As cool as split-flap clocks and displays are, they do have a few disadvantages. The mechanism sticks out on the side, and the whole thing relies on gravity. Some people don’t care for the visual split in the middle of each digit that comes as a result. And their cousins, the Numechron clocks? Those wheels, especially the hours wheel, are really big compared to the size of what they display, so the clock housings are huge by comparison.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/05/16/non-split-flap-clock-does-it-with-fewer-flaps/