Except this time it's building the computers into the TTY itself, from what I see. It also mirrors a classic design in another way: It's using an Arduino as a

Except this time it's building the computers into the TTY itself, from what I see. It also mirrors a classic design in another way: It's using an Arduino as a front-end for the Pi, like how a PDP-10 mainframe used a PDP-11 as a front end, or how IBM mainframes have front-end processors. Similar problems have similar solutions.