Uploading data to firebase using NodeMCU

[rafitc99]

May be "FIREBASE_HOST" have some error, try in this model "<YourProjectName>.firebaseio.com"
Look this project : ( https://github.com/jagannathBhat/barish/tree/master/nodeWithFirebase)

[salmanfaris]

Hi @Anudeep , Can you please share the error log details?

If you are facing this error with the JSONBUFFER_SIZE like this

lib\firebase-arduino-master\src\FirebaseObject.h:109:21: error: 'StaticJsonBuffer' was not declared in this scope
std::shared_ptr<StaticJsonBuffer<FIREBASE_JSONBUFFER_SIZE>> buffer_;

this is might be using the latetst ArduinoJson lib , so downgrade Arduinojson to the version 5.13.2. It will fix the issue

Sketch -> Include libraries -> Manage libraries

if the error persist please share the full error log so that we can understand it better .

[Anudeep]

Thanks, @salmanfaris, I have solved this error previously. But for me there is no error, code is getting uploaded smoothly but the data is not getting uploaded to the firebase!
Do I have to change any settings in the firebase page? for uploading the data!!

After uploading the code... I have the below log!!

esptool.py v2.6
2.6
esptool.py v2.6
Serial port COM4
Connecting....
Chip is ESP8266EX
Features: WiFi
MAC: 84:f3:eb:58:b5:b7
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 366560 bytes to 260548...

Writing at 0x00000000... (6 %)
Writing at 0x00004000... (12 %)
Writing at 0x00008000... (18 %)
Writing at 0x0000c000... (25 %)
Writing at 0x00010000... (31 %)
Writing at 0x00014000... (37 %)
Writing at 0x00018000... (43 %)
Writing at 0x0001c000... (50 %)
Writing at 0x00020000... (56 %)
Writing at 0x00024000... (62 %)
Writing at 0x00028000... (68 %)
Writing at 0x0002c000... (75 %)
Writing at 0x00030000... (81 %)
Writing at 0x00034000... (87 %)
Writing at 0x00038000... (93 %)
Writing at 0x0003c000... (100 %)
Wrote 366560 bytes (260548 compressed) at 0x00000000 in 23.3 seconds (effective 126.0 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

[Anudeep]

Thanks, @rafitc99. But even this didn't solve my problem!!
I have changed the code in the below format...

#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>       

// Set these to run example.
#define FIREBASE_HOST "syndinnovate-1.firebaseio.com"
#define FIREBASE_AUTH "AIzaS********************7hKQe4uPbfUKHc"
#define WIFI_SSID "SSID"
#define WIFI_PASSWORD "PASS"

void setup() {
  Serial.begin(9600);
  delay(1000);                
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);                                     //try to connect with wifi
  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("Connected to ");
  Serial.println(WIFI_SSID);
  Serial.print("IP Address is : ");
  Serial.println(WiFi.localIP());                                            //print local IP address
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);                              // connect to firebase                                                               //Start reading dht sensor
}

void loop() {                                                             //Convert RainSensr data into string
  
  Firebase.pushString("/NEW", "No");   
  delay(1000);//setup path and send readings
  Firebase.pushString("/NEW", "Yes");                                //setup path and send readings
  delay(1000);//setup path and send readings
}

[salmanfaris]

@Anudeep Ok , compilation part is clear .did you getting anything on the firebase side ? Any erros ?

[Anudeep]

@salmanfaris Nothing, No errors!!
Do I need to change anything in Firebase settings or something?

[Anudeep]

@salmanfaris Thanks for the support!!
I finally resolved the error. I have taken FIREBASE_AUTH as apiKey instead of Database secrets.

[salmanfaris]

@Anudeep Great . Glad to know that it is solved , Keep hacking

[Palani]

@Anudeep Hello Anudeep could you please help me out by elaborating the fix to get rid of that error?
Thanks in advance.

[Anudeep]

Hello @Palani, In the Firebase, there are two types of storage,

1. Cloud Firestore (Very recent one & NoSQL database)
2. Realtime Database (To which we upload the data using NodeMCU)

In the Arduino Code, you can see that there is a variable named FIREBASE_AUTH.

This variable should be assigned to the Database secret. This you can find in Project Settings -> Service accounts -> Database Secrets.

My mistake is, i have mistakenly assigned thay to Web API key. This is found at Project Settings -> General.

The error can also occur when u don't initialise a proper realtime database in Firebase. (This is not my case).