2 layers12 × 33 mm

Elec
Polycom-Open-Firmware/polycom_serial_adapter
Cheap driverless USB-C to 1.8 V serial console adapter for the TC8 (CH340N + BSS138 level shifters). atopile + KiCad.
15 parts
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.

Polycom-Open-Firmware/polycom_serial_adapter
Cheap driverless USB-C to 1.8 V serial console adapter for the TC8 (CH340N + BSS138 level shifters). atopile + KiCad.