Black Pill
lbuild module: modm:board:black-pill-f103
STM32F103C8T6 "Black Pill" Minimum System Development Board
Cheap and bread-board-friendly board for STM32 F1 series.
Sold for less than 2 USD on Aliexpress.
https://stm32-base.org/boards/STM32F103C8T6-Black-Pill.html
This module is only available for stm32f103c8t6.
Dependencies
Limited availability: Check with 'lbuild discover' if this module is available for your target!