Board for STM32F103C8. Modified Power and Diode for USB and pullup for USB.
![Generic STM32F103 PINOUT DIAGRAM](https://solovjov.net/reblag.dk/The-Generic-STM32F103-Pinout-Diagram.jpg)
STM32F103C8T6 MCU minimum system board, size 31.54mm×40mm, very small, suitable for embedding in your own project, all 34 IO ports are led out, the spacing is set, you can plug directly into the hole board, input voltage 5V, SW debugging The pins are led out separately.
There are many ways to download the program, I use the serial download method. Use a USB to TTL module, BOOT0 pulls down by defa...