Workshop · Hacker Con Badges

THOTCON 0xA / Infinity · United States · 2019

THOTCON 0xA / Infinity Badge

DePaul IRL ESP32 badge with capacitive pads, LEDs, speaker, and microphone

The THOTCON 0xA / Infinity badge was a Chicago electronic conference badge produced with DePaul's Idea Realization Lab for the May 3-4, 2019 event. DePaul Newsline reported a six-month, 1,700-unit custom circuit-board badge build; the public Poplicola repository documents a SparkFun ESP32 Thing Dev base, five capacitive touch pads, six LEDs, speaker output, microphone input, stock-firmware restore commands, and Arduino examples.

THOTCON United States Chicago DePaul IRL ESP32 SparkFun ESP32 Thing Dev Capacitive Touch LED Speaker Microphone Arduino Audio Streaming Workshop North America

WOPR Summit 0x00 · United States · 2019

WOPR Summit 0x00 Badge

ATtiny841 soldering badge with colored and RGB LEDs

The WOPR Summit 0x00 badge was an attendee-assembled electronic badge for the inaugural Atlantic City conference. Hackaday documents a WarGames/WOPR-inspired board with a dozen colored LEDs, eight RGB LEDs, through-hole LEDs and resistors, battery holders, and an ATtiny841 controller, while Russell Handorf's build guide preserves the soldering and staff-flashing workflow.

WOPR Summit United States Atlantic City ATtiny841 RGB LED LED Badge Soldering Workshop WarGames Open Hacking Area North America

BSides Vancouver 2025 · Canada · 2025

BSides Vancouver 2025 Electronic Badge

ESP32-C3/NFC electronic badge with first-party binaries and later public source

BSides Vancouver's official 2025 badge page calls the artifact an electronic badge, links its first-party programming bundle, and directs firmware information to a public project archive. That archive documents a 2025 REV 2 board and a public firmware refactor committed in 2026, so this record separates the completed 2025 artifact from the later source-tree revision.

BSides Vancouver Canada Vancouver Electronic Badge ESP32-C3 NFC Workshop CTF No Image North America