There are 2 repositories under cccamp19 topic.
A very fast (200+ Gbit/s) pixelflut server written in C with full IPv6 support
A FAST (80+ Gbit/s) pixelflut client with full IPv6 and animation support
An Android app to enjoy event schedules powered by Frab, Pretalx or Wafer. Main repository and issues:
An adjustable clock with date display for the card10 badge.
A Kotlin library containing a parser and models for the Engelsystem.
a simulation of the Berlin-Uhr (https://de.wikipedia.org/wiki/Berlin-Uhr) for the Card10 Badge (https://card10.badge.events.ccc.de/)
3D-printable case for the card10 badge (CCC Camp 2019 Badge)