Arduino Based LPG Leakage Detector

1//Program to
2
3#include <Servo.h>
4
5
6#include <LiquidCrystal.h>
7
8
9LiquidCrystal  lcd(2, 3, 4, 5, 6, 7);
10
11
12int led = 12;
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14
15int Gassensor = A1;
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17
18Servo  myservo;
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20
21
22int pos = 0;
23
24void setup() 
25
26
27{
28
29
30   pinMode(led,OUTPUT);
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32
33   Serial.begin(9600);
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35
36   myservo.attach(10);
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38
39   lcd.begin(16, 2);
40
41
42  lcd.print("LPG Gas Leakage    ");
43
44
45  lcd.setCursor(0, 1);
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47
48}
49
50void loop()
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52
53{
54
55
56  int sensorValue = analogRead(Gassensor);
57
58
59  Serial.println(sensorValue);
60
61
62  delay(15);      
63
64
65  if(sensorValue > 380)
66
67
68  {
69
70
71      lcd.setCursor(0, 2);
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73
74     lcd.print("Detected       ");
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76
77     digitalWrite(led,HIGH);
78
79
80    myservo.write(20);            
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82  
83
84   }
85
86
87  else if (sensorValue < 380)
88
89
90  {
91
92
93     lcd.setCursor(0, 2);
94
95
96     lcd.print("Not Detected      ");
97
98
99     digitalWrite(led,LOW);
100
101
102    myservo.write(160);
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104            
105
106    }
107
108
109}