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

void setup(){ 
 lcd.begin(16,2);
 myservo.attach(9);
 myservo.write(0);
}

void loop() { 
  for(int i=0;i<=90;i++){
   myservo.write(i);
   lcd.clear();
   lcd.print("angulo: ");
   lcd.setCursor(2,1);
   lcd.print(i);
   delay(80);
  }
  for(int j=90;j>0;j--){
   myservo.write(j);
   lcd.clear();
   lcd.print("angulo: ");
   lcd.setCursor(1,3);
   lcd.print(j);
   delay(80);
  }
}