MP3 Shield Arduino uno

This MP3 shield board is designed based on VS1053B from VLSI. using this shiled you can plug in your arduino UNO/MEGA direcly as showing in pic, dont’ need need to hook up with jumpers, it’s becomes more easy to play music compared with the tiny mp3 breakout board. VS1053 is a versatile MP3 codec processor that is capable of decoding a variety of music formats,including Ogg Vorbis/MP3/AAC/WMA/MIDI audio. For the best headphone listening experience, the VS1053 includes EarSpeaker spatial processing which accurately simulates how a room with stereo loudspeakers would sound. In addition to being able to decode all major formats, VS1053 is capable of recording in Ogg Vobis file.


MP3 Shield Trigger
by: Jim Lindblom
SparkFun Electronics
date: September 23, 2013

This is an example MP3 trigger sketch for the SparkFun MP3 Shield.
Pins 0, 1, 5, 10, A0, A1, A2, A3, and A4 are setup to trigger tracks
“track001.mp3”, “track002.mp3”, etc. on an SD card loaded into
the shield. Whenever any of those pins are shorted to ground,
their respective track will start playing.

When a new pin is triggered, any track currently playing will
stop, and the new one will start.

A5 is setup to globally STOP playing a track when triggered.

If you need more triggers, the shield’s jumpers on pins 3 and 4
(MIDI-IN and GPIO1) can be cut open and used as additional
trigger pins. Also, because pins 0 and 1 are used as triggers
Serial is not available for debugging. Disable those as
triggers if you want to use serial.

Much of this code was grabbed from the FilePlayer example
included with the SFEMP3Shield library. Major thanks to Bill
Porter, again, for this amazing library!

#include <SPI.h> // SPI library
#include <SdFat.h> // SDFat Library
#include <SdFatUtil.h> // SDFat Util Library
#include <SFEMP3Shield.h> // Mp3 Shield Library

SdFat sd; // Create object to handle SD functions

SFEMP3Shield MP3player; // Create Mp3 library object
// These variables are used in the MP3 initialization to set up
// some stereo options:
const uint8_t volume = 0; // MP3 Player volume 0=max, 255=lowest (off)
const uint16_t monoMode = 1; // Mono setting 0=off, 3=max

/* Pin setup */
int triggerPins[TRIGGER_COUNT] = {0, 1, 5, 10, A0, A1, A2, A3, A4};
int stopPin = A5; // This pin triggers a track stop.
int lastTrigger = 0; // This variable keeps track of which tune is playing

void setup()
/* Set up all trigger pins as inputs, with pull-ups activated: */
for (int i=0; i<TRIGGER_COUNT; i++)
pinMode(triggerPins[i], INPUT_PULLUP);
pinMode(stopPin, INPUT_PULLUP);

initSD(); // Initialize the SD card
initMP3Player(); // Initialize the MP3 Shield

// All the loop does is continuously step through the trigger
// pins to see if one is pulled low. If it is, it’ll stop any
// currently playing track, and start playing a new one.
void loop()
for (int i=0; i<TRIGGER_COUNT; i++)
if ((digitalRead(triggerPins[i]) == LOW) && ((i+1) != lastTrigger))
lastTrigger = i+1; // Update lastTrigger variable to current trigger
/* If another track is playing, stop it: */
if (MP3player.isPlaying())

/* Use the playTrack function to play a numbered track: */
uint8_t result = MP3player.playTrack(lastTrigger);
// An alternative here would be to use the
// playMP3(fileName) function, as long as you mapped
// the file names to trigger pins.

if (result == 0) // playTrack() returns 0 on success
// Success
else // Otherwise there’s an error, check the code
// Print error code somehow, someway
// After looping through and checking trigger pins, check to
// see if the stopPin (A5) is triggered.
if (digitalRead(stopPin) == LOW)
lastTrigger = 0; // Reset lastTrigger
// If another track is playing, stop it.
if (MP3player.isPlaying())

// initSD() initializes the SD card and checks for an error.
void initSD()
//Initialize the SdCard.
if(!sd.begin(SD_SEL, SPI_HALF_SPEED))

// initMP3Player() sets up all of the initialization for the
// MP3 Player Shield. It runs the begin() function, checks
// for errors, applies a patch if found, and sets the volume/
// stero mode.
void initMP3Player()
uint8_t result = MP3player.begin(); // init the mp3 player shield
if(result != 0) // check result, see readme for error codes.
// Error checking can go here!
MP3player.setVolume(volume, volume);

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