help me with Esp32 Rx Tx problem

PLEASE NOTE:- I'm working with ESP32 for the first time, I have 3-4 months experience with Arduino


I was trying to play an mp3 audio using ESP32 and DFPlayerMini but every time it shows these two errors:-

Unable to begin:

[login to view URL] recheck the connection!

[login to view URL] insert the SD card!

Link for the code is available at GITHUB

I know only these things about it-

The SD card is inserted and working perfectly with ARDUINO UNO.

The Rx and Tx is causing the problem (I'm using p16 and p17 as Rx and Tx respectively) also, I tried interchanging the Rx and Tx but no luck.

I don't know what is the model of the board as I purchased it from a local store but I know this (I could understand these only) -



ESP Dev Module (I uploaded the code with this and the code was uploaded)

The Pins are not like shown in the pinouts available online; For eg - I got to know that P16 and P17 are the Rx2 and Tx2

Please help me with this supposing me to be a dumb newbie :)


Beceriler: Arduino, Mikrodenetleyici, Elektronik, C Programlama, Yazılım Mimarisi

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İşveren Hakkında:
( 5 değerlendirme ) UDAIPUR, India

Proje NO: #27482976

Bu iş için 6 freelancer ortalamada ₹276/saat teklif veriyor


Dear Client I understand you are novice in this field but once we all were, so please DM me and let me have a privilegeto help you.

₹250 INR / saat tutarından itibaren
(37 Değerlendirme)

Thanks for posting this issue. I have lot many years of experience working on TX-RX for intercommunication. I can surely help u getting resolution. Please visit my website for more details at : [login to view URL] Daha Fazla

₹250 INR / saat tutarından itibaren
(12 Değerlendirme)

I understand your requirement and i have already build this type of system with esp32, bmp 280 sensor, and temperature sensor. 3 days are taken by component shipement and I can give you this system easily by 1 week. I Daha Fazla

₹222 INR / saat tutarından itibaren
(0 Değerlendirme)

HI Hiring Manager, Full Stack Developer, Specialized in IoT with LABView,MQTT, STM32 , ESP32 Android App , IOS App and Web Development with AWS We already have multiple products that we've manufactured but we're looki Daha Fazla

₹350 INR / saat tutarından itibaren
(0 Değerlendirme)

Hi! It seems like you have some trouble with the pin configuration for your particular board. Come over on the chat and I will help you out. Regards, Abhyudai

₹250 INR / saat tutarından itibaren
(0 Değerlendirme)

Hello I am Himanshu Agrawal I have 4 year industry experience. I have developed new product using Esp 32

₹333 INR / saat tutarından itibaren
(0 Değerlendirme)