Ardubcar

char val=0; // Variable que almacena datos del bluetooth

void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
}

void loop() {
  if( Serial.available() ) { // Si estamos listos para recibir datos
    val = Serial.read();  // los recibimos y almacenamos
  }
  if( val == 'F' ){         // si se recibe una F...
    analogWrite(3, 150);
    analogWrite(11, 255);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    digitalWrite(6, HIGH);
    digitalWrite(7, LOW);
  } else if (val == 'B') {   //si es B...
    analogWrite(3, 150);
    analogWrite(11, 255);
    digitalWrite(4, LOW);
    digitalWrite(5, HIGH);
    digitalWrite(6, LOW);
    digitalWrite(7, HIGH);
  } else if (val == 'L') { //Si es L...
    analogWrite(3, 255);
    analogWrite(11, 0);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    digitalWrite(6, HIGH);
    digitalWrite(7, LOW);
  } else if (val == 'R') {  //Si es R...
    analogWrite(3, 0);
    analogWrite(11, 255);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    digitalWrite(6, HIGH);
    digitalWrite(7, LOW);
  } else {       //Si es otra cosa o nada...
    analogWrite(3, 0);
    analogWrite(11, 0);
  }
}