void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(16, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(27, INPUT);
}

void loop() {
int s = digitalRead(27);

if(s==1)

{
  
  digitalWrite(12, HIGH);
  delay(50);
  digitalWrite(12, LOW);
  delay(50);
  digitalWrite(13, HIGH);
  delay(50);
  digitalWrite(13, LOW);
  delay(50);
  digitalWrite(14, HIGH);
  delay(50);
  digitalWrite(14, LOW);
  delay(50);
  digitalWrite(15, HIGH);
  delay(50);
  digitalWrite(15, LOW);
  delay(50);
  digitalWrite(16, HIGH);
  delay(50);
  digitalWrite(16, LOW);
  delay(50);
  digitalWrite(17, HIGH);
  delay(50);
  digitalWrite(17, LOW);
  delay(50);

}

else // thish speeds up the simulation 

{

  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  digitalWrite(14, LOW);
  digitalWrite(15, LOW);
  digitalWrite(16, LOW);
  digitalWrite(17, LOW);

}

delay(50);

}