More about my stacking architecture in this article:
hackster.io/news/the-armachat-nano-racks-up-the-features-by-stacking-up-pcb-pieces
Video presentation:
Main board top/bottom
Optional USB-A host board
Middle board for joystick
Top touch board ST7735
Top touch board ST7789
Middle board for games
Middle board with QWERTY keyboard
Side spacer and layer connector
What is the licence for these .brd files please?