Industrial Safety & Security System

// Library Files
#include <DHT.h>
#include <LiquidCrystal.h>
#include <Servo.h>

// LCD Display
#include <LiquidCrystal.h> // includes the LiquidCrystal Library 
LiquidCrystal lcd(6, 5, 4, 3, 2, 1); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)

//Temperature
#define DHTPIN 11     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE);
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value

//Motion Sensor
int ledpin1 = 8;// Digital pin n D6
int pir1;
int sensor1 = 10 ;//motion senson1 on D7

//Gas Sensor
const int smoke = A0;
const int exFan = 7; //exFan
const int threshold = 400;//gas sensor

//Vibration sensor
int vibration = A8; //vibration sensor D0
int LedPin3 = 9; //vibration in led D1

//dust sensor
int measurePin = A15;
int ledPower = 52;

unsigned int samplingTime = 280;
unsigned int deltaTime = 40;
unsigned int sleepTime = 9680;

float voMeasured = 0;
float calcVoltage = 0;
float dustDensity = 0;

void setup() {

  //Motion
  pinMode(sensor1, INPUT);   // declare sensor as input
  pinMode(ledpin1, OUTPUT);  // declare LED as output

  //gas sensor
  pinMode(smoke, INPUT);
  pinMode(exFan, OUTPUT); //Buzzpin for fire alarm

  //temperature
  dht.begin();

  //Vibration
  pinMode (vibration, INPUT);
  pinMode(LedPin3, OUTPUT);

  //Display
  lcd.begin(16, 2);
  lcd.print("Smart Industry");
//  Serial.begin(9600);/
}

void loop() {
  gasSensor();
  temperature();
  vibration_sensor();
  motionDetected1();
  lcd.clear();
  lcd.println(temp);
}

//Vibration
void vibration_sensor() {
  int vibrationvalue = analogRead(vibration);
//  Serial.println(vibrationvalue);/

  if (vibrationvalue == 0) {
    digitalWrite(LedPin3, HIGH);
//    Serial.println("\n Vibration");/
    delay(1000);
  }

  else {
    digitalWrite(LedPin3, LOW);
    Serial.println("\n No Vibration");
    delay(1000);
  }
  //  delay(500);
}


//temperature
void temperature() {
  delay(1000);
  //Read data and store it to variables hum and temp
  hum = dht.readHumidity();
  temp = dht.readTemperature();
//  Serial.print("Humidity: ");
//  Serial.print(hum);
//  Serial.print(" %, Temp: ");
//  Serial.print(temp);
//  Serial.println(" Celsius");
  delay(1000);
}

//Motion Sensor Detection
void motionDetected1() {
  pir1 = digitalRead (sensor1);
  //  Serial.println(pir1);

  if (pir1 == HIGH) {
    digitalWrite(ledpin1, HIGH);
//    Serial.println("\n Motion Detected");/
    // Serial.println(pir1);
    delay(50);
    digitalWrite(ledpin1, LOW);

  }
  else {
    digitalWrite(ledpin1, LOW);
//    Serial.println(" Motion Not Detected");/
    //Serial.println(pir1);
    delay(50);
  }
}

//gas sensor
void gasSensor() {
  int analogValue = analogRead(smoke);

//  Serial.println("\n Gas value = ");/
//  Serial.println(analogValue);/

  if (analogValue > threshold) {
    digitalWrite(exFan, HIGH);
  }
  else if (analogValue == threshold) {
    digitalWrite(exFan, LOW);
    delay(400);
    //digitalWrite(Buzzerpin, LOW);
  }
  else {
    digitalWrite(exFan, LOW);
  }

  //  Serial.println(analogRead(A0));
  delay(500);
}

#include <Keypad.h>
#include <LiquidCrystal.h>
#include <Servo.h>

Servo myservo;
int pos = 0; // LCD Connections
const byte rows = 4;
const byte cols = 4;

char key[rows][cols] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[rows] = {9, 8, 7, 6};
byte colPins[cols] = {5, 4, 3, 2};
Keypad keypad = Keypad(makeKeymap(key), rowPins, colPins, rows, cols);
const char* password = "4567";
int currentposition = 0;
int redled = 10;
int greenled = 11;
int invalidcount = 12;

void setup()
{
  //  keypad
  Serial.begin(9600);
  pinMode(redled, OUTPUT);
  pinMode(greenled, OUTPUT);
  myservo.attach(12); //SERVO ATTACHED//
}
void loop()
{
  mykeypad();
}

void mykeypad() {
  char code = keypad.getKey();
  if (code)
    Serial.print(code);
  if (code != NO_KEY) {
    if (code == password[currentposition]) {
      ++currentposition;
      if (currentposition == 4) {
        digitalWrite(greenled, HIGH);
        unlockdoor();
        currentposition = 0;
        digitalWrite(greenled, LOW);
      }
    }
    else {
      ++invalidcount;
      incorrect();
      currentposition = 0;
    }
  }
}

//Door Open
void unlockdoor()
{
  delay(900);

  for (pos = 90; pos >= 0; pos -= 5) {
    myservo.write(pos); // tell servo to go to position in variable 'pos'
    delay(5); // waits 15ms for the servo to reach the position
  }
  delay(3000);

  for (pos = 0; pos <= 90; pos += 5) { // in steps of 1 degree
    myservo.write(pos); // tell servo to go to position in variable 'pos'
    delay(15);
    currentposition = 0;
  }
}

//Wrong Code
void incorrect()
{
  delay(500);
  digitalWrite(redled, HIGH);
  delay(3000);
  digitalWrite(redled, LOW);
}