For students who are at a loss with their mobile phones, please package them and download them. It is recommended to use a computer to package and download. Mobile phone cannot browse online. Download is to download the zip package file by pressing the green Clone or Download button. If you don’t know how to use it, please take a look at the Github tutorial: https://www.ixigua.com/i6846441137809392131/
We can only guarantee that the program can run, please solve the problem by yourself. If you do not have the basic knowledge of debugging and running Arduino programs, please purchase with caution.