Arduino for STM32

I suggest to use the hardware serials https://github.com/stm32duino/wiki/wiki ... wareserial of the F411, not the software serial as done for Arduino Uno

See the pin map:

Yes but you need to modify some Arduino IDE boards files to add the WeAct uploader software in the IDE menu

A work around is to compile the sketch e create the shetck.bin file e then upload it in a console using:
./WeAct_HID_Flash-CLI Sketch.bin under linux or ./WeAct_HID_Flash-CLI.exe Sketch.bin ...

You need to use their uploader sofware called WeAct_HID_Flash-CLI, to be downloaded from https://github.com/WeActTC/MiniF4-STM32 ... Bootloader

Uploading the Blink Sketch the WeAct HID Bootloader has been deleted

It's possible to re-install it using this instruction https://github.com/WeActTC/MiniF4-STM32F4x1/issues/8#issuecomment-627926032
The bootloader firmware is here: https://github.com/WeActTC/MiniF4-STM32F4x1/blob/master/Soft/WeAct ...