#include <Wire.h>
#include <LiquidCrystal_I2C.h> 
LiquidCrystal_I2C lcd(0x27, 16, 2);

int potpin = 4;
int valpot = 0;
int mappot = 0;
int led1 = 19;
int led2 = 18;
int LED_BUILTIN = 2;

void setup() {
  lcd.init();
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
   valpot = analogRead(potpin);
  mappot = map(valpot, 0, 4095, 0, 100);
lcd.setBacklight(HIGH);
  lcd.setCursor(1,0);
  lcd.print("valpot = ");
  lcd.print(valpot);
  lcd.setCursor(1,1);
  lcd.print("porcen = ");
  lcd.print(mappot);
  if(mappot > 50){
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
  }
   if(mappot < 50){
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
  }
  if(mappot > 25 && mappot < 75){
    digitalWrite(LED_BUILTIN, HIGH);
    delay(100);
    digitalWrite(LED_BUILTIN, LOW);
    delay(100);
  }
  else{
    digitalWrite(LED_BUILTIN, LOW);
  }
}