4 layers35 × 48 mm

Hoppy clock
borkdlabs/hoppy_clock
STM32-based alarm clock and RGB lamp: custom alarms wake you with light and your own songs, configured over USB from the browser or a Python tool
61 parts2MIT
KiCad boards from 1 GitHub repository tagged “stm32l432kc”, the most starred first; open any of them in PCBKit.

borkdlabs/hoppy_clock
STM32-based alarm clock and RGB lamp: custom alarms wake you with light and your own songs, configured over USB from the browser or a Python tool