this reminds me of a similar project made for sudo room by the other Captain,
Captain Morgan.
On Sun, 4 Feb 2018, Captain Chesapeake wrote:
  Hi all,
 I'm working on a long-term project to build a, say, 8 x 20 matrix display.
 Each "pixel" hopefully maybe 2"x2" big. Hopefully one day to mount on
the
 wall in sudoroom and allow people to throw up text and Atari characters
 etc. This is related to noisebridge display, but with a different
 aesthetic. Is there a spot on the sudoroom website where I could document
 my progress on this project, blog style?  Otherwise I guess I would use
 traditional blogging platform.
 Thanks,
 The Cap'n