I love making machines that can mimic human actions. Many years ago, I designed a robot hand with actual joints and fingers. Using a couple of dFlex Bend sensors, I made a glove for the human arm to interact with the robot hand.
This inital concept gave me an idea of making a robot to mimic our drawing. In the early of 2013, I made a robot that can copy anything you draw from a smart phone into a paper.
Later, I turned this robot into a portrayer, who can take any human photo, and sketches it onto the paper.
Here is a video clip of the robot drawing the Queen's portrait.