Arduino Based Security Alarm

প্রজেক্টগুলোতে যে সকল ইলেক্ট্রনিক্স কম্পোনেন্ট ব্যবহার করা হয়েছে,

• Arduino UNO
• Motion sensor
• Buzzer
• Led
• Bread board
• Switch
• Resistor
•  

->  Arduino এর  +5V--------- Breadboard

->  Arduino এর যেকোন GND--------- Breadboard 

-> LED ছোট প্রান্ত----- Breadboard এর GND

-> LED  বড় প্রান্ত ----- 220 বা 330 ohm Resistor ----- Arduino D6 Pin

-> Buzzer এর পজিটিভ প্রান্ত------- Arduino D5 Pin

-> Buzzer নেগেটিভ প্রান্ত------Breadboard এর GND

-> Push Button 3(চিত্রে)---- Arduino D12 Pin

-> Push Button 4(চিত্রে)---- 1k ohm----GND

-> Push Button 2(চিত্রে)----+5v (Breadboard)

-> PIR Module Positive  Pin(Vcc) ---- +5v (Breadboard)

-> PIR Module Negative Pin( GND) ---- GND (Breadboard)

-> PIR Module Sensor Pin(OUT) ---- Arduino D7

নিচের কোডটি কপি করে Arduino Uno তে লোড করুন

//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;}
}