STM32F031C6T6_COR02

I used STM32F031C6T6 because it is very cheap.
The error in the first version of OVO was
that the SWD 3.3V and GND silk screen were written upside down.
The 3.3V and GND silk screen of the NRF interface were written upside
down. The buttons were drawn wrong, so I saw that I soldered

the interface at an angle. When using
NRF, follow the instructions. The code adds a few more pins to the SPI communication as CE CS CK. It uses 1.25GH with a bayonet 8P
USART1. It uses PB6. PB7 is not the default USART1 of CUBMAX. It uses 1.25GH
with a bayonet 4P. I2C uses PF7. PF6 uses 1.25GH with a bayonet 4P.
SWB uses 2.54 horizontal 4P. 2.54 can be used to weld anything.

TYPEC
. Ordinary 6P. TYPEC only functions as a power supply and cannot communicate.
USART1 is the default USART1 of CUBMAX and is different from 4P 1.25 (it has not been tested and may have problems). Use
with reduced voltage .
LM1117 directly inputs 5V from TYPEC and has no protection.
It uses two tantalum capacitors (pay attention to the positive and negative poles)
chip
STM32F031C6T6 (I bought 5 of them and one of them broke). The QAQ
crystal oscillator has a reserved interface of 8M and 32KHZ.
It is fixed
with 4 M3 screws.
Pin headers.
You can use pin headers and female headers to make an expanded version.
I think some simple programs using STM32F031C6T6 can also meet the requirements.
The total of the peripheral originals is almost the same as the chip. OVO~~~~
For white boards, remember to use washing water, otherwise it will be very dirty. QWQ