Custom designed elevator. Used with a 28BYJ-48 5V stepper motor.
This elevator was designed for a project with a raspberry pi which you can watch a video of. (Language is Dutch) The stepper motor can be placed in the holder specific designed for it. The hole at the bottom of the elevator shaft is for a distance sensor. A thing to add that isn't currently possible to print is a string that must be attached from the as to the platform.