HT1632 library not working :(

robtillaart:
we are always interested in end results here for future reference. Tidying the code up first is also a good idea.

Idea:
the : between the hours can flash in the first 20 seconds the upper dot only, the next 20 the lower one and the last 20 seconds both dots.
Gives just a bit more precise timing.

Cool idea! Should be easy to implement, thanks!