Smart Home Monitoring

1#define pirPin 7
2
3long unsigned int lowIn;
4long unsigned int  pause = 5000;
5boolean lockLow = true;
6boolean takeLowTime;
7
8#include  <LiquidCrystal_I2C.h>
9#include <Wire.h> 
10
11LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
12
13
14void  setup() {
15  Serial.begin(9600);
16  pinMode(pirPin, INPUT);
17
18
19  lcd.init();                      // initialize the lcd 
20  lcd.backlight();
21  lcd.begin(16,2);
22  lcd.setCursor(0,0);
23  lcd.print("Welcome To :");
24  lcd.setCursor(0,1);
25  lcd.print("Techwan Canel");
26  delay(3000);
27  
28}
29
30void loop()  {
31         
32
33    PIRSensor();
34  
35   
36}
37
38void PIRSensor()  {
39  
40   if(digitalRead(pirPin) == HIGH) {
41      if(lockLow) {
42         lockLow  = false;
43         Serial.println("Motion detected");
44         lcd.clear();
45         lcd.setCursor(0,0);
46         lcd.print("Check Motion");
47         lcd.setCursor(0,1);
48         lcd.print("Motion Detected");
49         delay(50);
50      }
51      takeLowTime  = true;
52   }
53   if(digitalRead(pirPin) == LOW) {
54      if(takeLowTime){
55         lowIn = millis();
56         takeLowTime = false;
57      }
58      if(!lockLow  && millis() - lowIn > pause) {
59         lockLow = true;
60         Serial.println("Motion  ended");
61         lcd.clear();
62         lcd.setCursor(0,0);
63         lcd.print("Check  Motion");
64         lcd.setCursor(0,1);
65         lcd.print("Motion Ended");
66         delay(50);
67      }
68   }
69}
70