Circuit is done as shown in the diagram. Volume can be controlled using 10K POT.

Program

VS1003-masterDownload

Copy and paste the program to your Arduino libraries folder. Compile and upload the example code to your Arduino board. A file named “2.mp3” will be played in my code. A file named “2.mp3” should be there in your SD card. Otherwise, it will give an error.

References :

Refer http://www.haberocean.com/2019/05/esp-12f-iot-module-programmer-circuit/ to get the programming basics.

Upload the following program to ESP-12F IOT module.

/*
Listfiles

This example shows how print out the files in a
directory on a SD card

The circuit:
SD card attached to SPI bus as follows:
** MOSI – pin 11
** MISO – pin 12
** CLK – pin 13
** CS – pin 4

created Nov 2010
by David A.

Connect the output to a Digital Storage Oscilloscope to see the variations in output with the sound signals on electret MIC.