I haven't written a blog for a long time. There was a project related to home appliance control. I tried a variety of solutions. After the project is over, I am still constantly updating it.
The main hardware on the board includes: w5500 stm32 cc2530 sd card ch340g
So I repainted the board again, this time the board looks more perfect, the basic hardware debugging is passed, and the network is stable.
The board is ugly, don't laugh at me
The two pictures above:
Part of the schematic:
