You need to check your code more carefully before rattling off hasty posts. There are various errors but the most ovbious one is this missing line:
#include <DFRobotDFPlayerMini.h> // download this library from Arduino IDE "Manage Libraries"
You need to check your code more carefully before rattling off hasty posts. There are various errors but the most ovbious one is this missing line:
#include <DFRobotDFPlayerMini.h> // download this library from Arduino IDE "Manage Libraries"