Sensor-Controlled Guard Lights

1int Light = 5;            // pin for LED
2int PIRpower = 13;        //  power to PIR sensor
3int PIR = 12;             // input from PIR sensor
4int  PIRState = LOW;       // status of PIR
5int LDR = 2;              // input from  LDR
6int LDRpower = 3;         // power to LDR sensor
7int LDRState = LOW;       //  status of LDR
8
9void Night()
10{
11  digitalWrite(PIRpower, HIGH);   // power  ON PIR sensor
12  delay(2000);
13  Serial.println("A. PIR sensor ON, detecting  motion");
14  delay(3000);                    // wait
15  PIRState = digitalRead(PIR);    // read PIR sensor
16  delay(500);
17  Serial.println("B. Motion sensor read,  switching PIR OFF");
18  digitalWrite(PIRpower, LOW);
19  delay(500);
20  if  (PIRState == HIGH){
21    Serial.println(">>>>>>>>>> MOTION DETECTED");
22    delay(500);
23    Serial.println("I. switching Light ON");
24    delay(500);
25    digitalWrite(Light,  HIGH);
26    Serial.println("II. Light 100%");
27    delay(15000);                                  //wait  15sec
28    analogWrite(Light, 175);
29    Serial.println("II. Light 70%");
30    delay(15000);                                  //wait 15sec
31    analogWrite(Light,  100);
32    Serial.println("II. Light 40%");
33    delay(15000);                                  //wait  15sec
34    analogWrite(Light, 50);
35    Serial.println("II. Light 20%");
36    delay(500);                                 
37    Serial.println("..........  Wait 5 seconds..........");
38    delay(1000);                                  
39    }else {
40      Serial.println(">>>>>>>>>> MOTION NOT DETECTED"); // We only  want to print on the output change, not state
41      delay(500);
42      Serial.println("..........  Wait 10 seconds..........");
43      delay(10000);                                  //wait  10sec
44      }
45}
46
47void setup() {
48  pinMode(Light, OUTPUT);         //  declare LED as output
49  pinMode(PIRpower, OUTPUT);      // declare PIRpower as  output
50  pinMode(LDRpower, OUTPUT);      // declare LDRpower as output
51  pinMode(LDR,  INPUT);            // declare LDR sensor as input
52  pinMode(PIR, INPUT);            //  declare PIR sensor as input
53  digitalWrite(PIRpower, LOW);
54  digitalWrite(LDRpower,  LOW);
55  Serial.begin(9600);
56}
57 
58void loop(){
59  Serial.println("..........  START..........");              
60  digitalWrite(LDRpower, HIGH);
61  Serial.println("1.  LDRpower ON, reading LDR sensor");
62  delay(3000);
63  LDRState = digitalRead(LDR);
64  delay(500);
65  Serial.println("2. LDR status read, turning LDRpower OFF");
66  delay(500);
67  Serial.println("3. LDRpower OFF");
68  digitalWrite(LDRpower,  LOW);
69  delay(500);
70  if (LDRState == HIGH){                // read status  of LDR (Day or Night)
71    Serial.println(">>>>>>>>>> DARKNESS DETECTED");
72    delay(500);
73    Serial.println("Switch ON Light 20%");
74    analogWrite(Light,  50);
75    Night();
76    Serial.println(".......... Restarting..........");
77    } else{
78    Serial.println(">>>>>>>>>> BRIGHTNESS DETECTED");
79    delay(500);
80    digitalWrite(Light, LOW);
81    Serial.println(".......... Waiting 5mins..........");
82    delay(60000);                                             //wait 1 minute
83    Serial.println(".......... Waiting 4mins..........");
84    delay(60000);                                             //wait 1 minute
85    Serial.println("..........  Waiting 3mins..........");
86    delay(60000);                                             //wait  1 minute
87    Serial.println(".......... Waiting 2mins..........");
88    delay(60000);                                             //wait 1 minute
89    Serial.println("..........  Waiting 1mins..........");
90    delay(60000);                                             //wait  1 minute
91    Serial.println(".......... Restarting..........");
92    }
93}
94