A 32x32 pixel screen that can display Git animated images

Links:
Open source address: https://github.com/literem/led-matrix-32x32
Bilibili video demonstration: https://www.bilibili.com/video/BV17C4y1V7Po/?share_source=copy_web&vd_source=270a1be8dc034228384b848da1bf38b7
 
Hardware Construction
: This project is based on the ESP32 microcontroller and consists of three boards: a module board, a connection board, and an ESP32 main control board.

Module Board: A board that connects 16 8x8 pixel 788BS dot matrix modules. It has no chips and provides 32 row pins and 32 column pins.
Baseboard: Its function is to connect the module board. It has chip control: four 74HC138 chips control row scanning, and four 74HC595 chips control columns. The board has interfaces on both sides for data and power input, allowing for interconnection to connect multiple 32x32 dot matrix
ESP32 control boards. This board combines a connection board function with an ESP32 microcontroller, an RX8025T clock chip, and a battery charge/discharge management chip. It achieves a cascading effect when connected to a base board.

 
Note: The base board is not used in this project because the dot matrix screen cascading is not utilized.
 
The function for displaying GIF images is implemented here. The ESP32 microcontroller is developed using Arduino and displays data via serial port; whatever is sent via serial port is displayed. The host computer software is written using Qt to split the GIF images, scale each image to 32x32 pixels, perform grayscale and binarization, and finally convert it into a 128-byte array. This array of multiple images is stored in a file. During playback, the byte data in the file is read and sent to the dot matrix screen via serial port. Each serial port sends one data frame (128 bytes). The host computer does not actively send data; it only sends a data frame when it receives a request from the ESP32.
 
Two power supply methods are available: Type-C power and battery power, with battery charging also supported. Since only GIF animation display is currently implemented, it needs to be connected to a computer's USB port, making battery power somewhat redundant. The PCB design included an RX8025T real-time clock chip, an IP5407 power management chip, and an AT24C32 memory chip, but their functions are not used in this project. Cascading multiple dot matrix screens might be useful for text scrolling.
 
 
Software
for the lower-level device: The code is compiled using Arduino IDE and downloaded to the ESP32. Compilation with version 1.8.12 worked without issues; I'm unsure if higher or lower versions will cause errors, as I haven't tested them.
The upper-level device: Developed using QT, simply unzip and run Matrix32x32.exe; it generally runs directly. Then connect the dot matrix screen, ensuring the baud rate is selected correctly (use the default).
 
 
Physical product display
: front view,
 
back view,
 
and the two boards after separation.