Split-flap displays work by printing letters or numbers ... and uses an Arduino as the control board. A 3D printer and CNC machine keep the tolerances tight enough for the display to work smoothly ...

According to the project’s GitHub repository, it looks as though each split-flap has thirteen ... header drives the display via four geared stepper motors and driver boards.

The Congressional Staff Academy at the US House of Representatives has adopted split-flap display simulation software for ...

Put it this way: no-one is waiting for a picture by the digital displays. But, like most vintage tech, split-flap boards are inefficient. They are harder to update and harder to maintain.