My app doesnt read values from firebase. ESP 12E (8266) with dht11 and induction sensor

[Divi77e]

Hello,
As i mentioned in topic, my app doesnt read values from firebase.
My ESP Code is

#include <ESP8266WiFi.h>                 
#include <FirebaseArduino.h>
#include <DHT.h>              
 
#define frb_link "axxxxxxxxxxxxxxxeio.com"      
#define frb_haslo "8JGxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxOJGq3"            
#define wifi_ssid "SM-xxxxxx"                                  
#define wifi_haslo "mnxxxxxx"            
 
#define DHTPIN D2                                            // Cyfrowy pin podlaczony do sensoru
#define DHTTYPE DHT11                                        // definiowanie sensoru temperatury
#define Indupin D3								// 
DHT dht(DHTPIN, DHTTYPE);    

String msg1 = " Wykryto metal";
String msg2 = " Nie wykrywa";

void setup() 
{
  pinMode(Indupin, INPUT);							// definiuje typ pinu 2
  Serial.begin(9600);
  dht.begin();                                                  //odczytuje dane z sensora
            
  WiFi.begin(wifi_ssid, wifi_haslo);                                  // Logowanie do wifi
  Serial.print(wifi_ssid);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
 
  Serial.println();
  Serial.print("Polaczono z siecia");
  Serial.print("Adres IP: ");
  Serial.println(WiFi.localIP());                               //wyświetla lokalne ip
  Firebase.begin(frb_link, frb_haslo);                 // łączenie do bazy danych
}
 
void loop() 
{
float t = dht.readTemperature();                              // Odczyt temperatury w celsjuszach 
  
  int sensorValue = digitalRead(Indupin);
	if(sensorValue==LOW)
		{
		Serial.println(msg1);					// komunikat w konsoli
		Firebase.setString("Indukcja", msg1);		// Zmiana wpisu w bazie danych
		delay(500);
		}
	else
		{
		Serial.println(msg2);					// komunikat w konsoli
		Firebase.setString("Indukcja", msg2);	// Zmiana wpisu w bazie danych
    }
  Serial.print("%  Temperatura: ");  
  Serial.print(t);  
  Serial.println("°C ");
  
  Firebase.setFloat ("Temperatura",t);				// wypchniecie do bazy danych wartosci temperatury
  delay(2500);
    
}

My app inventor code looks like this

My app looks like this:

Im sure my project bucket and link to database is correct too.
On firebase im lacking temperature readings bcs i didnt connect it yet, induction works:

Please help

[ABG]

I vaguely remember a problem with getting Data Changed events from Firebase when an IOT device does the update.

Unfortunately, I failed to record it in my Firebase FAQ.

To work around this, you could pull in a Clock Timer and poll the Firebase tag/value every few seconds.

(If any one has a link to this problem's history, please post it here.)

[Divi77e]

@Divi77e

Im pretty fresh to app inventor, can you elaborate on how to do that with clock?

Im pretty fresh to app inventor, can you elaborate on how to do that with clock?

[ABG]

@Divi77e

can you elaborate on how to do that with clock?

Did you pull in a Clock component from the Sensors Drawer in the Designer yet?

[Divi77e]

yes but i dont quite understand what to do with it or how

[Divi77e]

Smth like that? ( i want to use button to manually refresh values aswell sometimes)

[ABG]

@Divi77e

yes but i dont quite understand what to do with it or how

Did you pull in a Clock1 Timer event block in the Blocks Editor?

[Divi77e]

Yes but what do i need to put in it? To make it work like a refresher/puller of data from firebase>?

[ABG]

@Divi77e

Yes but what do i need to put in it?

You put in it the same Get blocks you had in that button Click event you showed us.

There is a tool tip that pops up when you hover your cursor over each block.
It helps to read those.

[Divi77e]

Is this it? Should be working now?

[ABG]

Yes, that's it.

If the Timer is enabled, it should be shooting off requests to Firebase every second, following the Clock1 attributes.

