void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(5,OUTPUT);
  pinMode(14,OUTPUT);
  pinMode(12,OUTPUT);
}

void loop() 
{
digitalWrite(5,HIGH);
digitalWrite(12,LOW);
delay(1000);
digitalWrite(14,HIGH);
digitalWrite(5,LOW);
delay(1000);
digitalWrite(12,HIGH);
digitalWrite(14,LOW);
delay(1000);
}