The "Chaosknoten" logo has been created by Wau Holland for the Chaos
Computer Club e.V. (http://www.ccc.de).  It is now owned by Wau Holland
Stiftung (http://www.wauland.de/).
Wau Holland Stiftung has given BlinkenArea the permission to use the logo for
this electronics kit upon condition the hardware design and the software is
published under a free license (via email on 2019-05-16).