Linkage for 180 deg. oscillation 1a

Input: green crank of full rotation. Output: pink crank performing 180 deg. oscillation. It is a combination of two four-bar linkages: 1. Green, yellow and orange parts. 2. Orange, blue and pink parts. This feature cannot be achieved using only a four-bar linkage. This video was made based on    • Rotary to 180 degree rotation   STEP files of this video: https://www.mediafire.com/file/bd06qf... Inventor files of this video: https://www.mediafire.com/file/kgirma...