https://www.electrodragon.com/product/arm-stm32f103c8t6-mini-development-board-r2/
legacy wiki page - https://www.electrodragon.com/w/STM32_Dev_Board
STM32-dat
also called as "black pill"
more documentation can be found here - https://stm32-base.org/boards/STM32F103C8T6-Black-Pill.html
DOD1046