[Divi77e]

and

But it still doesnt work when i download it on android
It's still the same screen im getting in the beggining with both labels having "text for the label"

[Divi77e]

And i have like this in firebase

[Divi77e]

Am I doing something wrong with this app? Cuz im really hopeless ngl.
No matter what i do the changes wont show in my android phone at all ;/

[ABG]

You are supposed to read all the blocks in the FireBase Blocks Pallette to see what they do.

Especially the golden event blocks.

That should give you a hint of what you need.

[Divi77e]

okay nvm, my esp 12 e wrote things in wrong directory. They just weren't in bucket but were buckets themselves. After correctly arranging them i succeded in properly getting read from firebase!
Thanks for patience! <3

[ABG]

@Divi77e

my esp 12 e wrote things in wrong directory. They just weren't in bucket but were buckets themselves. After correctly arranging them i succeded in properly getting read from firebase!

Could you post your new code from both sides, for the next person who needs this?

[Juan_Antonio]

Here a tutorial

ESP8266. FirebaseDB. Send. Receive. IDE Arduino

In this tutorial we saw how we could communicate ESP32, Firebase realtime and an application... https://community.appinventor.mit.edu/t/esp32-firebasedb-send-receive-ide-arduino/10747 [firebasedb24b] We are going to adapt those codes to ESP8266. We can send data from the App to Firebase and display it in the Serial Monitor. The ESP8266 code generates two random numbers every 5 seconds, sends them to Firebase and is automatically received by the app. We will use this library... [firebase…

[Divi77e]

Here, the wiever with firebase

The block code:

The ESP 8266 code:

#include <ESP8266WiFi.h>                 
#include <FirebaseArduino.h>
#include <DHT.h>              
 
#define frb_link "axxxxxxxxxxxxxxxeio.com"      
#define frb_haslo "8JGxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxOJGq3"            
#define wifi_ssid "SM-xxxxxx"                                  
#define wifi_haslo "mnxxxxxx"            
 
#define DHTPIN D2                                            // Cyfrowy pin podlaczony do sensoru
#define DHTTYPE DHT11                                        // definiowanie sensoru temperatury
#define Indupin D3								// 
DHT dht(DHTPIN, DHTTYPE);    

String msg1 = " Wykryto metal";
String msg2 = " Nie wykrywa";

void setup() 
{
  pinMode(Indupin, INPUT);							// definiuje typ pinu 2
  Serial.begin(9600);
  dht.begin();                                                  //odczytuje dane z sensora
            
  WiFi.begin(wifi_ssid, wifi_haslo);                                  // Logowanie do wifi
  Serial.print(wifi_ssid);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
 
  Serial.println();
  Serial.print("Polaczono z siecia");
  Serial.print("Adres IP: ");
  Serial.println(WiFi.localIP());                               //wyświetla lokalne ip
  Firebase.begin(frb_link, frb_haslo);                 // łączenie do bazy danych
}
 
void loop() 
{
float t = dht.readTemperature();                              // Odczyt temperatury w celsjuszach 
  
  int sensorValue = digitalRead(Indupin);
	if(sensorValue==LOW)
		{
		Serial.println(msg1);					// komunikat w konsoli
		Firebase.setString("Indukcja", msg1);		// Zmiana wpisu w bazie danych
		delay(500);
		}
	else
		{
		Serial.println(msg2);					// komunikat w konsoli
		Firebase.setString("project-787465550920/Indukcja", msg2);	// Zmiana wpisu w bazie danych
    }
  Serial.print("%  Temperatura: ");  
  Serial.print(t);  
  Serial.println("°C ");
  
  Firebase.setFloat ("project-787465550920/Temperatura",t);				// wypchniecie do bazy danych wartosci temperatury
  delay(2500);
    
}

There you go, all the changes ive made so far.

[Juan_Antonio]

@Divi77e

The block code:

If you use Firebase realtime, the Timer is not necessary since the change is detected automatically with the "DataChanged" block. Have you consulted my tutorial?