Chaos Communication Congress
The 2019 Chaos Communication Congress in Leipzig, where Thomas Flummer produced an unofficial bring-your-own-controller LED badge kit for hallway badgelife hacking.
Leipzig · Germany · 2019
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.
Lifecycle
The 36C3 badge intentionally shipped without a controller so attendees could attach Arduinos, FPGAs, Feather boards, or other battery-powered controller choices.
The project page includes a CircuitPython snippet using neopixel.mpy and board.A2 on an Adafruit Feather M4 Express to run a rainbow animation.
The kit included a PCB, eight WS2812B addressable LEDs, eight 100 nF capacitors, a lanyard, and bottom-center VCC/data/GND LED-string pads.
Operational history
The record documents the shared PCB and LED kit without implying a single official firmware or complete electronics stack.
The entry remains source-backed and image-free rather than copying project-page imagery without a clear catalogue reuse basis.
The catalogue keeps it separate from official CCC event identity and models it as independent Congress badgelife.