I recently set out to use one of the cheap “blue pill” STM32 ARM boards. These are available for just a few bucks from the usual Chinese sources. I picked mine up for about $6 because I wanted ...

[Wassim’s] interest in STM32 was spurred by the Blue Pill board–the $2 STM32 board and his desire to debug it. He found you often have to make tweaks to the IDEs to get them to work.