Problem with ESP8266 (NodeMcU) and DFPlayer

Need Help With My Project
1

Hallo,

Here is my configuration:

  • Raspberry Pi Zero W with private Blynk Cloud in my WLAN.
  • One DFPlayer with NodeMcu with Blynk App with this software
  • Second DFPlayer with NodeMcu with Blynk App with this software
  • Third DFPlayer with NodeMcu with Blynk App with this software

Numer “One”, “Second” and “Third” are customized in the same Blynk App ( + New Poject)
Some other ESP8266 (NodeMcu) for on / off LEDS in the same Blynk App are working fine.

The number “One” DFPlayer works fine with no problems. The “Second” and “Third” DFPlayer did not work every time. I can see number “One” and “Second” in the Arduino IDE Serial Monitor.

All three ESP8266 (NodeMcu) works with the same virtual pine VPIN_PLAYTRACK V4, VPIN_MUSICPLAYER V5, VPIN_VOLUME V6 and VPIN_EQUALIZER V7. Every ESP8266 has its own “char auth”. I have changed the ESP8266 and the DFPlayer.

Does anyone has an idea why the number “Second” and “Third” did not work?

Here you will find the code:
(https://github.com/srikargodavarthi/HOBBY-KIT/blob/master/DF-PLAYER/BLYNK_DF_PLAYER.ino)

Thank you for help
Michael
2

What exactly does this mean?

Pete.

3

Hi,

could these be the Problem why the second and third installation did not work?

4

I don’t know, your statement makes no sense, which is why I asked for clarification.

Pete.

5

Pete,
what is a solution why the second and third ESP8266 with DFPlayer are not working only sometimes random?

6

Hey there.

Can you show your setup please ?
How do you connect everything together, take some screenshots.

7

Hi John93,
the setup is the same at the Blynk App and wiring from ESP8266 and DFPlyer. Number „One“ works and then I customzed the „Second“ and it did work random. After that number „Third“ has the same problem.

Thanks for help
Michael

8

Are you connecting 3 DFPlayer to the same nodemcu ?

9

Hi John93,

I have changed at number „Second“ the ESP8266 and the DFPlayer with the same software. The same problem as discribed. Is it a software problem in the sketch or a problem in the Blynk App?

10

Can you show me how do you connect all parts together please ?
Show me your wiring diagram.

11

Hi John93,
here you can see my wiring from the number “Second” ESP8266 with DFPlayer. I have changed the working micro-SDcard and it is the same result:

ESP8266-DFPlayer
ESP8266-DFPlayer1500×1125 453 KB

I think the sketch did not start the DFPlayer to read the mp3-files … But what is the reason?

Thanks for help
Michael