Hazardous Gas leak detection

1#include <LiquidCrystal.h>
2LiquidCrystal lcd(8, 9, 10, 11, 12, 13);
3
4int   Gas_Sensor_Value = 0;
5int Gas_sensor = A0;
6int Piezo = 3;
7int electric_motor_1   = 4 ;
8int electric_motor_2 = 5 ;
9int electric_motor_3 = 6 ;
10int electric_motor_4   = 7 ;
11
12
13 
14
15void setup() 
16{
17  lcd.begin(16, 2); // set up the   LCD's number of columns and rows:
18  pinMode(Gas_sensor, INPUT);
19  pinMode(Piezo,   OUTPUT);
20  pinMode(electric_motor_1, OUTPUT);
21  pinMode(electric_motor_2,   OUTPUT);
22  pinMode(electric_motor_3, OUTPUT);
23  pinMode(electric_motor_4,   OUTPUT);
24}
25void loop() 
26{
27   lcd.clear();
28   Gas_Sensor_Value = analogRead(A0);
29
30    if( Gas_Sensor_Value >= 700)
31   {
32    digitalWrite(Piezo, HIGH);
33    digitalWrite(electric_motor_1,   HIGH);
34    digitalWrite(electric_motor_2, HIGH);
35    digitalWrite(electric_motor_3,   HIGH);
36    digitalWrite(electric_motor_4, HIGH);
37    lcd.print("Caution:Gas   leak"); // Print a message to the LCD.
38     
39   delay(1000);
40   }
41   else
42  {
43   digitalWrite(Piezo, LOW);
44   digitalWrite(electric_motor_1,   LOW);
45   digitalWrite(electric_motor_2, LOW);
46   digitalWrite(electric_motor_3,   LOW);
47   digitalWrite(electric_motor_4, LOW);
48   lcd.print("The environment");   // Print a message to the LCD.
49   lcd.setCursor(0,1); 
50   lcd.print("is Safe");   
51    delay(1000);
52  }
53  }
54

1#include <LiquidCrystal.h>
2LiquidCrystal lcd(8, 9, 10, 11, 12, 13);
3
4int
5  Gas_Sensor_Value = 0;
6int Gas_sensor = A0;
7int Piezo = 3;
8int electric_motor_1
9  = 4 ;
10int electric_motor_2 = 5 ;
11int electric_motor_3 = 6 ;
12int electric_motor_4
13  = 7 ;
14
15
16 
17
18void setup() 
19{
20  lcd.begin(16, 2); // set up the
21  LCD's number of columns and rows:
22  pinMode(Gas_sensor, INPUT);
23  pinMode(Piezo,
24  OUTPUT);
25  pinMode(electric_motor_1, OUTPUT);
26  pinMode(electric_motor_2,
27  OUTPUT);
28  pinMode(electric_motor_3, OUTPUT);
29  pinMode(electric_motor_4,
30  OUTPUT);
31}
32void loop() 
33{
34   lcd.clear();
35   Gas_Sensor_Value = analogRead(A0);
36
37
38   if( Gas_Sensor_Value >= 700)
39   {
40    digitalWrite(Piezo, HIGH);
41    digitalWrite(electric_motor_1,
42  HIGH);
43    digitalWrite(electric_motor_2, HIGH);
44    digitalWrite(electric_motor_3,
45  HIGH);
46    digitalWrite(electric_motor_4, HIGH);
47    lcd.print("Caution:Gas
48  leak"); // Print a message to the LCD.
49     
50   delay(1000);
51   }
52
53  else
54  {
55   digitalWrite(Piezo, LOW);
56   digitalWrite(electric_motor_1,
57  LOW);
58   digitalWrite(electric_motor_2, LOW);
59   digitalWrite(electric_motor_3,
60  LOW);
61   digitalWrite(electric_motor_4, LOW);
62   lcd.print("The environment");
63  // Print a message to the LCD.
64   lcd.setCursor(0,1); 
65   lcd.print("is Safe");
66  
67    delay(1000);
68  }
69  }
70