int ledV=9;
int ledA=8;
int ledR=7;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(ledV, OUTPUT);
pinMode(ledA, OUTPUT);
pinMode(ledR, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int valor = analogRead(A0);
Serial.println(valor);
int nivel = map(valor,0,1023,1,4);
if(nivel==1)
{
  digitalWrite(ledV, HIGH);
  digitalWrite(ledA, LOW);
  digitalWrite(ledR, LOW);
}else{
  if(nivel==2)
  {
    digitalWrite(ledA, HIGH);
    digitalWrite(ledV, LOW);
    digitalWrite(ledR, LOW);

  }else{
    digitalWrite(ledR, HIGH);
    digitalWrite(ledA, LOW);
    digitalWrite(ledV, LOW);
  }
}
Serial.println(nivel);
delay(200);

}