Arduino with nextion hmi

Projects General Guidance
1

I would like to ask everyone why when I press the B1 button, the value at N0 does not change. I am communicating with HMI Nextion and Arduino.

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Can everyone tell me why when I press button B1, the value at N0 does not change? I am communicating with HMI Nextion and Arduino. I have opened the serial monitor, but it does not recognize my button press. Can someone help me with the button configuration and the program?

2

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