Arduino mega dfplayer mini not working

wzctuba · January 8, 2025, 7:40pm

Sorry if this is the wrong section.
I am trying to connect my mega 2560 to a dfplayer mini. I have connected my dfplayer mini directly with only buttons and it worked. i currently have it wired like this.

here is my code

#include "Arduino.h"
#include "DFRobotDFPlayerMini.h"

#if (defined(ARDUINO_AVR_UNO) || defined(ESP8266))   // Using a soft serial port
#include <SoftwareSerial.h>
SoftwareSerial softSerial(/*rx =*/10, /*tx =*/11);
#define FPSerial softSerial
#else
#define FPSerial Serial1
#endif

DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

void setup()
{
#if (defined ESP32)
  FPSerial.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);
#else
  FPSerial.begin(9600);
#endif

  Serial.begin(115200);

  Serial.println();
  Serial.println(F("DFRobot DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));

  if (!myDFPlayer.begin(FPSerial, /*isACK = */true, /*doReset = */true)) {  //Use serial to communicate with mp3.
    Serial.println(F("Unable to begin:"));
    Serial.println(F("1.Please recheck the connection!"));
    Serial.println(F("2.Please insert the SD card!"));
    while(true){
      delay(0); // Code to compatible with ESP8266 watch dog.
    }
  }
  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.volume(10);  //Set volume value. From 0 to 30
  myDFPlayer.play(1);  //Play the first mp3
}

void loop()
{
  static unsigned long timer = millis();

  if (millis() - timer > 3000) {
    timer = millis();
    myDFPlayer.next();  //Play next mp3 every 3 second.
  }

  if (myDFPlayer.available()) {
    printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
  }
}

void printDetail(uint8_t type, int value){
  switch (type) {
    case TimeOut:
      Serial.println(F("Time Out!"));
      break;
    case WrongStack:
      Serial.println(F("Stack Wrong!"));
      break;
    case DFPlayerCardInserted:
      Serial.println(F("Card Inserted!"));
      break;
    case DFPlayerCardRemoved:
      Serial.println(F("Card Removed!"));
      break;
    case DFPlayerCardOnline:
      Serial.println(F("Card Online!"));
      break;
    case DFPlayerUSBInserted:
      Serial.println("USB Inserted!");
      break;
    case DFPlayerUSBRemoved:
      Serial.println("USB Removed!");
      break;
    case DFPlayerPlayFinished:
      Serial.print(F("Number:"));
      Serial.print(value);
      Serial.println(F(" Play Finished!"));
      break;
    case DFPlayerError:
      Serial.print(F("DFPlayerError:"));
      switch (value) {
        case Busy:
          Serial.println(F("Card not found"));
          break;
        case Sleeping:
          Serial.println(F("Sleeping"));
          break;
        case SerialWrongStack:
          Serial.println(F("Get Wrong Stack"));
          break;
        case CheckSumNotMatch:
          Serial.println(F("Check Sum Not Match"));
          break;
        case FileIndexOut:
          Serial.println(F("File Index Out of Bound"));
          break;
        case FileMismatch:
          Serial.println(F("Cannot Find File"));
          break;
        case Advertise:
          Serial.println(F("In Advertise"));
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }

}

when i run it the code gives me this error

DFRobot DFPlayer Mini Demo

Initializing DFPlayer ... (May take 3~5 seconds)

Unable to begin:

1.Please recheck the connection!

2.Please insert the SD card!

is this some kind of error with the compatability of my code with my board or is it some kind of wiring issue. please help

runaway_pancake · January 8, 2025, 8:04pm

D2, D3 in sketch vs D10,11 in hastily pasted diagram
heavy sigh

PaulRB · January 8, 2025, 8:10pm

Irrelevant, this is a mega2560.

The player should be connected to TX1, RX1 pins.

van_der_decken · January 8, 2025, 8:10pm

Hmm. Text says Mega. Picture shows an Uno.

Let's assume Mega is correct.

Are you using an Uno or ESP8266?

No?

Then these lines will not apply:

#include <SoftwareSerial.h>
SoftwareSerial softSerial(/*rx =*/10, /*tx =*/11);
#define FPSerial softSerial

but this one will:

#define FPSerial Serial1

Hmm again. So where does Serial1 come out on a Mega?

Looks like 18 and 19. Hmm.

So, in closing:

Are you using a Mega?
Where do you have the DFplayer's Tx and Rx pins hooked up to?

Edit: darn, I thought I'd replied to @wzctuba but the board says otherwise. My apologies.

runaway_pancake · January 8, 2025, 8:12pm

It's not "irrelevant".
Should be using a UART with a Mega is different. How many times have we seen this??
Sketch not matching documentation - what else could be wrong??
Get on the O.P., leave me out of it.
(Muting.)

PaulRB · January 8, 2025, 8:19pm

The sketch isn't trying to use D10, 11 or D2, 3. Its trying to use hardware UART Serial1 which is the TX1, RX1 pins (D18, 19 as pointed out by @van_der_decken ).

