I'm noticing chatter about their compatibility. I have several of these impressive boards, and have been looking for a reason to make nodes/gateways/repeaters out of them. My fav is the popular STM32F103C8T6 (I also have STM32F030F4P6 unopened)...
Consider me a volunteer beta tester! Love these zippy boards!
@Bogus-Exception STM32 boards are supported in the latest 2.2.0-beta, make sure to use the most recent stm32duino board defs.