2 layers41 × 31 mm

STM32 hardware design Course
Fred98246/STM-32-PCB-Design
Custom STM32F103C8T6 development board
32 parts1MIT
KiCad boards from 1 GitHub repository tagged “kicad-v6”, the most starred first; open any of them in PCBKit.

Fred98246/STM-32-PCB-Design
Custom STM32F103C8T6 development board