import RPi.GPIO as gpio 
from time import sleep 

smoke = 22 #physical 15
led = 27 #physical 13
gpio.setmode(gpio.BCM)
gpio.setup(smoke,gpio.IN)
gpio.setup(led,gpio.OUT)
gpio.output(led,False)

print("Smoke sensor warming up")
sleep(20)
try:
    while True:
        if gpio.input(smoke) == 0:  
            print("smoke detetced")
            gpio.output(led,True)
        else:
            print("smoke not detetced")
            gpio.output(led,False)
        sleep(1)
finally:
    gpio.output(led,False)
    sleep(1)
gpio.cleanup()
#VCC to 2,4 5V pins , data to any gpio pin and ground to 6,9,14