void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(5, OUTPUT);
  pinMode(17, OUTPUT);
}

void loop() {
  digitalWrite(5,HIGH);
  digitalWrite(17,HIGH);
  delay(2000); 
  digitalWrite(5,LOW);
  digitalWrite(17,LOW);
  delay(2000); 
}