Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.
TurBoss/z80neo
z80neo, another z80 board
TurBoss/ZxIDE
ZX Spectrum 128K 2+ IDE Adaptor
TurBoss/ESP-MAINS-SWITCH
esp8266 mains switch