While most people may think that a keyboard is just a board with ... The bottom part of this module has an E-ink display that can show a variety of useful information: current memory usage ...

Multiple modules are chained together to form the display. The next step would be ... project he is working on is the Braille Keyboard – a tactile input device that can be used along with ...

For one thing, it has a black and white ePaper display instead of a color screen. And for another, it has an optional 4G LTE module ... was positioned above the keyboard on the earlier model.