MP3 SD Shield for Arduino

This assembled Audio shield gives you the ability to play audio files off an SD card with ease. With onboard Volume +/-, Play, Previous, and Next buttons along with Audio output via standard headphone jack you can easily add music/audio to your Arduino project. Connect your headphone or speaker to the output jack to control your MP3 files via Arduino.

Specifications:

• Audio Output:
• 1/8" 3.55mm Mono(the kind used for headphones / speakers)
• Solder Pads for Stereo Left and Right Speakers
• Full size SD card Slot
• Audio File Types Supported:
• 16K-320Kbps MP3 files
• 8K-44.1KHz sampling rate WAV files (SPI-FLASH)
• Onboard buttons:
  • Prev
  • Play
  • Next
  • Volume +
  • Volume -
  • Copy
  • Sleep

• Control via serial with Arduino or press the keys onboard
• Can directly drive 32 ohm headphones
• Audio Amplifier onboard
• to drive 3W/4Ω external loudspeaker.
• Adjustable Volume Resolution: 32 steps
• Supports FAT16/FAT32 file system
• Supports both SD/SDHC card and U-Disk cards
• On board 64MBit SPI-FLASH
• Supports copying audio files from SD card or U-Disk to SPI-FLASH
• Sleep Mode

#include <SoftwareSerial.h>
SoftwareSerial Geno(7,8); // Rx , Tx

unsigned char Data[10];
unsigned char i;

void setup() {
delay(1000);
Geno.begin(9600);
delay(1000);
SetVolume(30);

}

void playTrack(int num){

delay(1000);

Data[0] = 0x7E;
Data[1] = 0x04;
Data[2] = 0xA0;
Data[3] = 0x00;
Data[4] = 0x00 + num;
Data[5] = 0x7E;
Command(Data,5);

play_pause();

delay(3000);

}

void SetVolume( int vol){
Data[0] = 0x7E; // START
Data[1] = 0x03; // Length Not 0x02
Data[2] = 0xA7; // Command
Data[3] = vol; // new volume
Data[4] = 0x7E; // END
Command(Data,5);
}

void play_pause(){
Data[0] = 0x7E; // START
Data[1] = 0x02; // Length
Data[2] = 0xA3; // Command
Data[3] = 0x7E; //Mode parameter
Command(Data,4);
}

void Command(unsigned char *Data, int length){
for(int i=0; i<length; i++){
Geno.write(Data[i]);
}

}

void loop() {

playTrack(1);

playTrack(2);

}