void setup() {
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  Serial.println("Digite um número de 0 a 9");
  int controle = 0;
  while (Serial.available() == 0) {}
  controle = Serial.parseInt();
  switch (controle) {
    case 1:
    Serial.println("Pisca 1 vez");
      digitalWrite(12, HIGH);
      delay(250);
      digitalWrite(12, LOW);
      delay(250);
      break;
    case 2:
    Serial.println("Pisca 2 vezes");
      for ( int i = 0; i < 2; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 3:
  Serial.println("Pisca 3 vezes");
      for ( int i = 0; i < 3; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 4:
    Serial.println("Pisca 4 vezes");
      for ( int i = 0; i < 4; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 5:
    Serial.println("Pisca 5 vezes");
      for ( int i = 0; i < 5; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 6:
    Serial.println("Pisca 6 vezes");
      for ( int i = 0; i < 6; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 7:
    Serial.println("Pisca 7 vezes");
      for ( int i = 0; i < 7; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 8:
    Serial.println("Pisca 8 vezes");
      for ( int i = 0; i < 8; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    case 9:
    Serial.println("Pisca 9 vezes");
      for ( int i = 0; i < 9; (i++)) {
        digitalWrite(12, HIGH);
        delay(250);
        digitalWrite(12, LOW);
        delay(250);
      }
      break;
    default:
      Serial.println("Erro, tente novamente");
      break;
  }
}
void loop() {}