2 layers87.9 × 55.4 mm

KiCad boards from 3 GitHub repositories tagged “sdcc”, the most starred first; open any of them in PCBKit.


TLDR-Electronics/STM8S003F3_PCB_Breakout_and_C_examples
STM8S003F3 Breakout board and Simple STM8 C examples with the SDCC compiler

jadeaffenjaeger/quotebox
STM8 device that plays mp3 over a DFPlayer at random intervals