Chaos Communication Camp

Chaos Communication Camp 2019

The edition whose card10 badge explored wearable sensing and app distribution.

Ziegeleipark Mildenberg · Germany · 2019

card10

A wrist-worn CCC Camp badge focused on sensing, health-style signals, BLE, and a Python-friendly app ecosystem.

Lifecycle

Add-ons & Upgrades

card10 historical

hardware workshop add-on

ECG electrode pad kit

Hackaday reports a 10 EUR workshop kit for soldering electrode pads to a sacrificial USB-C cable, including a demo where pads on the temples sensed left/right eye movement.

Compatibility: card10

card10 post-event

post-event software lifecycle

card10 firmware and BLE evolution

The 2021 evolution talk documents continuing firmware, Hatchery, BLE, companion-app, sensor, and reuse work after Camp 2019.

Compatibility: card10

card10 historical

software add-on ecosystem

Hatchery apps

card10's wearable hardware was extended through Hatchery-hosted applications and firmware workflows.

Compatibility: card10

Operational history

Issues & Camp Impact

card10 moderate

late camp assembly · field report · historical

Hackaday reported that the optional official card10 badge was tardy to proliferate and that the badge team continued assembly while camp was already underway.

This captures a real camp-experience issue: a major badge can be technically strong while still arriving late enough to affect who can hack on it during the event.

card10 note

not-a-watch caveat · field report · historical

Hackaday cautioned that card10 should not be mistaken for a watch, noting that timekeeping was effectively an afterthought and that setting the clock depended on the companion app because there was no battery-backed RTC.

The page separates card10's wearable form factor from ordinary smartwatch expectations and keeps the focus on sensors, BLE, and hackability.

Resources

Hatchery app repository · Badge.Team entry point for the Hatchery app repository used by card10. Hackaday hands-on card10 article · Hands-on report documenting late assembly, ECG-pad workshop use, documentation quality, and RTC/watch caveats. card10 docs official docs · Official project homepage and update notes. card10 Badge talk talk · Camp 2019 talk introducing the badge, biosensors, BLE, interh4cktions, and camp integration. card10 two years of evolution talk · Post-camp talk on firmware, Hatchery, BLE, sensor, companion-app, and reuse evolution.

Sources

Badge.Team: Badges Retrieved 2026-05-15 · Notes card10's Hatchery app repository relationship. Hackaday: Hands-On: CCCamp2019 Badge Is A Sensor Playground Not To Be Mistaken For A Watch Retrieved 2026-05-15 · Field report for late badge assembly, ECG pad kit, developer workshop, RTC/watch caveat, MicroPython and Hatchery notes. card10 project: card10 Retrieved 2026-05-15 · Primary facts for event, name, and sensors. media.ccc.de: The card10 badge: Two years of evolution Retrieved 2026-05-15 · Post-event lifecycle source for firmware, Hatchery, BLE, companion app, sensor, and reuse evolution. media.ccc.de: card10 Badge Retrieved 2026-05-15 · Primary talk source for badge purpose, biosensors, BLE, extension space, and camp app/interh4cktion workflow.