#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27 for 16 chars and 2 line display

#define POT_PIN 34

void setup() {
  Serial.begin(115200);

  lcd.init(); // initialize the LED
  lcd.backlight();  // turn on the LCD screen

  lcd.setCursor(0, 0);
  lcd.print("Potentiometer Val");
  lcd.setCursor(0, 1);
  lcd.print("Reading...");
  delay(2000);
  lcd.clear();
}

// first col and zeroth row lcd.serCursor(1,0)
void loop() {
  int potValue = analogRead(POT_PIN);
  int percentage = map(potValue, 0, 4095, 0, 100);
  Serial.print("Potentiometer Value: ");
  Serial.println(potValue);

  lcd.setCursor(0, 0);
  lcd.print("Raw Value: ");
  lcd.print(potValue);

  lcd.setCursor(0, 1);
  lcd.print("Percentage: ");
  lcd.print(percentage);
  lcd.print(" %");

  delay(500);  
}