1) Connecting the Main Components

For this first step we’ll connect the microcontroller, pushbuttons, and mp3 microSD module. These components do the following:

  • Microcontroller – the brain of the music player that handles all the main functions.

  • Pushbuttons – when the user presses them, they send a signal to the microcontroller to perform a function that’ll control the music player.

  • Mp3 MicroSD Module – reads the mp3 files from the microSD card and plays them when the microcontroller tells it to.

Here is the breadboard wiring diagram for this step:

Building the Music Player
2) Adding the Resistor