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

  pinMode(25, OUTPUT);
  pinMode(33, OUTPUT);
}

void loop() {

  digitalWrite(25, HIGH);
  Serial.println("RED LED ON");
  delay(4000);
  digitalWrite(25, LOW);
  Serial.println("RED LED OFF"); 
  digitalWrite(33, HIGH);
  Serial.println("GREEN LED ON");
  delay(4000);
  digitalWrite(33, LOW);
  Serial.println("GREEN LED OFF");
}