 
 void setup(){
 
-  Serial.begin(9600);
+  #ifndef DO_NOT_SHOW_SERIAL_OUT
+    Serial.begin(9600);
+  #endif
   
  //Turn off TX and RX pin
   pinMode(RXLED_PIN, OUTPUT);

  }
   
  timeLastPressedRightButton = currentMillis;
  
  Serial.println("Right Set Button Pressed");
   
  switch(currentState)
  {

#include "constants.h"
#include "tune.h"

#define DO_NOT_SHOW_SERIAL_OUT //Comment this line if you want serial debugging for button press

#define MIN_BATTERY_MILLIVOLT 3300 //You may need to calibrate this
#define MAX_BATTERY_MILLIVOLT 4300 //You may need to calibrate this

