#include <LiquidCrystal.h>

LiquidCrystal lcd(21, 19, 18, 5, 4, 2);
const int potentiometerPin = A0;  // Analog input pin for the potentiometer

void setup()
{
  lcd.begin(16, 2);
  lcd.print("Akshat Yadav");
}

void loop()
{
  lcd.clear();  // Clear the entire screen

  lcd.setCursor(0, 0);
  lcd.print("Akshat Yadav");

  lcd.setCursor(0, 1);
  lcd.print("Cont: ");

  // Read the value from the potentiometer
  int potValue = analogRead(potentiometerPin);

  // Map the potentiometer value to a contrast range (0-255)
  int contrast = map(potValue, 0, 1023, 0, 255);

  // Set the LCD contrast
  lcd.command(0x21);      // LCD extended command mode
  lcd.command(0x80 | contrast);  // Set contrast (0-127)
  lcd.command(0x20);      // LCD basic command mode

  lcd.print(contrast);
  delay(1000);  // Delay to prevent rapid LCD updates
}

// Send a command to the LCD
void LiquidCrystal::command(uint8_t value) {
  send(value, LOW);
}