Connecting The Flame Sensor With Android App Using Arduino Mega 2560

Introduction

• In this article, I will explain about connecting the Flame Sensor with Android app.
• When the flame is detected, it will send the message to the app.

Parts Of Lists

• Arduino Mega 2560
• Flame Sensor
• Android App
• Bluetooth
• Hook Up Wires
• Bread Board

Flame Sensor

Figure 1 - Flame Sensor

• It is used to detect and respond to the presence of flame (or) fire.
• The detected flame depends on the installation.
• We will also include sounding an alarm.

Connection

Step 1

Connection from the Sensor to the Board.

Sensor	Board
Vcc	5v
Gnd	Gnd
A0	A1

Step 2

Connection from the Bluetooth to the Board.

Bluetooth	Board
Vcc	5v
Gnd	Gnd
TX	Rx
RX	Tx

Programming

const int AOUTpin = A0; //the AOUT
const int ledPin = 13; //the anode of the LED connects to digital pin D13 of the arduino
int limit;
int value;
void setup()
{
    Serial.begin(9600);
    //sets the baud rate pinMode(DOUTpin, INPUT);
    //sets the pin as an input to the arduino pinMode(ledPin, OUTPUT);
    //sets the pin as an output of the arduino
}
void loop()
{
    value = analogRead(AOUTpin); //
    limit = digitalRead(DOUTpin); //
    Serial.print("Fire value: ");
    Serial.println(value); //prints the CO value
    Serial.print("Level: ");
    Serial.print(limit); //prints the limit reached as either LOW or HIGH (above or underneath)
    delay(100);
    if (limit == HIGH)
    {
        Serial.println("fire dected");
    }
    else
    {
        Serial.println("Fire not dected");
    }
}

Explanation

• We have to connect the Android app in the mobile from the Playstore
• When the fire is detected, it can be used to send the message to the app
• When the fire is detected, it will send the message: "Fire Detected."