This is far from done, but I got to the point where I can use it. In the To-Do list:
- melt the digits together
- provide a settings screen (background color, centering, readability level, 12/24 mode)
- add extras like bluetooth indicator, vibrations
- animate changes with a morph effect
Suggestions are welcome!
My inspiration (as others') comes from this concept: Rorschach e-paper watch (not its implementation by TokyoFlash, which I personally don't like).