Datalogger circuit using ESP8266 NodeMCU and Neo6m Gps Module

Circuit Diagram

Code

#include <Arduino.h>
#if defined(ESP32)
  #include <WiFi.h>
#elif defined(ESP8266)
  #include <ESP8266WiFi.h>
#endif
#include <Firebase_ESP_Client.h>

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

TinyGPSPlus gps;
SoftwareSerial SerialGPS(4, 5); 


//Provide the token generation process info.
#include "addons/TokenHelper.h"
//Provide the RTDB payload printing info and other helper functions.
#include "addons/RTDBHelper.h"

// Insert your network credentials
#define WIFI_SSID "Wifi_SSID"
#define WIFI_PASSWORD "Wifi_PASSWORDy2dkmeq7"


#define USER_EMAIL "auth_email"
#define USER_PASSWORD "auth_pass"
// Insert Firebase project API Key
#define API_KEY "API KEY"

// Insert RTDB URLefine the RTDB URL */
#define DATABASE_URL "Database_link" 

//Define Firebase Data object
FirebaseData fbdo;

FirebaseAuth auth;
FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;
int count = 0;
bool signupOK = false;

//SoftwareSerial SerialGPS(4, 5); 
float Latitude , Longitude;
//int year , month , date, hour , minute , second;
//String DateString , TimeString , LatitudeString , LongitudeString;

void setup(){
  Serial.begin(115200);
  SerialGPS.begin(9600);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED){
    Serial.print(".");
    delay(300);
  }
  Serial.println();
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  /* Assign the api key (required) */
  config.api_key = API_KEY;


  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;
  /* Assign the RTDB URL (required) */
  config.database_url = DATABASE_URL;

  /* Sign up */
//  if (Firebase.signUp(&config, &auth, "", "")){
//    Serial.println("ok");
//    signupOK = true;
//  }
//  else{
//    Serial.printf("%s\n", config.signer.signupError.message.c_str());
//  }

  /* Assign the callback function for the long running token generation task */
  config.token_status_callback = tokenStatusCallback; //see addons/TokenHelper.h
  
  Firebase.begin(&config, &auth);
  Firebase.reconnectWiFi(true);
}

void loop(){
  if(SerialGPS.available() > 0){
    if (gps.encode(SerialGPS.read()))
    {
      if (gps.location.isValid())
      {
        Latitude = gps.location.lat();
//        LatitudeString = String(Latitude , 6);
        Longitude = gps.location.lng();
//        LongitudeString = String(Longitude , 6);
      
    
     if (Firebase.ready()  && (millis() - sendDataPrevMillis > 15000 || sendDataPrevMillis == 0)){
    sendDataPrevMillis = millis();
    // Write an Int number on the database path test/int
    if (Firebase.RTDB.setFloat(&fbdo, "test/gauransh/Latitude", Latitude)){
      Serial.println("PASSED");
      Serial.println("PATH: " + fbdo.dataPath());
      Serial.println("TYPE: " + fbdo.dataType());
    }
    else {
      Serial.println("FAILED");
      Serial.println("REASON: " + fbdo.errorReason());
    }
    count++;
    
    // Write an Float number on the database path test/float
    if (Firebase.RTDB.setFloat(&fbdo, "test/gauransh/Longitude", Longitude)){
      Serial.println("PASSED");
      Serial.println("PATH: " + fbdo.dataPath());
      Serial.println("TYPE: " + fbdo.dataType());
    }
    else {
      Serial.println("FAILED");
      Serial.println("REASON: " + fbdo.errorReason());
    }   }   }   } } }

Actual Figure

Video