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

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

void setup() {
  lcd.init(); // initialize the lcd
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("LDR Resistance:");
}

void loop() {
  int sensorValue = analogRead(34); // Use the correct analog pin
  float voltage = sensorValue * (3.3 / 4095.0);
  float resistance = (3.3 - voltage) * 10000 / voltage; // Calculate resistance
  lcd.setCursor(0, 1);
  lcd.print(resistance);
  lcd.print(" Ohms");
  delay(500);
}