Using my micro board to trigger an MP3 sound card

Projects General Guidance
21

The sketch won't "press a switch", it will (should) execute a line of code that will result an MP3 Play every 20 seconds or whatever you like.

This sketch plays an MP3 every 5 seconds (the MP3s I made are very short) --

#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"

// Use pins 2 and 3 to communicate with DFPlayer Mini
static const uint8_t PIN_MP3_TX = 2; // Connects to module's RX 
static const uint8_t PIN_MP3_RX = 3; // Connects to module's TX 

SoftwareSerial softwareSerial(PIN_MP3_RX, PIN_MP3_TX);
DFRobotDFPlayerMini player;  // Create the Player object

void setup() 
{
  Serial.begin(19200);
  softwareSerial.begin(9600);
  if (player.begin(softwareSerial)) 
  {
   Serial.println("OK");

    // Set volume to maximum (0 to 30).
    player.volume(22); //30 is very loud
  } 
  else 
  {
    Serial.println("Connecting to DFPlayer Mini failed!");
  }

  pinMode(13,OUTPUT);
  digitalWrite(13,LOW);
}

void loop() 
{
  Serial.print("Playing #1 \t");
  player.play(1);
  delay(5000);

  Serial.print("Playing #2 \t");
  player.play(2);
  delay(5000);

  Serial.print("Playing #3 \r\n\r\n");
  player.play(3);  
  delay(5000);
}