This is a kindle for the visually impaired that allows them to read in braille. It involves pistons that go up and down to spell out individual braille letters. This was created
PDF] RoboBraille - Automated Braille Translation by Means of an E-Mail Robot | Semantic Scholar
Braille Display - Intelligent Robotics Laboratory
Math Robot App for iOS | American Printing House
NASA is Using Boston Dynamics' Autonomous Spot Robot for the Caves of Mars Project - TechEBlog