Arduino Laser Security Alarm || Laser Security with LDR

Arduino Laser Security Alarm || Laser Security with LDR|| Arduino Burglar Alarm

Dec 5, 2019

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23411 views

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2 respects

Components and supplies

Jumper wires (generic)

Buzzer, Piezo

Arduino UNO

Laser Module

LDR, 5 Mohm

Breadboard (generic)

Apps and platforms

Arduino IDE

Project description

Code

Arduino code

arduino

1const int ledPin = 13;
2
3const int buzzerPin = 12;
4
5const int   ldrPin = A0;
6const int laserPin = 7;
7
8void setup () {
9
10Serial.begin(9600);
11
12pinMode(ledPin,   OUTPUT);
13
14pinMode(buzzerPin, OUTPUT);
15
16pinMode(ldrPin, INPUT);
17pinMode(   laserPin , OUTPUT);
18
19digitalWrite( laserPin , HIGH);
20
21}
22
23void   loop() {
24
25int ldrStatus = analogRead(ldrPin);
26
27if (ldrStatus > 1) {
28
29tone(buzzerPin,   100);
30
31digitalWrite(ledPin, HIGH);
32
33delay(100);
34
35noTone(buzzerPin);
36
37digitalWrite(ledPin,   LOW);
38
39delay(100);
40
41Serial.println(" ALARM ACTIVATED ");
42
43}
44
45else   {
46
47noTone(buzzerPin);
48
49digitalWrite(ledPin, LOW);
50
51Serial.println("ALARM   DEACTIVATED");
52
53}
54Serial.println( ldrStatus );
55//delay(10);
56}

const int ledPin = 13;

const int buzzerPin = 12;

const int   ldrPin = A0;
const int laserPin = 7;

void setup () {

Serial.begin(9600);

pinMode(ledPin,   OUTPUT);

pinMode(buzzerPin, OUTPUT);

pinMode(ldrPin, INPUT);
pinMode(   laserPin , OUTPUT);

digitalWrite( laserPin , HIGH);

}

void   loop() {

int ldrStatus = analogRead(ldrPin);

if (ldrStatus > 1) {

tone(buzzerPin,   100);

digitalWrite(ledPin, HIGH);

delay(100);

noTone(buzzerPin);

digitalWrite(ledPin,   LOW);

delay(100);

Serial.println(" ALARM ACTIVATED ");

}

else   {

noTone(buzzerPin);

digitalWrite(ledPin, LOW);

Serial.println("ALARM   DEACTIVATED");

}
Serial.println( ldrStatus );
//delay(10);
}

Arduino code

arduino

1const int ledPin = 13;
2
3const int buzzerPin = 12;
4
5const int  ldrPin = A0;
6const int laserPin = 7;
7
8void setup () {
9
10Serial.begin(9600);
11
12pinMode(ledPin,  OUTPUT);
13
14pinMode(buzzerPin, OUTPUT);
15
16pinMode(ldrPin, INPUT);
17pinMode(  laserPin , OUTPUT);
18
19digitalWrite( laserPin , HIGH);
20
21}
22
23void  loop() {
24
25int ldrStatus = analogRead(ldrPin);
26
27if (ldrStatus > 1) {
28
29tone(buzzerPin,  100);
30
31digitalWrite(ledPin, HIGH);
32
33delay(100);
34
35noTone(buzzerPin);
36
37digitalWrite(ledPin,  LOW);
38
39delay(100);
40
41Serial.println(" ALARM ACTIVATED ");
42
43}
44
45else  {
46
47noTone(buzzerPin);
48
49digitalWrite(ledPin, LOW);
50
51Serial.println("ALARM  DEACTIVATED");
52
53}
54Serial.println( ldrStatus );
55//delay(10);
56}

const int ledPin = 13;

const int buzzerPin = 12;

const int  ldrPin = A0;
const int laserPin = 7;

void setup () {

Serial.begin(9600);

pinMode(ledPin,  OUTPUT);

pinMode(buzzerPin, OUTPUT);

pinMode(ldrPin, INPUT);
pinMode(  laserPin , OUTPUT);

digitalWrite( laserPin , HIGH);

}

void  loop() {

int ldrStatus = analogRead(ldrPin);

if (ldrStatus > 1) {

tone(buzzerPin,  100);

digitalWrite(ledPin, HIGH);

delay(100);

noTone(buzzerPin);

digitalWrite(ledPin,  LOW);

delay(100);

Serial.println(" ALARM ACTIVATED ");

}

else  {

noTone(buzzerPin);

digitalWrite(ledPin, LOW);

Serial.println("ALARM  DEACTIVATED");

}
Serial.println( ldrStatus );
//delay(10);
}

Downloadable files

Arduino connections

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