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Design of the minimum system board for STM32F103VCT6

Overview

1. This is the minimum system board of STM32F103VCT6 designed according to the e-sports training camp. It has a reset button, a user button, and a boot (BOOT0) selection button on board. It has a ch340 on board, which can communicate with the board directly through the USB interface. It also has a 0.96-inch OLED display screen header for direct insertion. After the device board arrived, I soldered various components on it and burned two programs, one for the onboard LED to flash every second, and the other for the OLED screen to display data. The board can work normally, and the physical verification is successful, meeting the requirements of the e-sports training camp.

2. Circuit design:

The crystal oscillator uses an 8MHZ direct-insert crystal

oscillator. The USB interface uses a Micro-USB interface. Don't ask why, because it is easier to weld!

The onboard CH340 can use a computer to communicate with the stm32 via the serial port, saving the need to connect the USB to ttl module, which is more convenient.

The voltage regulator chip uses AMS1117.

The PCB layout of the startup circuit and buttons refers to the design of Liangshan School.

3. This is the situation of MCU welding. It is pure manual soldering with an electric soldering iron. I feel that the welding effect is still very good.

Design Files

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Update:2025-06-19 09:09:57

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