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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>FireGuardian 3000 - Arduino Fire Alarm System</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/feather-icons/dist/feather.min.js"></script>
    <script src="https://unpkg.com/feather-icons"></script>
    <link rel="stylesheet" href="style.css">
</head>
<body class="bg-gray-100 min-h-screen">
    <custom-header></custom-header>
    
    <main class="container mx-auto px-4 py-8">
        <div class="grid grid-cols-1 lg:grid-cols-2 gap-8">
            <!-- Schematic Diagram -->
            <div class="bg-white rounded-xl shadow-lg p-6">
                <h2 class="text-2xl font-bold text-red-600 mb-4 flex items-center">
                    <i data-feather="alert-triangle" class="mr-2"></i>
                    System Schematic Diagram
                </h2>
                <div class="border-2 border-gray-200 rounded-lg p-4 bg-gray-50">
                    <div class="w-full bg-white p-4 rounded-lg">
                        <img src="http://static.photos/technology/1024x576/42" alt="Fire Alarm Schematic Preview" class="w-full h-auto rounded-lg mb-4 border">
                        <a href="schematic.html" class="block text-center bg-blue-500 hover:bg-blue-600 text-white py-2 px-4 rounded-lg transition-colors">
                            <i data-feather="maximize-2" class="inline mr-2"></i> View Full Schematic Diagram
                        </a>
                    </div>
<div class="mt-4 grid grid-cols-2 gap-2">
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-red-500 rounded-full mr-2"></div>
                            <span>Arduino Microcontroller</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-blue-500 rounded-full mr-2"></div>
                            <span>Smoke Detectors</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-yellow-500 rounded-full mr-2"></div>
                            <span>Manual Call Points</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-green-500 rounded-full mr-2"></div>
                            <span>Alarm Bell</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-purple-500 rounded-full mr-2"></div>
                            <span>LCD Display</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-orange-500 rounded-full mr-2"></div>
                            <span>Control Buttons</span>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Arduino Code Section -->
            <div class="bg-white rounded-xl shadow-lg p-6">
                <h2 class="text-2xl font-bold text-blue-600 mb-4 flex items-center">
                    <i data-feather="code" class="mr-2"></i>
                    Arduino Implementation
                </h2>
                <div class="bg-gray-800 text-gray-100 p-4 rounded-lg overflow-x-auto">
                    <pre><code class="language-c">
// Fire Alarm System Code for Arduino
#include <LiquidCrystal.h>

// Initialize LCD (RS, E, D4, D5, D6, D7)
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// Pin Definitions
const int smokeSensorPin = A0;
const int manualCallPin = 7;
const int alarmBellPin = 8;
const int silenceButtonPin = 9;
const int resetButtonPin = 10;

// Variables
int smokeValue = 0;
bool alarmActive = false;
bool systemSilenced = false;

void setup() {
  // Initialize components
  pinMode(smokeSensorPin, INPUT);
  pinMode(manualCallPin, INPUT_PULLUP);
  pinMode(alarmBellPin, OUTPUT);
  pinMode(silenceButtonPin, INPUT_PULLUP);
  pinMode(resetButtonPin, INPUT_PULLUP);
  
  // LCD Setup
  lcd.begin(16, 2);
  lcd.print("FireGuardian 3000");
  lcd.setCursor(0, 1);
  lcd.print("System Ready");
  
  Serial.begin(9600);
}

void loop() {
  // Read sensor values
  smokeValue = analogRead(smokeSensorPin);
  bool manualTrigger = !digitalRead(manualCallPin);
  bool silencePressed = !digitalRead(silenceButtonPin);
  bool resetPressed = !digitalRead(resetButtonPin);
  
  // Check for fire condition
  if ((smokeValue > 300 || manualTrigger) && !systemSilenced) {
    triggerAlarm();
  }
  
  // Handle silence button
  if (silencePressed && alarmActive) {
    silenceAlarm();
  }
  
  // Handle reset button
  if (resetPressed) {
    resetSystem();
  }
  
  // Update LCD
  updateDisplay();
  delay(100);
}

void triggerAlarm() {
  alarmActive = true;
  digitalWrite(alarmBellPin, HIGH);
  lcd.clear();
  lcd.print("FIRE DETECTED!");
  lcd.setCursor(0, 1);
  lcd.print("EVACUATE AREA");
}

void silenceAlarm() {
  systemSilenced = true;
  digitalWrite(alarmBellPin, LOW);
  lcd.clear();
  lcd.print("ALARM SILENCED");
  lcd.setCursor(0, 1);
  lcd.print("AWAITING RESET");
}

void resetSystem() {
  alarmActive = false;
  systemSilenced = false;
  digitalWrite(alarmBellPin, LOW);
  lcd.clear();
  lcd.print("FireGuardian 3000");
  lcd.setCursor(0, 1);
  lcd.print("System Ready");
}

void updateDisplay() {
  if (!alarmActive) {
    lcd.setCursor(0, 1);
    lcd.print("Smoke: ");
    lcd.print(smokeValue);
    lcd.print("   ");
  }
}
                    </code></pre>
                </div>
                <div class="mt-4 bg-yellow-50 border-l-4 border-yellow-400 p-4">
                    <div class="flex">
                        <div class="flex-shrink-0">
                            <i data-feather="alert-circle" class="text-yellow-500"></i>
                        </div>
                        <div class="ml-3">
                            <p class="text-sm text-yellow-700">
                                <strong>Important:</strong> This code requires the LiquidCrystal library. 
                                Connect components as shown in the schematic diagram.
                            </p>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Component Details -->
        <div class="mt-8 bg-white rounded-xl shadow-lg p-6">
            <h2 class="text-2xl font-bold text-gray-800 mb-6 flex items-center">
                <i data-feather="list" class="mr-2"></i>
                System Components
            </h2>
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-red-600 flex items-center">
                        <i data-feather="cpu" class="mr-2"></i>
                        Arduino Uno
                    </h3>
                    <p class="text-gray-600 mt-2">Microcontroller brain of the system that processes all inputs and controls outputs.</p>
                </div>
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-blue-600 flex items-center">
                        <i data-feather="eye" class="mr-2"></i>
                        Smoke Detector
                    </h3>
                    <p class="text-gray-600 mt-2">Industrial-grade optical smoke detector (MQ-2 sensor recommended).</p>
                </div>
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-yellow-600 flex items-center">
                        <i data-feather="alert-circle" class="mr-2"></i>
                        Manual Call Point
                    </h3>
                    <p class="text-gray-600 mt-2">Break-glass unit for manual fire alarm activation.</p>
                </div>
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-green-600 flex items-center">
                        <i data-feather="bell" class="mr-2"></i>
                        Alarm Bell
                    </h3>
                    <p class="text-gray-600 mt-2">110dB piezoelectric alarm siren for audible alert.</p>
                </div>
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-purple-600 flex items-center">
                        <i data-feather="monitor" class="mr-2"></i>
                        LCD Display
                    </h3>
                    <p class="text-gray-600 mt-2">16x2 character LCD for system status information.</p>
                </div>
                <div class="border rounded-lg p-4 hover:shadow-md transition-shadow">
                    <h3 class="font-semibold text-lg text-orange-600 flex items-center">
                        <i data-feather="toggle-right" class="mr-2"></i>
                        Control Buttons
                    </h3>
                    <p class="text-gray-600 mt-2">Momentary push buttons for silence and system reset functions.</p>
                </div>
            </div>
        </div>
    </main>

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