void fans() {

  //We're running fans, depending on whether we're going right/left, forward/backward.
  if (vel.y <  0) {
   fan1 = int(map(vel.y,0,-20,920,1023)); //Straight ahead, 9
  } else {
  fan4 = int(map(vel.y,0,20,900,1023)); ; //Backward, 3
  }

  if (fan1 < 1000 && fan4 < 1000) {
  if (vel.x < 0) {
   fan3 = int(map(vel.x,0,-20,900,1023)); //To the left, 6
  } else {
  fan2 = int(map(vel.x,0,20,900,1023)); //To the right, 5
  }
  }

//We're getting the fans going at full blast for 5 seconds
  if (millis() < 5000) {
  port.write('R');
  port.write(1023); //FORWARD
  port.write('G');
  port.write(1023); //RIGHT
  port.write('B');
  port.write(1023); //LEFT
  port.write('Q');
  port.write(1023); //BACKWARD
  port.write('\n');
  }

  ///We're writing to the fans here
  port.write('R');
  port.write(fan1); //FORWARD
  port.write('G');
  port.write(fan2); //RIGHT
  port.write('B');
  port.write(fan3); //LEFT
  port.write('Q');
  port.write(fan4); //BACKWARD
  port.write('\n');
}