App note: Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices – Dangerous Prototypes
STM32 Serial Port - UART With USB-TTL Converter | PC Interfacing
ST-Link STM8/STM32 v2 Compatible Programmer & Emulator : ID 2548 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
USB for Microcontrollers — Part 2: Firmware | by Manuel Bl. | Medium