MP3 модульс картридером легко подключается к Arduino для воспроизведения звуковых файлов.

воспроизведение формата AD4 звука
воспроизведение с FAT32 microSDHC карты памяти
управление серийным портом, поддерживается адресация
управление клавишами: Play, вперед, назад
поддержка громкоговорителя 8Ом.


Тест mp3 модуля WTV020SD с Ардуино и усилителями

Пример использование:

int resetPin = 2;  // The pin number of the reset pin.
int clockPin = 3;  // The pin number of the clock pin.
int dataPin = 4;  // The pin number of the data pin.
int busyPin = 5;  // The pin number of the busy pin.

/*
Create an instance of the Wtv020sd16p class.
1st parameter: Reset pin number.
2nd parameter: Clock pin number.
3rd parameter: Data pin number.
4th parameter: Busy pin number.
*/
Wtv020sd16p wtv020sd16p(resetPin,clockPin,dataPin,busyPin);

void setup() {
//Initializes the module.
wtv020sd16p.reset();
}

void loop() {
  //Plays synchronously an audio file. Busy pin is used for this method.
  wtv020sd16p.playVoice(0);
  //Plays asynchronously an audio file.
  wtv020sd16p.asyncPlayVoice(1);
  //Plays audio file number 1 during 2 seconds.
  delay(5000);
  //Pauses audio file number 1 during 2 seconds.  
  wtv020sd16p.pauseVoice();
  delay(5000);
  //Resumes audio file number 1 during 2 seconds.
  wtv020sd16p.pauseVoice();
  delay(5000);  
  //Stops current audio file playing.
  wtv020sd16p.stopVoice();
  //Plays synchronously an audio file. Busy pin is used for this method.  
  wtv020sd16p.asyncPlayVoice(2);
  delay(2000);   
  //Mutes audio file number 2 during 2 seconds.
  wtv020sd16p.mute();
  delay(2000);
  //Unmutes audio file number 2 during 2 seconds.
  wtv020sd16p.unmute();
  delay(2000);    
  //Stops current audio file playing.
  wtv020sd16p.stopVoice();
}

тест с усилителем LM386:

тест с усилителем PAM8403