My dfplayer doesn't work

Using Arduino General Electronics
1

Hi everyone, I've tried everything to get it working, but my Arduino Nano setup with the DFPlayer simply doesn't work. I don't know what I did wrong. I'm attaching a picture and the code. Please, someone help.
(Problem:1. Please recheck the connection!,2. Please insert the SD card!)

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

SoftwareSerial mySerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;

void setup() {
  mySerial.begin(9600);
  Serial.begin(115200);

  Serial.println();
  Serial.println(F("DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ..."));

  if (!myDFPlayer.begin(mySerial)) {  // Use softwareSerial to communicate with DFPlayer Mini
    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);
  }
  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.volume(30);  // Set volume to maximum (0-30)
  myDFPlayer.play(1);     // Play the first MP3 file 
}

void loop() {
  // No need for code here in this simple test
}

arduino
arduino800×600 174 KB

IMG_20240607_134343140
IMG_20240607_1343431401920×2560 549 KB

IMG_20240607_134413310
IMG_20240607_1344133101920×2560 394 KB

2

Welcome to the forum

What does it do ? Are there any messages in the serial monitor ?

3

Hello!
it says:
"DFPlayer Mini Demo
Initializing DFPlayer ...
Unable to begin:

  1. Please recheck the connection!
  2. Please insert the SD card!"
    and A dfplayer LED doesn't light up
4

It looks like you have 10 and 11 swapped.
Rx should go to TX
Tx should go to RX

1 Like
5

If you want to run your DF Player Mini without an Arduino, all you need is VCC, GND and a shorting pin... See "I/O MODE" on this web page...

6

Watch DFPlayer working!! | Streamable Thank you so much!

7

Screenshot_20240607-195348-130
Screenshot_20240607-195348-1301012×1039 76.9 KB

That looks like a piece of iron, maybe a vice?

Never rest live circuits on metal surfaces! A short circuit could destroy the DFplayer module in the blink of an eye.

8

Hello, I just put it there for the picture so that everything would be visible, I was careful about that! (It was turned off when the picture was taken)

1 Like
9

Hi! Thanks for the hint. That helped me to make DFPlayer work after 2 hours of debugging. How did you figure out? OP did everything in accordance with the schematics, I believe. I mean RX was connected to D10, which is initialized as RX, and TX to D11, initialized as TX.

SoftwareSerial mySerial(10, 11); // RX, TX
10

It was explained

One sends stuff the other receives.

The other sends stuff the first receives.

a7

1 Like