Description

DFplayermini x bluetooth mp3 player control

More info and updates in https://rogerbit.com/wprb/2022/12/dfplayermini-x-bluetooth/

In this tutorial we will see how to make an MP3 file player with the DFplayer mini module, Arduino and a 128x32 OLED display. We will see how to assemble the printed circuit, provided by PCBWay, we will analyze the source code, and finally we will test how the device works.

If you want to play your music on a private beach or at meetings, this MP3 player with DFplayer module and Arduino is perfect for you. It includes a printed circuit so you can build it yourself.

If you want to play your music on a private beach or at meetings, this MP3 player with DFplayer module and Arduino is perfect for you. It includes a printed circuit so you can build it yourself. With it you can play MP3s.

Female pins

Socket for arduino nano

A 1 Kohm resistor

OLED display sh1106

This is a 128x64 dot monochrome OLED display module with I2C interface. It has several advantages over LCD displays, such as high brightness, very good contrast, a wider viewing angle, and low power consumption. It is compatible with Arduino Rasberry Pi and PIC microcontrollers among others. It works with logic levels from 3.3V to 5V and has a viewing angle greater than 160 degrees. The screen size is 1.3 inches. It is powered by a voltage of 3.3V to 5V. It can be used in applications such as smart watches, MP3, thermometers, instruments, and various projects, etc.

Bookshop

U8glib

Characteristics

Interface: I2C (3.3V / 5V logic level)

Resolution: 128 x 64

Angle of view: >160 degrees

Display color: Blue

Display size: 1.3 inch

Driver IC: SH1106

Power supply: DC 3.3V~5V

Operating temperature: -20~70'C

Application: smart watch, MP3, thermometer, instruments, DIY projects, etc.

Seven push buttons

A micro SD card

hc-05 modules

Works as a bluetooth master and slave device

Configurable via AT commands

Bluetooth V2.0+EDR

Operating frequency: 2.4 GHz ISM band

Modulation: GFSK (Gaussian Frequency Shift Keying)

Transmit power: <=4dBm, Class 2

Sensitivity: <=-84dBm @ 0.1% BER

Security: Authentication and encryption

Bluetooth profiles: Bluetooth serial port.

Distance of up to 10 meters in optimal conditions

Operating Voltage: 3.6 VDC to 6 VDC

Current Consumption: 30 mA to 50 mA

Chip: BC417143

Version or firmware: 3.0-20170609

Default Baud: 38400

Supported baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.

Interface: Serial TTL

Antenna: Integrated into the PCB

Security: Authentication and encryption (Default password: 0000 or 1234)

Working temperature (Max): 75°C

Working temperature (Min): -20°C

Dimensions: 4.4 x 1.6 x 0.7 cm

PCB

Download gerber file —> gerbermp3dfplayer

Circuit

Code

Source code

C/C++

#include "U8glib.h"//Librería para el control del display oled
U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NONE);// I2C / TWI Se habilita esta linea según el display a usar en este caso el driver SH1106    
#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
String texto = "";
int vol = 10;
String cadena; 
SoftwareSerial mySoftwareSerial(10, 11); // RX, TX pines por software para la comunicación con el módulo dfplayer mini
DFRobotDFPlayerMini myDFPlayer;
int play_d2 = 2;
int pause_d9 = 9;
int stop_d4 = 4;
int next_d5 = 5;
int prev_d6 = 6;
int voltmas_d7 = 7;
int volmenos_d8 = 8;
int estado_pausa = 0;
void setup()
{
  mySoftwareSerial.begin(9600);
  Serial.begin(9600);//Velocidad del módulo bluetooth 
  pinMode(play_d2, INPUT_PULLUP);
  pinMode(pause_d9, INPUT_PULLUP);
  pinMode(stop_d4, INPUT_PULLUP);
  pinMode(next_d5, INPUT_PULLUP);
  pinMode(prev_d6, INPUT_PULLUP);
  pinMode(voltmas_d7, INPUT_PULLUP);
  pinMode(volmenos_d8, INPUT_PULLUP);
  Serial.println();
  Serial.println(F("Inicializando DFPlayer mini"));

  if (!myDFPlayer.begin(mySoftwareSerial)) {  //Usa softwareSerial para communicarte con el módulo mp3.
    Serial.println(F("No es posible iniciar:"));
    Serial.println(F("1.Comprueba las conexiones"));
    Serial.println(F("2.Por favor inserte una tarjeta SD"));
    while(true);
  }
  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.volume(vol);  //Se setea el volumen
  //Se mostrará el siguente texto en el display
  texto = "NO TRACK";
  oled();
}

