Amazon.com: STM32F103RCT6 Development Board Module STM32 STM32F103 ARM Embedded System Board for LCD Screen : Electronics
STM32 - Wikipedia
Custom STM32F103 board fails at HSE oscillator setup and returns 'HAL_Timeout' when trying to implement USB. Anyone had a similar experience? More details in body. : r/embedded
STM32F103 Bluepill–Getting Started with Arduino core | alselectro