MP3

1. In terms of resource allocation, serial port 1 connects to the MP3 module, and serial port 2 connects to the Taojingchi serial screen.
2. All controls rely on the touchscreen (except for the power switch and jumper function selection).
3. It can play music, pause music, skip to the next song, change the music style, change the volume, add songs (with power-off protection), update the MP3 module on the SD card (no card reader needed, directly recognized by the Android interface), and update the serial screen information (directly via the Android interface).
4. The Android interface allows direct charging.
5. It also has a speaker interface and a headphone interface.
6. Keil files and Taojingchi serial screen files: Link: https://pan.baidu.com/s/1R3zv4ZSunctqXcQYfwpEsA?pwd=8wdh Extraction code: 8wdh
7. Bilibili video link: 【Practical Training Project - Bilibili】 https://b23.tv/UKQOgNN