arduino M934 ARM STM32 F030F4P6 CORTEX-M0 Core 48 MHz 32bit Mini System Development Micro Controller Board Electronic Hobby Kit

there may be a 0 to 2 cm error And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! boot mode selection and so on, to take you into the ARM Cortex world easily.