Series

Chaos Communication Congress

CCC's annual German hacker congress, represented here by source-backed unofficial 35C3 and 36C3 badgelife records, 37C3/38C3/39C3 Hub digital community-badge systems, and the 39C3 Cyberwatch solderable smartwatch badge.

Back to series

Events

Lineage Notes

CCC's annual German hacker congress, represented here by source-backed unofficial 35C3 and 36C3 badgelife records, 37C3/38C3/39C3 Hub digital community-badge systems, and the 39C3 Cyberwatch solderable smartwatch badge.

Use the badge cards below for sourced hardware, software, lore, issues, add-ons, and author credits.

Badges

Seeded records

35th Chaos Communication Congress · 2018

35C3 Labitat Indie Badge

Unofficial SR-latch PCB badge for Labitat

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.

36th Chaos Communication Congress · 2019

Unofficial 36C3 Badge

Bring-your-own-controller WS2812B LED badge

An unofficial 36C3 badge kit made as a bring-your-own-controller blinky platform with a PCB, eight WS2812B addressable LEDs, eight 100 nF capacitors, lanyard, prototyping area, and controller examples using an Adafruit Feather M4 Express with CircuitPython.

37th Chaos Communication Congress · 2023

37C3 Hub Digital Badges

Assembly-created digital achievement badges

The 37C3 Hub archived a digital badge system where assemblies could create badges that visitors might find, redeem, and display during the Hamburg Congress.

38th Chaos Communication Congress · 2024

38C3 Hub Digital Badges

Expanded assembly-created Hub badge system

The 38C3 Hub archived an expanded digital badge system where assemblies created discoverable event badges for visitors, grouped into categories such as General, Exploration, and Help.

39th Chaos Communication Congress · 2025

39C3 Cyberwatch Badge

Modular cyberpunk watch-style badge

An electronic badge created for 39C3 as a modular, solderable watch-style device. The project was designed to be reconfigurable with interchangeable daughter boards (called shards) for different use cases.

39th Chaos Communication Congress · 2025

39C3 Hub Digital Badges

Assembly-created Hub achievement badges

The 39C3 info pages documented a Hub badge system where participants could collect assembly-created digital badges via redeem tokens, profile assignment, QR codes, and challenge or visit workflows.