This Kindle was supposed to be obsolete. The tiny LCD beside it was designed to do little more than rotate a slide show. Now both show live transit departures, weather, tasks, and anything else I can pull from an API—and I control them from the same self-hosted dashboard. No custom firmware on the LCD. No soldering. No cloud subscription. It started with a cheap Chinese display: The GeekMagic Ultra , or "SmallTV" as people call it, a 240×240 IPS panel with a stock firmw...