Arduino for STM32

Because of the proliferation of fakes of the STM32F103C8T6 going around, I made a PCB you can use if you want to roll your own. Of course, you could always buy a fake and lift swap the fake for a real part, but this board is made of more durable components. It uses very easily sourceable 0805 SMT parts and is designed to have better RFI properties. Here is the github repository:

https://github.com/profdc9/STM32surface/

Here is a picture of the PCB:

+1 thanks

+1

Why does the blue pill have 2 crystals?

2nd crystal is for RTC and can feed clock in low power mode, when separate vbat provided. Usualy it have 32.768KHZ frequency.