Same, programmed an arduino last week, that was all I had to do too

Yeah or a screen cover like flip flop phone. That still a cool starting point for modders. The know issues are pretty much a no go for now. Especially the inability to go in the bios

And the battery is integrated to the brick. Their is no hardware for sale for this kind of thing. You have to customers build everything and make some customizations to the OS. I tried a project like this years ago with a raspberry pi and a vufine as a screen. The customization were heavy and the thing was barely able to run any game for 300€ of hardware.

Because he could.

With battery too