Published on December 7, 2017
Input: glass slider linearly reciprocating.
Output: blue shaft.
When the shaft moves to the right, it rotates 180 deg. at the center of its stroke thanks to the cam mechanism.
When it moves to the left it does not rotate at all.
So in one double stroke the output rotates only 180 deg.
Key factors: shape of the red pin and variable depth of the cam grooves (the cyan portions are slant)
Green spring always forces the blue shaft towards the yellow cam.
Inventor files of this video:
