LayerOne 2024 POV Spinner Badge
ATTiny4313 POV fidget-spinner badge
The LayerOne 2024 POV Spinner Badge was an electronic fidget-spinner conference badge that displayed words and patterns through a 12-LED persistence-of-vision strip while spinning.
Tag dossier
MIT
Badge records tagged with MIT, across Australia, Canada, Sweden, United States.
CactusCon 13 Badge
Badge Pirates CC13 ESP32-S3 badge archive
The CactusCon 13 badge is preserved through Badge Pirates' public CactusCon13 repository, which publishes KiCad CAD files, Gerber output, outer-board variants, 3D-print assets, ESP32-S3 reference material, and a MIT-licensed source archive for the 2025 CactusCon badge.
Flutter & Friends 2025 E-Paper Conference Badge
NFC-updatable passive four-color e-paper developer-conference badge
Flutter & Friends' organizer-published conference-app source added a Friends Badge editor on August 30, 2025: users could select an image, preview it with dithering, and write it to the conference badge through NFC. The companion `friends_badge` package explicitly describes control of the Flutter & Friends e-paper conference badge, and its implemented target profile is a passive four-color e-paper device. The source-backed record establishes a real event-linked electronic artifact at the completed Stockholm conference, but does not establish that every attendee received one, that it served as admission, or what final physical units contained.
NorthSec 2025 Badge
ESP32-C3 conference and CTF badge with SAO and IR pairing
NorthSec 2025's official badge repository documents an ESP32-C3-WROOM-02-N4 badge with eighteen NeoPixel RGB LEDs, five buttons, an IR pairing connector, two SAO v1.69bis connectors, USB-C or AAA battery power, and separate conference/CTF firmware builds.
Avnet FAE Institute 2026 PCB Badge
Alex Glow's MIT-licensed hardware-experimentation event PCB badge
Alex Glow's public repository describes this as an official PCB-badge commission for Avnet's FAE Institute 2026, and its linked Hackster project calls it a cyber-gem and platform for hardware experimentation. The commit-pinned source archive contains KiCad 9 board files, Gerber outputs, custom footprint libraries, and front/back repository rasters. Public vendor updates identify the July Phoenix FAE Institute's hands-on technical-training context. Together these sources establish a real event-specific hardware design, but not participant-wide issuance, a final manufactured configuration, a source-to-unit mapping, or a delivery ledger.
BSides Brisbane 2026 Clock Module Badge
Post-event 555/74LS clock-generator badge with MIT source release
BSides Brisbane 2026's official prospectus offered electronic badge design/build for 500 delegates, Humanitix marked the July 4 event passed while listing conference-badge and VIP special-badge pickup, and public event updates named BLARGE as the electronic-badge supporter. Six days after the event, the `bsidesbrisbane/badge-2026` repository publicly documented the actual 2026 Clock Module: a photographed purple BSides Brisbane board in a 3D-printed case, a simple manually controllable clock generator made from 555 timers and 74LS-series logic, with committed Gerbers, BOM/CPL production data, an STL case file, and an MIT license.
Darknet-NG SMAO (DEF CON 34)
Open-source pre-event 125-unit Meshtastic Simple Add-On for DEF CON 34
Darknet-NG's own current badge page identifies the Darknet-NG SMAO as its Level 3 build: a full Meshtastic node in an SAO form factor. The maker's live Uberflux product payload describes a $55 125-unit presale and currently reports 125 sold with zero remaining, no shipping options, and DEF CON 34 contest-booth pickup only; that is a time-specific availability snapshot, not proof of completed manufacture, collection, or delivery. A matching maker-owned, commit-pinned `dcbokonon/darknet-smao` release now publishes the v1.4 KiCad project, fabrication outputs, BOM/placement data, firmware build material, and RF-tuning source, alongside an MIT-licensed official upstream board render. This is a source-backed independent pre-event mesh-radio add-on record, not independent RF/compliance validation, a DEF CON organizer-issued product, conference credential, admission right, or completed fulfillment record.
Onion DAO 2026 Hardware Badge
Open ESP32-S3 Chicago builder-festival hardware badge
Onion DAO's official 2026 Chicago festival page says every accepted attendee gets a hardware badge at registration, with most components already on the board and a final soldering step. The same official site links to OnionDAO's public oniondao-badge repository, which documents a hacker-conference-style ESP32-S3 design, optional RF/audio modules, a display socket, secure element, expansion ports, and source trees for hardware and software. The public record supports a real organizer-published artifact and design, while exact recipient allocation, completed assembly, and final attendee population remain unverified.
Open Sauce 2026 Badge
SauceBot / Arduino Sopracciglio electronic badge with a post-event KiCad archive
Open Sauce 2026's SauceBot badge is documented by Caleb Marting's post-event public archive as an Arduino MKR Zero-compatible electronic badge with native KiCad sources, firmware, a microphone, button, red LEDs, battery holder, and optional Simple Add-On headers. The archive says at least two attendees hacked badges Saturday night and brought four new games on Sunday; an independent attendee firmware archive also describes receiving an eyebrow module and replacing the original Bop It-style firmware. Together the sources establish a real festival artifact and hands-on hacking trail, not a universal attendee allocation or organizer-owned source release.
Temporal Replay 2026 Badge
MIT-licensed ESP32-S3 badge with Doom, MicroPython, and IR boop
An official Temporal Replay 2026 developer-conference badge documented by the MIT-licensed temporal-community/badge.temporal.io repository as an ESP32-S3 app platform with an OLED and LED matrix, a Doom port, MicroPython, and infrared boop badge-to-badge networking, for the May 5-7, 2026 event in San Francisco.