This is project is for a shop window display – two signs move up and down alternately. Using some linear slider kits from ooznest I made a few aluminium pieces to allow them to push up and down some 6mm OD rod. A teensy micro and some stepper drivers in a box does the control, with a limit switch at the motor end. A calibration routine on startup lets controller work out where the carriage is and then back off the limit switch like the CNC router does.
Its a bit loud, I’m going to add some of those rubber anti vibration bushings to mount it on.