Regaluhr is an ESP8266 actually running two clocks. One 7-segment display and a LED strip.
The code is on github: http://github.com/DevLoL/regaluhr
7 segment display
Nothing unusual here, just an I2C device recently (August 2017) put into the front piece of an old monitor switcher.
Three blocks of colour are racing this 60 LED RGB strip. The blocks represend hour, minute and second and change the Hue of their HSV colour over the timespan of a day, hour and minute. It's red at mightnight and blue-ish around midday.