DIY HOMEMADE PIR ALARM SYSTEM with Arduino:

This is a simple alarm system made with help of buzzer, LED and a motion detector. One can stop the buzzer by pressing the button.

May 28, 2020

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4 respects

securitysystem

pirsensor

Components and supplies

LED (generic)

Buzzer

Arduino UNO

Breadboard (generic)

Pushbutton switch 12mm

PIR Sensor, 7 m

Male/Female Jumper Wires

Resistor 220 ohm

Apps and platforms

Arduino IDE

Project description

Code

CODE;

c_cpp

1//this project is made by BEASTIDREES62 https://id.arduino.cc/?code=MTxqeHweG6vL2cur&state=amxEcTB2bnNiYjluTUxmRExWaWZnOXIzUk1BLWRqZTZYUGtJNGtxODB%2Bdg%3D%3D
2//   Declaring Pins
3const int buzzerPin = 5;
4const int ledPin = 6;
5const int   motionPin = 7;
6const int buttonPin = 12;
7
8// Setting Buzzer mode to False
9boolean   buzzer_mode = false;
10
11// For LED
12int ledState = LOW;
13long previousMillis   = 0; 
14long interval = 100;  // Interval at which LED blinks
15
16void setup()
17{
18   //The Following are our output
19  pinMode(ledPin,OUTPUT);
20  pinMode(buzzerPin,OUTPUT);
21
22   //Button is our Input
23  pinMode(buttonPin, INPUT);
24  
25  // Wait before   starting the alarm
26  delay(5000);
27}
28
29void loop()
30{
31  // To chech   whether the motion is detected or not
32  if (digitalRead(motionPin)) {
33    buzzer_mode   = true; 
34  }
35
36  // If alarm mode is on,blink our LED
37  if (buzzer_mode){
38     unsigned long currentMillis = millis();
39    if(currentMillis - previousMillis   > interval) {
40      previousMillis = currentMillis;   
41      if (ledState   == LOW)
42        ledState = HIGH;
43      else
44        ledState = LOW;
45     // Switch the LED
46    digitalWrite(ledPin, ledState);
47    }
48    tone(buzzerPin,1000);
49   }
50
51  // If alarm is off
52  if (buzzer_mode == false) {
53  
54    //   No tone & LED off
55    noTone(buzzerPin);  
56    digitalWrite(ledPin, LOW);
57   }
58
59  // If our button is pressed Switch off ringing and Setup
60  int button_state   = digitalRead(buttonPin);
61  if (button_state) {buzzer_mode = false;}
62}

//this project is made by BEASTIDREES62 https://id.arduino.cc/?code=MTxqeHweG6vL2cur&state=amxEcTB2bnNiYjluTUxmRExWaWZnOXIzUk1BLWRqZTZYUGtJNGtxODB%2Bdg%3D%3D
//   Declaring Pins
const int buzzerPin = 5;
const int ledPin = 6;
const int   motionPin = 7;
const int buttonPin = 12;

// Setting Buzzer mode to False
boolean   buzzer_mode = false;

// For LED
int ledState = LOW;
long previousMillis   = 0; 
long interval = 100;  // Interval at which LED blinks

void setup()
{
   //The Following are our output
  pinMode(ledPin,OUTPUT);
  pinMode(buzzerPin,OUTPUT);

   //Button is our Input
  pinMode(buttonPin, INPUT);
  
  // Wait before   starting the alarm
  delay(5000);
}

void loop()
{
  // To chech   whether the motion is detected or not
  if (digitalRead(motionPin)) {
    buzzer_mode   = true; 
  }

  // If alarm mode is on,blink our LED
  if (buzzer_mode){
     unsigned long currentMillis = millis();
    if(currentMillis - previousMillis   > interval) {
      previousMillis = currentMillis;   
      if (ledState   == LOW)
        ledState = HIGH;
      else
        ledState = LOW;
     // Switch the LED
    digitalWrite(ledPin, ledState);
    }
    tone(buzzerPin,1000);
   }

