Displaying Lat/Long on OLED from GPS module

Projects General Guidance
1

I am having trouble getting this to work on an Arduino UNO. Whats wrong with my code? If I remove the Adafruit include and OLED code it works as expected..

#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <Adafruit_CharacterOLED.h>

static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 4800;

// The TinyGPS++ object
TinyGPSPlus gps;

// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
// Initialize the library with the OLED hardware
Adafruit_CharacterOLED lcd(OLED_V2, 6, 7, 8, 9, 10, 11, 12);

void setup()
{
  lcd.begin(16, 2);
  Serial.begin(115200);
  ss.begin(GPSBaud);
}

void loop()
{
  // This sketch displays information every time a new sentence is correctly encoded.
  while (ss.available() > 0)
    if (gps.encode(ss.read()))
      displayInfo();

  if (millis() > 5000 && gps.charsProcessed() < 10)
  {
    Serial.println(F("No GPS detected: check wiring."));
    while(true);
  }
}

void displayInfo()
{
  Serial.print(F("Location: ")); 
  if (gps.location.isValid())
  {
    // Print to OLED
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Lat: ");
    lcd.print("29.189556");
    lcd.setCursor(0, 1);
    lcd.print("Lon: ");
    lcd.print("81.052366");
    // Print to Serial
    Serial.print(gps.location.lat(), 6);
    Serial.print(F(","));
    Serial.print(gps.location.lng(), 6);
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.print(F("  Date/Time: "));
  if (gps.date.isValid())
  {
    Serial.print(gps.date.month());
    Serial.print(F("/"));
    Serial.print(gps.date.day());
    Serial.print(F("/"));
    Serial.print(gps.date.year());
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.print(F(" "));
  if (gps.time.isValid())
  {
    if (gps.time.hour() < 10) Serial.print(F("0"));
    Serial.print(gps.time.hour());
    Serial.print(F(":"));
    if (gps.time.minute() < 10) Serial.print(F("0"));
    Serial.print(gps.time.minute());
    Serial.print(F(":"));
    if (gps.time.second() < 10) Serial.print(F("0"));
    Serial.print(gps.time.second());
    Serial.print(F("."));
    if (gps.time.centisecond() < 10) Serial.print(F("0"));
    Serial.print(gps.time.centisecond());
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.println();
}
2

If I remove the Adafruit include and OLED code it works as expected..

This suggests that you are running out of memory.

http://playground.arduino.cc/Code/AvailableMemory

The other possibility is that the mysterious library uses the same pins as the GPS. No link == no help, but it is an avenue you can explore.

Edit: Never mind that last bit. I see that that is not the case.