“Time Twister 5 is a mechanical digital clock with twisting layers.
It is my first 3d printed clock.
The digits are produced by twisting the layers to front one of three faces.
Each layer is powered by a micro servo motor.
The servo motors are controlled by an Arduino MEGA.
A DS3231 Real Time Clock makes sure that the time is right.
Dimensions: Length: 84 cm (33 inches), Width: 21 cm (8 inches), Height: 24 cm (9 inches)”