void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(25, OUTPUT);
  pinMode(26, OUTPUT);
}

void loop() {
  digitalWrite(25,HIGH);
  delay(500);
  digitalWrite(25,LOW);
  digitalWrite(26,HIGH);
  delay(500);
  digitalWrite(26, LOW);

  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}