Slider controlled by cable

Input: red pulley driven by the motor.
Output: yellow slider.
The black cable is wound many times around the red pulley to ensure the cable does not slip on the pulley.
One brand of the cable wraps around pink and blue pulleys. Its end is fixed to pin A of the yellow slider.
The other brand of the cable wraps around orange pulley. Its end is fixed to pin B of the yellow slider.
The green spring and pink pulley pivoted on the orange slider are used to automatically tension the black cable to avoid the slack cable.
Such a cable arrangement helps the slider move in both directions by reversing the motor without the aid of gravity.
The yellow slider can have a very long travel distance, almost 2 times the distance between the blue pulley and the orange pulley as shown in the last scene of the video.

STEP files of this video:
https://www.mediafire.com/file/wcqxjn...
Inventor files of this video:
https://www.mediafire.com/file/jlgzux...