The file PS2X_lib.h (and its associated parts, for example a matching .cpp file) must be copied into the same directory as your program PS2X_ArmCar_Shield.ino
Google translated to English => I have put the file in the database
This is not clear where you have put the file PS2X_lib.h
The delimiters around the file name (marked in red below) are important.
The < > (chevron) marks indicate the file is in the normal library.
The " " (double quote) marks indicate the file is in the same directory as your main program.
The " " (double quote) marks indicate the file is in the same directory as your main program
Just to complement this:
with quotes, That’s where it will look first and then if it’s not in the current directory, it will look in the standard library folder.
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Google translated to English: I put the program and the file into a file and put it in the Fast LED database I added. I tried it and it still doesn’t work. I don’t know if it’s right.
No. The directory structure is not correct. The directory containing your program and the 2 PC2X_lib files should go directly under the directory "Arduino" .
Google translated to English.
Is the fast led library that I added by myself redundant? Can I just put the program and two PC2X_lib files directly under the directory "Arduino" instead of adding the fast led library?
Yes. Normally a program, written by a user, goes under the directory "Arduino".