PaulRB · January 8, 2025, 8:20pm

You gave wrong advice. I would expect you to do the same for me (only a matter of time )

wzctuba · January 8, 2025, 8:27pm

i was using the picture from the dfplayer mini website but i just did the wires into their corresponding numbers on the mega. sorry for my looking over this. i am relatively new to Arduino

wzctuba · January 8, 2025, 8:29pm

it seems to be working when i switched it to tx1 anr rx1 .

wzctuba · January 8, 2025, 8:30pm

the weird thing is that is says time out in the serial monitor but still works

xfpd · January 9, 2025, 12:35am

Make it straight. Make a wiring diagram that accurately shows you setup and code.

runaway_pancake · January 9, 2025, 12:28pm

I noted a discrepancy and gave no advice. I guess you didn't note the OP's edits, there, did you Mr. Call-Out?

PaulRB · January 9, 2025, 4:36pm

I didn't, but reviewing them now, there was no change to the code, and the code indicates that when a mega is used, the player is expected to be connected to TX1, RX1.

I'm sorry if I have upset you @runaway_pancake. I did what I would expect others to do unto me, when I have missed something or given some incorrect advice. We are all human (occasional ChatGPT appearances aside).

wzctuba · April 5, 2025, 3:12pm

my dfplayer is playing one sound and then stopping and saying time out. here is my code

/***************************************************
DFPlayer - A Mini MP3 Player For Arduino
 <https://www.dfrobot.com/product-1121.html>
 
 ***************************************************
 This example shows the basic function of library for DFPlayer.
 
 Created 2016-12-07
 By [Angelo qiao](Angelo.qiao@dfrobot.com)
 
 GNU Lesser General Public License.
 See <http://www.gnu.org/licenses/> for details.
 All above must be included in any redistribution
 ****************************************************/

/***********Notice and Trouble shooting***************
 1.Connection and Diagram can be found here
 <https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>
 2.This code is tested on Arduino Uno, Leonardo, Mega boards.
 ****************************************************/

#include "Arduino.h"
#include "DFRobotDFPlayerMini.h"

#if (defined(ARDUINO_AVR_UNO) || defined(ESP8266))   // Using a soft serial port
#include <SoftwareSerial.h>
SoftwareSerial softSerial(/*rx =*/4, /*tx =*/5);
#define FPSerial softSerial
#else
#define FPSerial Serial1
#endif

DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

void setup()
{
#if (defined ESP32)
  FPSerial.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);
#else
  FPSerial.begin(9600);
#endif

  Serial.begin(115200);

  Serial.println();
  Serial.println(F("DFRobot DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
  
  if (!myDFPlayer.begin(FPSerial, /*isACK = */true, /*doReset = */true)) {  //Use serial to communicate with mp3.
    Serial.println(F("Unable to begin:"));
    Serial.println(F("1.Please recheck the connection!"));
    Serial.println(F("2.Please insert the SD card!"));
    while(true){
      delay(0); // Code to compatible with ESP8266 watch dog.
    }
  }
  Serial.println(F("DFPlayer Mini online."));
  
  myDFPlayer.volume(10);  //Set volume value. From 0 to 30
  myDFPlayer.play(1);  //Play the first mp3
}

void loop()
{
  myDFPlayer.volume(10);  //Set volume value. From 0 to 30
  myDFPlayer.play(1);  //Play the first mp3
  delay(2000);
  
  if (myDFPlayer.available()) {
    printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
  }
}

void printDetail(uint8_t type, int value){
  switch (type) {
    case TimeOut:
      Serial.println(F("Time Out!"));
      break;
    case WrongStack:
      Serial.println(F("Stack Wrong!"));
      break;
    case DFPlayerCardInserted:
      Serial.println(F("Card Inserted!"));
      break;
    case DFPlayerCardRemoved:
      Serial.println(F("Card Removed!"));
      break;
    case DFPlayerCardOnline:
      Serial.println(F("Card Online!"));
      break;
    case DFPlayerUSBInserted:
      Serial.println("USB Inserted!");
      break;
    case DFPlayerUSBRemoved:
      Serial.println("USB Removed!");
      break;
    case DFPlayerPlayFinished:
      Serial.print(F("Number:"));
      Serial.print(value);
      Serial.println(F(" Play Finished!"));
      break;
    case DFPlayerError:
      Serial.print(F("DFPlayerError:"));
      switch (value) {
        case Busy:
          Serial.println(F("Card not found"));
          break;
        case Sleeping:
          Serial.println(F("Sleeping"));
          break;
        case SerialWrongStack:
          Serial.println(F("Get Wrong Stack"));
          break;
        case CheckSumNotMatch:
          Serial.println(F("Check Sum Not Match"));
          break;
        case FileIndexOut:
          Serial.println(F("File Index Out of Bound"));
          break;
        case FileMismatch:
          Serial.println(F("Cannot Find File"));
          break;
        case Advertise:
          Serial.println(F("In Advertise"));
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }
  
}

here is my wiring

Terrypin · April 6, 2025, 9:51am

Are you really saying that you’ve only just discovered this after three months Or is it a sudden change?

Your earlier posts caused ambiguity so please be clear now.

wzctuba · April 6, 2025, 1:40pm

I'm sorry for any confusion I caused. I had taken a break from this project for a while and came back to it recently to build a metronome. I Think i have fixed it now though. my problem was that i was using .Wav files and they seemed to not work so i switched to .mp3 and it seems to work

system · October 3, 2025, 1:41pm

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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