 // pins used 
 //lcd  8, 9, 4, 5, 6, 7 A0
 //gps 3,4
-//mag a4 a5
+//mag A4 A5
+//Heading Adjust A2
 
 #include <LiquidCrystal.h>
 #include <SoftwareSerial.h>

#define MODE_NAVIGATE 2
#define NUMBER_OF_MODES 3
int mMode = MODE_MENU;

//Store Waypoints
#define MAX_WAYPOINTS 20

      newData = true;
    }
    updateHeading();
    //Force refresh after set amount of time
    unsigned long currentMillis = millis();
    if(currentMillis - lastUpdate > REFRESH_RATE){
       lastUpdate = currentMillis;
       newData = true;
    } 
    updateDisplay(newData);

    //Update heading offset
