic skull badge with a mini processor, buttons, LED eyes, printed codes, hidden-trace/silkscreen text, serial strings, lanyard data, conference-media files, and a badge challenge that used the Konami Code as an early visible hook.
Six-port Pico W SAO hub
The Supercon 8 official badge used a Raspberry Pi Pico W and six SAO ports as an I2C playground, bundling touchwheel, LED petal matrix, blank protoboard, and CH32V003 I2C proto-petal add-ons with MicroPython examples.
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.