#include <Servo.h>
Servo myservo;
Servo myservo2;

int potensio = 0,
    revPot   = 0;

void setup()
{
  myservo.attach(9);
  myservo2.attach(8);

  pinMode(A0, INPUT);
}

void loop()
{
  potensio = analogRead(A0);
  revPot   = map(potensio,0, 1023, 180, 0);
  potensio = map(potensio,0 , 1023, 0 , 180);
  
  myservo.write(potensio);
  myservo2.write(revPot);
  Serial.println(revPot);
  delay(200);
}