// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>
const int potPin = A0;
const int backlightpin = 13;
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  lcd.begin(16, 2);
  // you can now interact with the LCD, e.g.:
  lcd.print("Hello World!");
}

void loop() {
  int potValue = analogRead(potPin);
  int brightness = map(potValue, 0, 1023, 0, 255);

  analogWrite(backlightpin, brightness);
  delay(100);
}