Description STM32F030F4P6 is a 0.5 USD IC, very cheap and powerful, in M0 series. STM32 is compatible with arduino IDE. Features: All IO port leads (with silk screen, easy to add a variety of modules) The serial port leads alone. Multiple groups of 3.3V 5V power supply, it is convenient to supply power to the external function module. A user LED light, A power LED light, A reset button Serial download or BOOT can be selected Support SWD (serial wire debug) download interface (through JLINK can download, debugg with KEIL version 5.0) Support Serial TTL download Documentation: Schematic please see wiki page.
