Product User’s Manual – SHIELD-EZMP3
Example: To play “ABC.mp3” in MP3 folder as 1st track, user can rename the file to
I.
0001.mp3 or
II.
0001ABC.mp3 or
III.
0001_ABC.mp3
Note: As long as setting 0001 as prefix of the name of the file and provided that the file is
stored in MP3 folder, EasyMP3 shield will treat it as 1st file. This applies the same to making
2nd, 3rd track and so forth.
7.4 Test board basic functionality
There are 3 onboard push buttons for basic MP3 player functionality.
1. Make sure all steps from 7.1 to 7.3 are completed.
2. Stack EasyMP3 Shield onto compatible Arduino Board. It is advisable to upload an
emply sketch to Arduino before stacking the shield onto it. Ensure that the pins
alignment is correct.
3. Power up the whole setup with 12-5V adapter or connecting it to PC via USB cable.
4. Press any of 3 buttons to start playing the files.
5. Button 1: Play/Pause
-
Press the button to pause while the file is playing. Press again to resume after the file
stops playing.
6. Button 2: Prev/Vol-
-
Press the button to play previous file. Long press the button to decrease the volume.
7. Button 2: Next/Vol+
-
Press the button to play next file. Long press the button to increase the volume.
7.5 Upload example sketches to play tracks
1. Make sure all steps from 7.1 to 7.3 are completed. (Put at least 4 files in MP3 folder
with prefix 0001 to 0004)
2. For UART selector, select D2 for RX and D3 for TX pin.
3. Stack EasyMP3 Shield onto compatible Arduino Board. Ensure that the pins
alignment is correct.
4. Download
library from link provided at product page and
extract the files to Arduino Library folder (My Documents -> Arduino -> Libraries).
5. Connecting the whole setup to PC via USB cable.
6. Open Arduino IDE. Determine which COM port Arduino Uno is connected to and
configure the port settings under menu Tools -> Port.
7. Go to File -> Examples -> CytronEasyMP3 and open example sketch PlayATrack.
Compile and upload.
8. Open and set up Arduino Serial Monitor with 9600 Baud, and monitor the progress.
7.6 ADKEY function
ADKEY function provides user with more control on EasyMP3 shield via buttons. Other than
Play/Pause, Prev/Vol- and Prev/Vol+ buttons onboard, user can choose to perform other
actions via buttons such as select storage drive to play, repeat track, etc. The schematics is as
Created by Cytron Technologies Sdn. Bhd. – All Right Reserved
12
