This video was made based on:
   • 6bar Watt's linkage with a slider  
Cons: the green bar has an unusual structure, difficult to fabricate and assemble. It consists of two parts that are fixed together by a pin.
When the blue, green and yellow bars are in line, the linkage is in the dead position. That must be avoided when determining the hinge assembly position in relation to the base and cover.

STEP files of this video:
https://www.mediafire.com/file/5kp1ig...
Inventor files of this video:
https://www.mediafire.com/file/n9363b...