#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

int pon;

void setup() {
  pinMode(33, INPUT);
  pinMode(25, OUTPUT);
  lcd.init();
  lcd.backlight();
}

void loop() {
  pon = map(analogRead(33), 0, 4095, 0, 100);
  
  lcd.setCursor(0,0);
  lcd.println("Pon: ");
  lcd.print(pon);
  lcd.print("  %     ");

  if(pon > 50){
    digitalWrite(25, HIGH);
  } else {
    digitalWrite(25, LOW);
  }
  delay(10); 
}