The other clock is much more beautiful. A boring video of it at night:
https://www.youtube.com/watch?v=Js-7MJpCtvI
I want to know more about this clock.
How are you driving the digits? I notice that the units digit of the seconds does a little "animation" when it changes from 9 to 0.
Also, there is a bigger animation about halfway through the video. What is that for?
The spinning digits remind me of a setting method I've seen on some watches. Only one button is used. You hold down the button to make the numbers spin, and when they get to the correct hour (or minute or whatever), you let the button go. If you tap the button instead of holding it down, the numbers advance by only 1 unit per tap. If you wait a few seconds without pressing the button, that tells the watch that you are finished. It's kind of funny, but it works. This method is easily adapted to set exact seconds if need be.