Published September 7, 2021

Blynk Fire Alarm

This is a fire alarm system that we make using nodemcu and flame sensor.

BeginnerFull instructions provided2 hours1,479

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

DFRobot Gravity: Analog Flame Sensor For Arduino

Jumper wires (generic)

Breadboard (generic)

USB-A to Micro-USB Cable

Arduino UNO

Software apps and online services

Arduino IDE

Story

Hey Techies, Today we are going to make a very useful and trending project which is needed to be installed in every house. It is a Blynk Fire Alarm system. This is a fire alarm that rings whenever it detects fire. For detecting the flames we are using a flame sensor. Make the circuit according to the diagram which is given below then upload the given code to the nodemcu. For more information regarding this project visit the original post of this project also bookmark TECHATRONIC.COM as all my further projects and tutorials will be pre-uploaded there. Anyways, let's began.

Working of the Project:

The flame sensor that we use is responsible for detecting the fire. When the sensor successfully detects the fire then it sends HIGH signals to the nodemcu. After it, you will receive an alert on your smartphone that fire is detected. This project is very simple in working and also very interesting in making. This system is very cheap in price and if we install it in our homes and other places then we can prevent the accidents happens due to the fire. You will need the following materials for making this project.

Material Required:

NodeMCU (ESP8266 MOD)
Flame sensor
Jumper wires
Breadboard
Phone with Wi-Fi connection

Circuit Design:

This is the circuit diagram for this project.

Code for the Project:

NOTE: Copy this code and then paste it to the IDE software.

//TECHATRONIC.COM
// BLYNK LIBRARY
// https://github.com/blynkkk/blynk-library
// ESP8266 LIBRARY
// https://github.com/ekstrand/ESP8266wifi
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
BlynkTimer timer;
char auth[] = "your-auth-code"; //Auth code sent via Email
char ssid[] = "your-wifi-ssid"; //Wifi name
char pass[] = "your-wifi-password"; //Wifi Password
int flag=0;
void notifyOnFire()
{
int isButtonPressed = digitalRead(D1);
if (isButtonPressed==1 && flag==0) {
Serial.println("Fire DETECTED");
Blynk.notify("Alert : Fire detected");
flag=1;
}
else if (isButtonPressed==0)
{
flag=0;
}
}
void setup()
{
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
pinMode(D1,INPUT_PULLUP);
timer.setInterval(1000L,notifyOnFire);
}
void loop()
{
Blynk.run();
timer.run();
}

We hope that you liked this project. Thanks for reading.

HAPPY LEARNING!

 //TECHATRONIC.COM  
 // BLYNK LIBRARY  
 // https://github.com/blynkkk/blynk-library  
 // ESP8266 LIBRARY  
 // https://github.com/ekstrand/ESP8266wifi  
 #define BLYNK_PRINT Serial  
 #include <ESP8266WiFi.h>  
 #include <BlynkSimpleEsp8266.h>  
 BlynkTimer timer;  
 char auth[] = "your-auth-code"; //Auth code sent via Email  
 char ssid[] = "your-wifi-ssid"; //Wifi name  
 char pass[] = "your-wifi-password"; //Wifi Password  
 int flag=0;  
 void notifyOnFire()  
 {  
  int isButtonPressed = digitalRead(D1);  
  if (isButtonPressed==1 && flag==0) {  
   Serial.println("Fire DETECTED");  
   Blynk.notify("Alert : Fire detected");  
   flag=1;  
  }  
  else if (isButtonPressed==0)  
  {  
   flag=0;  
  }  
 }  
 void setup()  
 {  
 Serial.begin(9600);  
 Blynk.begin(auth, ssid, pass);  
 pinMode(D1,INPUT_PULLUP);  
 timer.setInterval(1000L,notifyOnFire);   
 }  
 void loop()  
 {  
  Blynk.run();  
  timer.run();  
 }

 //TECHATRONIC.COM  
 // BLYNK LIBRARY  
 // https://github.com/blynkkk/blynk-library  
 // ESP8266 LIBRARY  
 // https://github.com/ekstrand/ESP8266wifi  
 #define BLYNK_PRINT Serial  
 #include <ESP8266WiFi.h>  
 #include <BlynkSimpleEsp8266.h>  
 BlynkTimer timer;  
 char auth[] = "your-auth-code"; //Auth code sent via Email  
 char ssid[] = "your-wifi-ssid"; //Wifi name  
 char pass[] = "your-wifi-password"; //Wifi Password  
 int flag=0;  
 void notifyOnFire()  
 {  
  int isButtonPressed = digitalRead(D1);  
  if (isButtonPressed==1 && flag==0) {  
   Serial.println("Fire DETECTED");  
   Blynk.notify("Alert : Fire detected");  
   flag=1;  
  }  
  else if (isButtonPressed==0)  
  {  
   flag=0;  
  }  
 }  
 void setup()  
 {  
 Serial.begin(9600);  
 Blynk.begin(auth, ssid, pass);  
 pinMode(D1,INPUT_PULLUP);  
 timer.setInterval(1000L,notifyOnFire);   
 }  
 void loop()  
 {  
  Blynk.run();  
  timer.run();  
 }

Credits

Techatronic

72 projects • 127 followers

Electronic engineer

Blynk Fire Alarm

Things used in this project

Hardware components

Software apps and online services

Story

Working of the Project:

Material Required:

Circuit Design:

Code for the Project:

Code

Code snippet #1

Code snippet #2

Code snippet #3

Code snippet #4

Code snippet #5

Code snippet #6

Credits

Techatronic

Comments

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Blynk Fire Alarm

Blynk Fire Alarm

Things used in this project

Hardware components

Software apps and online services

Story

Working of the Project:

Material Required:

Circuit Design:

Code for the Project:

Code

Code snippet #1

Code snippet #2

Code snippet #3

Code snippet #4

Code snippet #5

Code snippet #6

Credits

Techatronic

Comments

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