#define DEBUG 1 // output debug to serial

void setup() {

  Serial.begin(9600);

  // put your setup code here, to run once:
  #ifdef DEBUG
    Serial.println("running setup()");
    delay(2000);
  #endif
}

void loop() {
  // put your main code here, to run repeatedly:
  #ifdef DEBUG
    Serial.println("running loop()");
    delay(1000);
  #endif
}