This is a model of a mechanical seven segment display which works on 7 servo motors powered and controlled by an Arduino. To be able to display digits , it relies on the motors to spin at an angle of 90 degrees so that some segments remain upright whereas some bend down.
This way, at an instant only the desired segments are seen from the top view which in turn makes it look like numbers starting from 0 upto 9.
Fell free to change the dimensions according to your requirement in the CAD file provided.
creality PLA(wood filament)