2 layers80 × 25 mm

Serial bridge
qzed/usb-serial-bridge
Bridge converting USB-C to serial (TTL) back to USB-C.
48 parts1MIT
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.

qzed/usb-serial-bridge
Bridge converting USB-C to serial (TTL) back to USB-C.