SHA2017 Badge
Dutch camp Badge.Team milestone
A Badge.Team-supported Dutch camp badge with ESP32, e-paper, WiFi, Hatchery apps, WebUSB install paths, production lore, and a lasting role in European badge culture.
Tag dossier
E-paper
Badge records tagged with E-paper, across Australia, Croatia, Germany, Israel, Netherlands, Taiwan, United States.
HITCON CMT 2018 HITCON Wallet Badge
Blockchain wallet badge with secure element, e-paper, Wi-Fi, and BLE
HITCON CMT 2018's official events page documents HITCON Wallet as a limited blockchain electronic badge for Royal VIP and Premium Pass holders, with secure-element cold-wallet functionality, electronic paper, Wi-Fi, and Bluetooth Low Energy. The same official page says holders could join a secret activity during the conference and later use the device as an offline physical wallet for Bitcoin or Ethereum.
ARAMCON 2019 Badge
nRF52840 e-paper smart badge with audio, NeoPixels, and SAO
A source-backed ARAMCON 2019 smart badge record for an nRF52840 conference badge with a 2.9-inch e-paper display, accelerometer, flash, MP3/WMA audio codec, Cherry MX keys, NeoPixels, SAO connector, CircuitPython support, and public KiCad hardware files.
Queercon 16 Q Badge
Membrane-keyboard ARG badge
The Queercon 16 Q Badge was an electronic DEF CON-adjacent social badge with a custom membrane keyboard, 2.9-inch e-paper display, RGB lighting, Bluetooth-capable TI CC2640R2 controller, Holtek LED driver, AA battery power, RJ12 6P6C badge-to-badge connector, and ARG mechanics across Q, C, and Handler badge roles.
TROOPERS19 Badge
ESP32 e-paper keyboard badge
A WiFi-connected MicroPython badge for TROOPERS19 with ESP32-WROVER, 2.9 inch e-paper display, full QWERTY keyboard, joystick, USB-C charging/flashing, LEDs, accelerometer, and Shitty Addon support.
BSides Canberra 2021 SAMD/ESP32 E-paper Badge
Hybrid-year badge with SAMD21, ESP32, e-paper, LEDs, and firmware restoration flow
BSides Canberra 2021 is source-backed by the official event page, an attendee production note, public firmware repository, schematic mirror, and Mos & Boo badge-hacking writeups documenting a shipped electronic badge with SAMD21, ESP32-PICO-D4, e-paper display, LEDs, capacitive touch, and firmware reflashing workflow.
Hardwear.io Netherlands 2023 E-paper Badge
Reused retail e-paper price-tag badge
A Hardwear.io Netherlands badge built from reused e-paper price tags, with attendee-facing firmware behavior documented after the conference.
DORS/CLUC 2024 Badge
E-paper IR social-quest badge
The first electronic DORS/CLUC conference badge, with a 2.66 inch monochrome e-paper display, badge-to-badge IR discovery, twelve special-badge unlocks, light-sensor web configuration, blue LED patterns, open KiCad and firmware files, and OSHWA certification.
HackerHotel 2024 Telegraph Badge
ESP32-C6 e-paper telegraph puzzle badge
An interactive Victorian-telegraph-themed puzzle badge inspired by the Cooke and Wheatstone telegraph.