Dfplayer with arduino nano project

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1

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I have a arduino nano v3.0 with a dfplayer mini and a power supply with 3.3V or 5V.I also have the speaker 3W with 8 ohm.But i cant seem to make it work.I tried it but it looks like my dfplayer mini dosent get detected by my code of arduino
This is just a test code cuz i plan to change that

#include <SoftwareSerial.h>
#include <DFRobotDFPlayerMini.h>

SoftwareSerial dfSerial(10, 11); // RX, TX
DFRobotDFPlayerMini player;

void setup() {
  Serial.begin(9600);
  dfSerial.begin(9600);

  Serial.println("Initializing DFPlayer...");
  if (!player.begin(dfSerial)) {
    Serial.println("DFPlayer not found!");
    while(true);
  }
  Serial.println("DFPlayer ready!");
}

void loop() {}
2

Verify TX and RX are correct (one swap will verify).

You must solder the header pins. You can not just lay the board on the pins.

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3

You are also missing a 1K resistor going to the RX pin on the DF module.

Can you take another picture from a different angle. I don’t see the ground pin connected to the DF module.

4

Im new to this so i didnt know.But i dont think this is the problem if so i can try to do it

5

So it wont work without the 1k resistor?here are some photos

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6

You may not think it is the problem, but it is. You have no electrical contact.

Think about this. The holes are larger than the pins. At 5 volts, the electrons are not going to jump across the air gap.

7

Oh ok bro i will try to do it later and see lets hope nothing is wrong in the wiring or stuff idk.Btw i have the power supply but im not using it i think do i need any wiring there or no?

8

So where is the 1k?

Is your mSD card fully inserted?

9

It is not a matter of "let's see." Solder the pins, or everything else you do, including questiins, is pointless.

11

Did you correct the wrong Rx/Tx pins shown in your photo? The TX pin of the Nano, pin 11, should be connected (via a 1k resistor as advised several times) to the RX pin of the DFR module (next to the 5V pin).

Of course, the soldering comes first!

12

No no i meant to do the work later​:sweat_smile: cuz i wasnt home and was so busy these days.I will try tomorrow i think and let you guys know.I will try to find a resistor too.

13

Im gonna try to find a resistor somewhere and inform you when i do all of that.

14

Do you also have a battery pack or some sort of external power supply other than your computer’s USB port? The DFPlayer is a bit of a power hog, so it would be best if it had its own power supply and a smoothing capacitor of at least 10uf. Just make sure the grounds are connected between the arduino and the DFPlayer, otherwise you may have unpredictable behavior.

15

I use a charger into the power supply if you look closely to the power suply there is a black charger hole there.But i plan to change the power suply maybe instead of the charger maybe get a 3 battery 1.5V each if that works?

16

Hey i just tried it with 1k ohm resistor but it dosent seem to work again.So last option is to solder the pins wich im gonna do later

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17

That kinda should have been the first thing you did, but to each their own.

18

Will the resistor work like that but soldered or in the other end it needs a wire

19

The pins on the Arduino don’t look to be soldered yet. As for the resistor, it’s not the best way you could have done that but it is a way…

20

How can i link the resistor in a better way

21

Plug the resistor lead into a breadboard socket and the jumper pin into a breadboard socket connected to the one that the resistor is plugged into

But before you worry about that SOLDER THE PINS TO THE NANO !