Prototype Smoke detector ESP32 connection Firebase

MQ-2 is a gas and smoke sensor that is often used in various electronics and IoT projects.

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Prototype Smoke detector ESP32 connection Firebase

Things used in this project

Hardware components

Arduino UNO

Espressif ESP32

Seeed Studio Grove - Gas Sensor(MQ2)

USB-A to Micro-USB Cable

Male/Male Jumper Wires

SparkFun Snappable Protoboard

Software apps and online services

Arduino IDE

Google Firebase

Story

A smoke detector is a device designed to detect the presence of smoke in an environment. Smoke is often a sign of potential danger, especially inside buildings, because it can signal a fire or the release of hazardous substances. Smoke detectors function to provide early warning to residents or users of an area so that they can immediately take preventative or evacuation action. Smoke detectors can be used in a variety of environments, including homes, offices, factories and commercial areas.

It is important to always ensure that smoke detectors are set up and tested regularly to keep them functioning properly. MQ-2 is a gas and smoke sensor that is often used in various electronics and IoT projects. This sensor can detect various gases and fumes, such as methane, propane, carbon monoxide, smoke, and so on. Integrating ESP32 with Firebase allows you to store and retrieve data from the cloud, which is especially beneficial for IoT projects. Firebase provides real-time database and user authentication services that can be used in conjunction with ESP32 devices.

How to make tools:

1. Prepare the tools and materials that will be used according to the list above

2. Assemble the components that will be used according to the provisions provided

3.Create a Firebase Project: Open the Firebase Console, create a new project or select an existing project. Enable Realtime Database and note down the URL of your Firebase database. Example:

4.Firebase configuration on Arduino IDE:

Open Arduino IDE. Download and install the Firebase library. You can do this via the Arduino Library Manager. Copy the Firebase API key and Firebase database URL from your Firebase console, and save the API key and URL as constants. Example:

5. Copy the available coding and run the coding using the Arduino IDE application.

6. Test Run: Upload the program to the ESP32 and monitor the Serial Monitor output. Make sure the ESP32 is connected to WiFi and can send data to Firebase.

7. Firebase Console: Open the Firebase Console and check whether the data appears in your Firebase database.

Photo results:

Code

ESP32 connection Firebase dengan sensor asap

#include <FirebaseESP32.h>
#include <WiFi.h>

#define FIREBASE_HOST "htt.............................com/" // Salin kunci URL database Firebase Anda
#define FIREBASE_AUTH "p................................A"   // Salin kunci API Firebase Anda.

#define WIFI_SSID "Alv....a" // Wifi ssid Anda
#define WIFI_PASSWORD "alvn.......g" // Wifi Password Anda

FirebaseData fbdo; //fbdo adalah variabel. 

#define PinDigital 25 // mendefinisikan pin yang digunakan adalah pin Digital
int NilaiDigital;

void setup() {
  Serial.begin(9600);
  pinMode(PinDigital, INPUT); //mode pada pin D25 dijadikan sebagai input
  
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Menghubungkan Wi-Fi");
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(300);
  }
  Serial.println();
  Serial.print("terhubung dengan WiFi IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}

void loop() {
  NilaiDigital = digitalRead(PinDigital); // membaca nilai digital

  Serial.print("Nilai Output Digital = ");
  Serial.println(NilaiDigital);
  //Aktif LOW = Jika Ada Asap Maka Nilai nya 0 jika tidak ada Asap maka nilai Nya 1

  //Proses Kirim Data
  Firebase.setFloat(fbdo, "/Nilai_Asap", NilaiDigital);
  
  if(NilaiDigital==0){
    Firebase.setString(fbdo, "/Kondisi", "Ada Asap");
  } else {
    Firebase.setString(fbdo, "/Kondisi", "Aman");
  }
  
  delay(1000);
}