Robot Grip assembly notes

Now I have added yet one more motor M3.  Now let me look at how the motors do.  M2 rotates grip in y z plane.  In other words, all points of the grips changes in y and z coordinates, but x keeps no change.

So now I need to add another motor that rotates the grip in the x-z plane.  I am not sure where to add this new motor, very likely at the Motor 3's end.

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