In this video I explain as simple as possible how you can start programming the STM32F103C8T6 microcontroller (Blue Pill). It’s cheap and very fast….. But be aware of the 32-bit pitfalls. There is also a community forum for Arduino on STM32: My video about direct port manipulation in Arduino I bought the STM32F103C8T6 here: And also the FTDI programmer: The Arduino_STM32 project of Roger Clark on GitHub