void loop()
{
   while (Serial.available()) {  
    delay(3);                  
    char c = Serial.read(); 
    cadena += c;        
  }
  //Lectura del estado de los pulsadores
  int boton_play = digitalRead(play_d2);
  int boton_pause = digitalRead(pause_d9);
  int boton_stop = digitalRead(stop_d4);
  int boton_next = digitalRead(next_d5);
  int boton_prev = digitalRead(prev_d6);
  int boton_volmas = digitalRead(voltmas_d7);
  int boton_volmenos = digitalRead(volmenos_d8);
//Si se aprieta el botón de play se cumple  
  if(boton_play == LOW || cadena == "play"){
    delay(100);
    myDFPlayer.enableLoopAll();
    myDFPlayer.play();
texto = "PLAY";//Se mostrará el siguente texto en el display
oled();  
    }
//Pone en pausa el track de música
  if(boton_pause == LOW || cadena == "pause"){
    if(estado_pausa == 0){
    delay(200);
    myDFPlayer.pause();
    texto = "PAUSE";
    oled();
    estado_pausa = 1;
    }else{
    delay(200);
    myDFPlayer.start();//Vuelve a iniciar el tema donde quedó la pausa
    texto = "PLAY";
    oled();
    estado_pausa = 0;
    }
    }
//Para el track de música que se estaba repoduciendo  
  if(boton_stop == LOW || cadena == "stop"){
    delay(100);
    myDFPlayer.stop();
    texto = "STOP";
    oled();
    }
//Reproduce el próximo tack de música  
  if(boton_next == LOW || cadena == "next"){
    delay(100);
    myDFPlayer.next();
    texto = "NEXT";
    oled();
    delay(500);
    texto = "PLAY";
    oled();
    }
//Reproduce el anterior tack de música
  if(boton_prev == LOW || cadena == "prev"){
    delay(100);
    myDFPlayer.previous();
    texto = "PREV";
    oled();
    delay(500);
    texto = "PLAY";
    oled();
    }
//Incrementa el vólumen hasta 35 como máximo
  if(boton_volmas == LOW || cadena == "volmas"){
    delay(100);
    if(vol <35){
    myDFPlayer.volumeUp();
    vol = vol + 1;
    oled();
    }
    }
//Decrementa el vólumen hasta 0 como mínimo
  if(boton_volmenos == LOW || cadena == "volmenos"){
    delay(100);
    if(vol >0){
    myDFPlayer.volumeDown();
    vol = vol - 1;
    oled();
    }
    }
//Habilita la reproducción la aleatoria
    if(cadena == "random"){
    delay(100);
    myDFPlayer.randomAll();
    texto = "RANDOM";
    oled();
    }
//Habilita la reproducción en bucle
    if(cadena == "eloop"){
    delay(100);
    myDFPlayer.enableLoopAll();
    texto = "E.LOOP";
    oled();
    } 
//deshabilita la reproducción en bucle
    if(cadena == "dloop"){
    delay(100);
    myDFPlayer.disableLoopAll();
    texto = "D.LOOP";
    oled();
    } 
//Funciones de equalizador
//Habilita Normal
  if(cadena == "normal"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);
    texto = "NORMAL";
    oled();
    }
//Habilita Pop
  if(cadena == "pop"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_POP);
    texto = "POP";
    oled();
    }
//Habilita Rock
   if(cadena == "rock"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_ROCK);
    texto = "ROCK";
    oled();
    }
//Habilita Jazz
    if(cadena == "jazz"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_JAZZ);
    texto = "JAZZ";
    oled();
    }
//Habilita Classic
    if(cadena == "classic"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_CLASSIC);
    texto = "CLASSIC";
    oled();
    }
//Habilita Bass
    if(cadena == "bass"){
    delay(100);
    myDFPlayer.EQ(DFPLAYER_EQ_BASS);
    texto = "BASS";
    oled();
    } 
 if(cadena != ""){
  cadena = "";
 }     
 }


//Funcíon para mostrar texto en el dislplay oled
void oled(){
u8g.firstPage();  
  do {
    draw();//Llama a la función draw
  } while( u8g.nextPage() );
  // Reconstruir la imagen después de un tiempo
  delay(50);
  }

 void draw(void) {
  //Imprimimos en pantalla
  u8g.setFont(u8g_font_unifont);
    u8g.setPrintPos(0, 20); 
  u8g.print("REPRODUCTOR MP3");//
  //Muestra la palabra ESTADO
  u8g.setPrintPos(0, 40); 
  u8g.print("ESTADO: ");//
  u8g.setPrintPos(55, 40);
  u8g.print(texto);//Estado de reproducción del track de música PLAY STOP PAUSE
//Muestra la palabra de VOLUMEN
  u8g.setPrintPos(0, 60);
  u8g.print("VOLUMEN:"); 
  u8g.setPrintPos(65, 60);
  u8g.print(vol);//Muestra el incremento o decremento del volumen de reproducción
  }

Jul 18,2024

496 views

DFplayermini x bluetooth mp3 player control

In this tutorial we will see how to make an MP3 file player with the DFplayer mini module, Arduino and a 128x32 OLED display.

496

Published: Jul 18,2024

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