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Hello Ashish
If you are using I2C try using this library:
https://community.controllino.com/forums/discussion/lcd204-keypad-shield/
The code is below code below:
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address
void setup()
{
lcd.begin(20,4);
lcd.setCursor(3,0);
lcd.print(“Hello YouTube!”);
lcd.setCursor(8,1);
lcd.print(“****”);
lcd.setCursor(0,2);
lcd.print(“This is a demo text”);
lcd.setCursor(8,3);
lcd.print(“****”);
}
void loop()
{
}