  // If alarm is off
  if (buzzer_mode == false) {
  
    //   No tone & LED off
    noTone(buzzerPin);  
    digitalWrite(ledPin, LOW);
   }

  // If our button is pressed Switch off ringing and Setup
  int button_state   = digitalRead(buttonPin);
  if (button_state) {buzzer_mode = false;}
}

CODE;

c_cpp

1//this project is made by BEASTIDREES62 https://id.arduino.cc/?code=MTxqeHweG6vL2cur&state=amxEcTB2bnNiYjluTUxmRExWaWZnOXIzUk1BLWRqZTZYUGtJNGtxODB%2Bdg%3D%3D
2//  Declaring Pins
3const int buzzerPin = 5;
4const int ledPin = 6;
5const int  motionPin = 7;
6const int buttonPin = 12;
7
8// Setting Buzzer mode to False
9boolean  buzzer_mode = false;
10
11// For LED
12int ledState = LOW;
13long previousMillis  = 0; 
14long interval = 100;  // Interval at which LED blinks
15
16void setup()
17{
18  //The Following are our output
19  pinMode(ledPin,OUTPUT);
20  pinMode(buzzerPin,OUTPUT);
21
22  //Button is our Input
23  pinMode(buttonPin, INPUT);
24  
25  // Wait before  starting the alarm
26  delay(5000);
27}
28
29void loop()
30{
31  // To chech  whether the motion is detected or not
32  if (digitalRead(motionPin)) {
33    buzzer_mode  = true; 
34  }
35
36  // If alarm mode is on,blink our LED
37  if (buzzer_mode){
38    unsigned long currentMillis = millis();
39    if(currentMillis - previousMillis  > interval) {
40      previousMillis = currentMillis;   
41      if (ledState  == LOW)
42        ledState = HIGH;
43      else
44        ledState = LOW;
45    // Switch the LED
46    digitalWrite(ledPin, ledState);
47    }
48    tone(buzzerPin,1000);
49  }
50
51  // If alarm is off
52  if (buzzer_mode == false) {
53  
54    //  No tone & LED off
55    noTone(buzzerPin);  
56    digitalWrite(ledPin, LOW);
57  }
58
59  // If our button is pressed Switch off ringing and Setup
60  int button_state  = digitalRead(buttonPin);
61  if (button_state) {buzzer_mode = false;}
62}

//this project is made by BEASTIDREES62 https://id.arduino.cc/?code=MTxqeHweG6vL2cur&state=amxEcTB2bnNiYjluTUxmRExWaWZnOXIzUk1BLWRqZTZYUGtJNGtxODB%2Bdg%3D%3D
//  Declaring Pins
const int buzzerPin = 5;
const int ledPin = 6;
const int  motionPin = 7;
const int buttonPin = 12;

// Setting Buzzer mode to False
boolean  buzzer_mode = false;

// For LED
int ledState = LOW;
long previousMillis  = 0; 
long interval = 100;  // Interval at which LED blinks

void setup()
{
  //The Following are our output
  pinMode(ledPin,OUTPUT);
  pinMode(buzzerPin,OUTPUT);

  //Button is our Input
  pinMode(buttonPin, INPUT);
  
  // Wait before  starting the alarm
  delay(5000);
}

void loop()
{
  // To chech  whether the motion is detected or not
  if (digitalRead(motionPin)) {
    buzzer_mode  = true; 
  }

  // If alarm mode is on,blink our LED
  if (buzzer_mode){
    unsigned long currentMillis = millis();
    if(currentMillis - previousMillis  > interval) {
      previousMillis = currentMillis;   
      if (ledState  == LOW)
        ledState = HIGH;
      else
        ledState = LOW;
    // Switch the LED
    digitalWrite(ledPin, ledState);
    }
    tone(buzzerPin,1000);
  }

  // If alarm is off
  if (buzzer_mode == false) {
  
    //  No tone & LED off
    noTone(buzzerPin);  
    digitalWrite(ledPin, LOW);
  }

  // If our button is pressed Switch off ringing and Setup
  int button_state  = digitalRead(buttonPin);
  if (button_state) {buzzer_mode = false;}
}

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