//El coche fastastico

int pinArray[]={2,3,4,5,6,7};
int count=0;
int timer=100;

void setup() {
 for(count=0;count<6;count++){
  pinMode(pinArray[count],OUTPUT);
 }
}

void loop()  {
  for(count=0;count<6;count++) {
  digitalWrite(pinArray[count], HIGH);
  delay(timer);
  digitalWrite(pinArray[count], LOW);
  delay(timer);
 
}

for(count=5;count>=0;count--){
  digitalWrite(pinArray[count], HIGH);
  delay(timer);
  digitalWrite(pinArray[count], LOW);
  delay(timer);

 }
}