The LAB at Rockwell Group designed a pair of windows with monochromatic LCD tiles at 605 Third Avenue in NYC. Not ePaper, but the large-scale pixels create a similar ornamental effect. https://www.rockwellgroup.com/projects/605-third-avenue
Really nice project and article!
I asked myself one question: Wouldn’t it be easier to just pre-render all the images on a computer and then put them on the SD-card? To just take an image and change it should be a job a Pi-Zero can accomplish.