Here’s a design for a split-flap clock that doesn’t do it the usual way. Instead of the flaps showing numbers , Klapklok has a bit more in common with flip-dot displays. Klapklok updates every ...

[Markus] got his hands on a split-flap display and built a controller for ... mounting flaps around a cylinder for a full alpha-numeric font set. A PIC 12F683 was selected to control the display ...