The host computer software is directly used in the PC performance monitor of the micespring open source project.

    The 3d shell uses the shell of the SD2 small TV.

    The thickness of the board must be 1.2mm.

Hardware parts

    The main control is STM32L431RCT6, with 256KB Flash and 64KB RAM. The resources are quite sufficient. The key is that it is cheap and easy to buy. I bought one of BaoXin Electronics 14.2;

    The screen is a 1.3-inch TFT bare screen, 240X240 pixels, SPI interface;

    I have not used the 32.768K crystal oscillator. If you need the function of saving time when power is turned off, you can add a battery and solder the 32.768K crystal oscillator.

    Everything else is basic.

Software part

    The overall process is to power on and initialize various things, start LVGL to display the initial interface, receive data through the serial port, parse the data and display it, and then continue to loop.

    The code is generated by CubeMX, Keil5 project, FreeRTOS and LVGL6 are manually transplanted. The interface design is relatively simple, and capable open source users can modify it by themselves.

    I have packaged the entire code project as an attachment, a compressed package in English.

    The computer is relatively old, so don’t complain. .