Audio file playback from SD card will tell. Without using any module will play MP3 audio files only with SD card reader.

Step 1: Materials:


  1. Arduino
  2. SD card module
  3. Speaker
  4. sd card and adapter

Step 2: Electronic Section:

Download fritzing file .

SPI pins in arduino model for the communication module according to the SD card SPI protocol varies.If you use a different model that models must insert pins according to the SPI pins.

You have to convert MP3 files into WAV format.You can do the conversion in the online wave convent site. 8-bit 32000 Hz in stereo mp3 file converter file set as follows: Click the button. the files you download, install directly to your SD card.

Step 3: Software Part:

Library: SimpleSDAudio

Sample code:

#include <SimpleSDAudio.h>

void setup() {

SdPlay.setSDCSPin(4); // sd card cs pin


{ while(1); }

if(!SdPlay.setFile("music.wav")) // music name file

{ while(1);



void loop(void)


SdPlay.play(); // play music


{ ;



Step 4: Result

Except arduino mega-plus pin 9 pin to digital speakers on other models, while the mega arduino 44. Insert the digital pin. We do not specify the speaker pins in the code. Library automatically provide output from these pins.

Original Project web site : turkish web and english web

<p>To which pins can I connect the Speaker</p>
<p>iam getting an error of&quot;Arduino: 1.6.7 (Windows 10), Board: &quot;Arduino/Genuino Uno&quot;</p><p>C:\Users\4G\Documents\Arduino\sketch_feb28b\sketch_feb28b.ino: In function 'void setup()':</p><p>sketch_feb28b:7: error: 'SSDA_MODE_AUTOWORKER' was not declared in this scope</p><p> if (!SdPlay.init(SSDA_MODE_FULLRATE | SSDA_MODE_MONO | SSDA_MODE_AUTOWORKER))</p><p> ^</p><p>exit status 1</p><p>'SSDA_MODE_AUTOWORKER' was not declared in this scope</p><p> This report would have more information with</p><p> &quot;Show verbose output during compilation&quot;</p><p>please help me and tel me what to do</p><p>enabled in File &gt; Preferences.&quot;</p>
<p>Hello,</p><p>really good project and and the sd card part is really cool, but could explain the music part of the code</p>

About This Instructable




Bio: Mechanical engineer, Entrepreneur, Maker, robotic systems expert and Robimek founder
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