Missing You Device No. 5

Project Description:
This open-source project is a pair of thinkers that communicate with each other via a private server using the MQTT protocol. When a button is pressed on thinker A, thinker A displays the accumulated count and sends it to the server, which then forwards it to thinker B. Thinker B sends messages in the same way.
Resource Sharing Link: https://pan.baidu.com/s/1T74ZnZFrOs6lq4cQSBbAzg?pwd=3yhk (Source code, shell, appearance video, demo video, and images)
 
Open Source License:
GPL 3.0
 
Project Functionality
: When a button is pressed on thinker A, thinker A displays the accumulated count and sends it to the server, which then forwards it to thinker B. Thinker B sends messages in the same way.
 
Project Attributes :
This is the first time this project has been publicly released; it is my original work. This project has not won any awards in other competitions.
 
Project Progress:
Server MQTT deployment completed.
 
PCB design completed.
 
Shell design completed.
 
The design principle involves
the SOC detecting button presses in real time, updating the screen display and sending a "longing signal" via the SPI interface, and then transmitting it to the server via Wi-Fi and the MQTT protocol.
The server forwards the signal to another bound "longing device." Upon receiving the longing signal, the "longing device" continuously updates its screen.