Hacker Con Badges

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CERN-OHL-S

Badge records tagged with CERN-OHL-S, across Italy, United States.

4 badge(s) · 2025-2026

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End Summer Camp {21} · Italy · 2025

BadgESC{21} Badge

Transparent PET flex-PCB cube conference badge

A completed Italian End Summer Camp {21} electronic badge whose organizer-owned badge-2025 repository explicitly calls it a flex-PCB badge distributed at ESC{21}. The public archive includes KiCad hardware, Gerbers, a BOM, placement data, folding material, a case directory, and firmware material; an author retrospective and first-person maker project document a transparent PET board folded into a cube. Public sources do not establish a recipient total, final unit-by-unit configuration, safety certification, a unified final firmware release, or reusable image provenance.

End Summer Camp ESC{21} Italy San Donà di Piave Electronic Badge ESP32-C3 Flexible PCB Transparent PET WLED WS2812B I2S Audio Open Hardware CERN-OHL-S No Image Europe

DEF CON 34 · United States · 2026

Not Just a Crosswalk SAO (DEF CON 34)

Planned open-hardware CH32V003 light-up Simple Add-On for DEF CON 34

The maker-owned public `keeloi79/not-a-crosswalk-sao` repository explicitly calls Not Just a Crosswalk a Simple Add-On (SAO) project for DEF CON 34. Its README documents a CH32V003 F4P6 RISC-V controller, eighteen side-emitting addressable LEDs, persistent palette/effect settings, two controls, 3.3 V host-badge power stepped to 5 V or a USB-C 5 V input path, and claimed SAO V1.69bis/V2.0 compatibility. The source tree includes documentation, schematics, firmware, build instructions, and a three-part license declaration: CERN-OHL-S v2 hardware, GPLv3 firmware, and CC BY-SA 4.0 documentation/creative works. This is a source-backed planned independent DEF CON 34 add-on, not evidence of a final manufactured run, price, sales channel, quantity, pickup, recipient, host-badge test matrix, electrical-safety validation, official DEF CON affiliation, admission right, or rights-cleared badge image.

Not Just a Crosswalk DEF CON 34 United States Las Vegas Pre-event SAO Simple Add-On CH32V003 RISC-V LEDs Open Hardware CERN-OHL-S GPLv3 CC BY-SA 4.0 Independent Badge North America

Onion DAO 2026 · United States · 2026

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.

Onion DAO Null City Chicago Illinois United States ESP32-S3 ESP-IDF Arduino KiCad CERN-OHL-S MIT E-Paper TFT CC1101 Sub-GHz Secure Element Hardware Badge Builder Festival Cybersecurity North America