[Color silk screen] STM32 core board (bushi

        This core board integrates a buzzer, four independent buttons, debugging serial port, ESP12F, and OLED screen. All pins are lead out at the same time to facilitate secondary development; interfaces such as SWD, IIC, and serial ports are reserved, and unused interfaces can be expanded through the XH2.54 cable interface (can be connected to an infrared tracking module or expansion version). All integrated peripherals on this core board are connected to the MCU in the form of jumper caps, making it easy to disconnect signals and power, and any pin can be connected.
        For this color screen printing event, based on the previously open source STM32 competition core board, the DAC and infrared tracing modules were deleted, and the components were also rearranged and placed. Later, I also realized some problems with automatic wiring and the There were some requirements for drawing the PCB, so I re-drawed the PCB (in fact, the main reason was that I was afraid of being scolded after the open source came out, so I went to find relevant precautions: including but not limited to the crystal oscillator package, etc. ), if there are still deficiencies in the final open source PCB, I hope you will bear with me and let me know, and I will make more improvements.
The welding video is shown in the link below:
[Color Silk Screen] STM32 core board (bushi) HFUTer takes a step first!