Nextion communication with arduino mega 2560 suddenly went off

[Shan1401]

Hi guys, this code below is the code I ran in my arduino with proper wiring. When I ran it for the first time on my nextion NX3224F024_011, It worked. then when I adjust the device in the editor to go wih NX8048K050_011, and connected properly. it didn't work. then when I open a new file and did the same thing, it didn't work as well. When putting it again in my NX3224F024_011, it didn't work as well.

#include <EasyNextionLibrary.h>

// Create an EasyNex object
EasyNex myNex(Serial1);



void setup() {
  // Begin serial communication with the Nextion display
  Serial.begin(9600);
  
  // Initialize the EasyNex library
  myNex.begin(9600);
  delay(500);
  myNex.writeStr("t0.txt", "Hello");
}

void loop() {
  // Listen for events from the Nextion display
  myNex.NextionListen();
}

Arduino | Nextion
GND | GND
RX | TX
TX | RX
5V | 5V

HELLO.zip (18.3 KB)

I have uploaded the file here. Please help me. I don't what to do. I even change the wires with the same connections

@cattledog pls help

[cattledog]

@Shan1401

delay(500);

What do you see if you take the delay to 2000.
In this previous thread, I did not get good results at 500.

https://forum.arduino.cc/t/nextion-communication-with-arduino-mega-2560/1322115/3

[Shan1401]

I still couldn't get it.
Its still blank

[cattledog]

Have you selected the correct Device ID for the Nextion that you are using?

I can't see anything wrong with the HMI file, and indeed if you go into debug and type t0.txt="Hello" into the instruction panel the text does change.

[Shan1401]

the device id is the same. I checked alrdy. i still don't know why. Could be any problem with the nextion or arduino??

[cattledog]

You can try with Serial2 or Serial3 which use different pins incase you have damaged Serial1.

[Shan1401]

it worked.
Thank you