Chaos Communication Congress

35th Chaos Communication Congress

The 2018 Chaos Communication Congress in Leipzig, where Thomas Flummer produced an unofficial Labitat indie badge around the 35C3 Refreshing Memories visual theme.

Leipzig · Germany · 2018

35C3 Labitat Indie Badge

An unofficial Labitat indie badge for 35C3 using the congress artwork theme, a simple flip-flop memory circuit, reverse-mount LEDs, a two-AA battery holder, and an optional power-only Shitty Add-On footprint.

Lifecycle

Add-ons & Upgrades

35C3 Labitat Indie Badge optional

badge expansion

Power-only Shitty Add-On connector

The optional SAO connector follows the rough orientation of the standard for upright add-ons but leaves I2C pins unconnected, making it a power-only aesthetic expansion point.

Compatibility: 35C3 Labitat Indie Badge

35C3 Labitat Indie Badge source-backed

discrete electronics

One-bit SR latch badge circuit

The badge turns the 35C3 Refreshing Memories theme into a simple flip-flop memory circuit with two orange LEDs and button-controlled state.

Compatibility: 35C3 Labitat Indie Badge

35C3 Labitat Indie Badge source-backed

visual hardware

Reverse-mount artwork backlight

Ten green and ten blue LEDs illuminate the front-side circuit artwork through the PCB, while the assembly guide documents reversed LED mounting and soldering risks.

Compatibility: 35C3 Labitat Indie Badge

Operational history

Issues & Camp Impact

35C3 Labitat Indie Badge note

missing rights-cleared image · local project policy · needs licensed original replacement

No 35C3 Labitat badge image is published because the project page and assembly photos do not provide a complete reuse basis, attribution string, and processing record for this catalogue.

The entry remains source-backed and image-free rather than copying all-rights-reserved project photography.

35C3 Labitat Indie Badge note

production rework caveat · primary assembly guide · historical

The assembly instructions document a PCB design error where missing LED keepout areas required rotary-tool copper removal on boards, while the GitHub design files had the error fixed.

The record preserves production reality and warns future builders that surviving boards may differ from repository files.

35C3 Labitat Indie Badge note

unofficial badge classification · primary project page · documented

The project page says there was not an official DEF CON-style electronic badge tradition at Congress and frames this as an indie badge made for Labitat.

The catalogue treats the badge as Congress hallway badgelife, not as an official CCC admission badge.

Resources

35C3 badge assembly instructions assembly guide · Detailed assembly guide source for components, two-AA battery holder, reverse-mounted buttons and LEDs, power-only SAO footprint, and board-rework caveat. flummer/35c3-badge design files · Public GitHub design-file repository linked from the project page for the 35C3 Labitat badge. 35C3 wiki official event wiki · Official archived 35C3 wiki source for event context, Leipzig setting, and annual four-day CCC congress framing. 35C3 badge for Labitat project page · Project-owner source for unofficial classification, Labitat context, SR-latch memory theme, reverse-mount LEDs, board artwork, and GitHub design-file link.

Sources

Chaos Communication Congress: 35C3 Wiki Retrieved 2026-05-15 · Official event source for 35C3 as the 2018 annual four-day CCC congress in Leipzig. GitHub: flummer/35c3-badge Retrieved 2026-05-15 · Public design-file repository linked from the primary project page. Thomas Flummer: 35c3 badge assembly instructions Retrieved 2026-05-15 · Primary assembly source for component placement, modified push buttons, BC817 transistors, LED/resistor counts, two-AA power, SAO connector behavior, and rework details. Thomas Flummer: 35c3 badge for Labitat Retrieved 2026-05-15 · Primary project-owner source for the unofficial Labitat badge, no-official-DEF-CON-style-badge statement, SR-latch theme, reverse-mount LED construction, and GitHub design-file pointer.