void setup()
{
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(14,OUTPUT);
  pinMode(27,OUTPUT);
  pinMode(23, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(0, OUTPUT);
}
void loop()
{
  digitalWrite(12, HIGH);
  Serial.println("WAIT");
  digitalWrite(0, HIGH);
  Serial.println("GO");
  delay(7000);
  digitalWrite(12, LOW);
  digitalWrite(0, LOW);
  
  digitalWrite(14, HIGH);
  digitalWrite(21, HIGH);
  Serial.println("READY");
  delay(6000);
  digitalWrite(14, LOW);
  digitalWrite(21, LOW);
  
  digitalWrite(27, HIGH);
  Serial.println("WAIT");
  digitalWrite(23, HIGH);
  Serial.println("GO");
  delay(4000);
  digitalWrite(27, LOW);
  digitalWrite(23, LOW);

digitalWrite(14, HIGH);
  digitalWrite(21, HIGH);
  Serial.println("READY");
  delay(6000);
  digitalWrite(14, LOW);
  digitalWrite(21, LOW);
}