Fire Detection using Raspberry Pi

 Here in we are going to see how simple it is to come up with your own Fire detecting device using flame sensor and Raspberry pi . We  can use a buzzer or turn on water sprinklers or even  send an automatic email to fire department.  I'm going to use an LED which blinks on fire detection.

Requirements :

1.        Raspberry Pi
2.        Flame detector
3.        LED 
4.        330 Ohm resistor

Flame Sensor Interface:

•  VCC :-  3.3V-5V voltage
•  GND :- GND
•  DO :- board digital output interface (0 and 1)
•  AO :- board analog output interface

Circuit/ Connection Images:

Connection Steps:

1) Connect Ground on sensor to ground on Raspberry Pi.
2) Supply + 3.3V to power( + symbol on sensor).
3)  Connect Digital out pin of sensor to GPIO input using a resistor (256 O).
4) Connect GPIO out to LED .

Demo:




Code :

I'm using GPIO 18 as output which is connected to LED and GPIO pin 25 as Input from Flame Sensor


from time import sleep
import RPi.GPIO as GPIO

#GPIO.setmode(GPIO.BOARD)
GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)

LedOut = 18
Flamein = 25

#Switch Pin
GPIO.setup(Flamein, GPIO.IN)

#Switch Led
GPIO.setup(LedOut, GPIO.OUT)
count = 0

while True:
    try:
        if (GPIO.input(25) == True):
            print 'fire in your house'
            GPIO.output(LedOut, 1)
            sleep(0.1)
            GPIO.output(LedOut, 0)
            sleep(0.1)
            GPIO.output(LedOut, 1)
         
        else:
            print 'you are safe'
            GPIO.output(LedOut, 0)
         
    except KeyboardInterrupt:
        exit()
GPIO.cleanup()