Pink fixed gear, four yellow satellite gears and green carrier create a differential planetary drive. Tooth number of the yellow gears is double to the one of the pink gear.
Input: green carrier rotating regularly.
When the yellow gears reach highest position, their red plates are vertical. When the yellow gears reach lowest position their red plates are horizontal.
Use the orange worm for adjusting the direction of the plates.
Inventor files of this video:
https://www.mediafire.com/file/b3jfnz...