I recently set out to use one of the cheap “blue pill” STM32 ARM ... see that your program gets added to other things and put in a directory named something like /tmp/arduino_build_XXXXXX ...

Most of us are familiar with the Arduino ... Uno. First of all, it has a USB type-C port, which is definitely a bonus. Secondly, it’s simpler: No USB-UART (which also means no USB programming ...