Hello, I'm trying to use an MP3 player on my ESP32 (Wemos D1 Mini Esp32). Unfortunately, it doesn't work. Here is my wiring diagram and my code. Do you see an error? Thank you! :slight_smile: [image] #include <Arduino.h> #include "DFRobotDFPlayerMini.h" #define RXD2 16 #define TXD2 17 Hardw…

Hello again everyone, I was able to solve the problem. I just realized that my MP3 player had a problem: the VCC and RX pins were soldered together. I fixed this issue and now it works. I will nevertheless take your remarks into account and try to improve my circuit and my code according to your…

First and major fault is the absence of powering.

[image] nebetbastet: HardwareSerial mySoftwareSerial(1); Very strange naming.

Hi Railroader, I am not sure to understand your message. My mp3 player is powered by the ESP32.

[image] nebetbastet: HardwareSerial mySoftwareSerial(1); Maybe. I took example on this sketch: pcbreflux/espressif/blob/master/esp32/arduino/sketchbook/ESP32_DFPlayer_full/ESP32_DFPlayer_full.ino /*************************************************** DFPlayer - A Mini MP3 Playe…

[image] nebetbastet: mp3 player is powered by the ESP32 Number one: The ESP32 has no powering. As a consequence: Does the ESP32 have power/current capacity for that when it has no powering according to Your "wiring"? No.

[image] nebetbastet: I don't know if it's a language barrier issue (I'm not an English speaker), but I have the feeling that you're quite pissed off and I can't understand why. **Pissed off is too much but the mistake is You don't show how You power the project. Powering is important and way to…

[image] nebetbastet: Maybe. I took example on this sketch: This is not a great example of how to use the additional hardware ports on the ESP32. I suspect at some point they were using Software Serial, then switched to hardware, and were too lazy to go back and tidy things up. Get rid of th…

[image] red_car: why do you have this resistor in the circuit? It's a holdover, a TX 5V necessity. The ESP32 is 3V so, correct, it should not be used.

ESP32 and DFPlayer Mini MP3 player

Projects General Guidance

anon85221860 July 2, 2022, 9:49pm 10

It's a holdover, a TX 5V necessity.
The ESP32 is 3V so, correct, it should not be used.

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ESP32 and DFPlayer Mini MP3 player

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