http://www.mikrocontroller.net/topic/160694

http://emsystech.com/projekte/wordclock-open-source/

http://www.zabex.de/site/wordclock.html

http://isycn.de/qlocktwo-alternative-wordclock/528

http://www.mikrocontroller.net/articles/Word_Clock_Variante_1

http://www.mikrocontroller.net/topic/371199 (Bausatz)

https://www.youtube.com/watch?v=FvAM1t0tISE

https://www.leuchtbildshop.net/

https://www.instructables.com/Rainbow-Letter-Clock-With-a-Full-Rainbow-Effect/

https://www.panbachi.de/eigene-word-clock-bauen/

 https://tutorials-raspberrypi.de/raspberry-pi-ws2812-ws2811b-rgb-led-streifen-steuern/