The card10 with its default watch face


card10 (From Ancient Greek καρδία (kardía, “heart”)) is the name of the badge for the 2019 Chaos Communication Camp.

It features an ECG sensor, Bluetooth Low Energy, an optical pulse sensor, a complete IMU with magnetometer and an environmental sensor.


Firmware Update: Queer Quinoa (as of 2021-12-25)

It is very easy to update your card10 firmware with just a USB-C cable. The update instructions also contain a list of the existing firmware releases.

Virtual card10 Workout

We’ll meet up again, still in virtual space, on 2021-09-19 at Hope to see you there!

card10 meetup at rc3

Day 4 (2020-12-30) 14:00 to 16:00 CET. muccc villag cellar. Jitsi:

rC3 is coming!

What role(s) can play card10 in a distributed, remote conference? Brainstorming about connectivity, functionalities, interactions: card10 at rC3

Getting started

You just received your card10, what now? The Getting started page has some advice how to assemble and use the card10.

First interhacktions

After playing around with card10 a bit, you want to learn how to write your own software. Even if you have never programmed before, it is super easy to make some LEDs blink on card10 :)


Spare me the details just give me the links to the docs!


You can reach us via our chat room (libera IRC and Matrix), Twitter, Mastodon and our GitLab instance.

Please check out the community page on how to do that.



News Archive

Hello 36C3

Our assembly is here: c3nav

Please stop by at any time :)

We are working on a workshop schedule and post it on the workshop page

Camp was wonderful, see you at 36C3

if you still have a voucher (white or blue), bring it to congress and you might be able to redeem it against one of the card10s we are reparing in the meantime.

No sale of card10s!

Got a card10 you don’t use or need one for your next project?

The card10 exchange point is here