Where to go from here :S

Using Arduino Project Guidance
5

Many thanks peter, You convinced me to look at my code again and I found a memory leak and fixed it although by my maths i think there still some stuff floating around.

I've rectified my code to include some ram usage output:

#include <SoftwareSerial.h>
#include <TinyGPS.h>
#include <SdFat.h>
#include <GPSFilter.h>

int freeRam();
void setup()
{
  Serial.begin(115200);
  Serial.println("Initial RAM");
  Serial.println(freeRam());
  TinyGPS gps;
  Serial.println(F("RAM After tinygps"));
  Serial.println(freeRam());
  SdFat sd;
  Serial.println(F("RAM after sdfat"));
  Serial.println(freeRam());
  SdFile sdout;
  Serial.println(F("RAM after SDFILE"));
  Serial.println(freeRam());
  GPSFilter f(1);
  Serial.println(F("RAM After GPS Filter"));
  Serial.println(freeRam());
}
void loop(){
  
}
int freeRam () {
  extern int __heap_start, *__brkval; 
  int v; 
  return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval); 
}

I ran this on my mega just to give a full output:

Initial RAM
6350
RAM After tinygps
6350
RAM after sdfat
6350
RAM after SDFILE
6350
RAM After GPS Filter
5590

Now for some maths, 8KB of SRAM on a mega so after file inclusion i have 6350 left, so 1650 used for library inclusion and 350 remaining SRAM if i use an UNO.

Now Your going to tell me my filter is huge :frowning: and understand this however i'd really rather not part with it. It works nicely.