text: // Variadic macros used to print information in de-bugging mode
  // from LarryD, Arduino forum
  
  #pragma once
  // un-comment this line to print the debugging statements
  //#define DEBUG
  
  #ifdef DEBUG
    #define DPRINT(...)    Serial.print(__VA_ARGS__)
    #define DPRINTLN(...)  Serial.println(__VA_ARGS__)
  #else
    // define blank line
    #define DPRINT(...)
    #define DPRINTLN(...)
  #endif
  