Arduino based security project

arduino_dan_security

#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Keypad.h>
#define buzzer 11
#define trigPin 9
#define echoPin 10
#if defined(ARDUINO) && ARDUINO >= 100
#define printByte(args)  write(args);
#else
#define printByte(args)  print(args,BYTE);
#endif
uint8_t heart[8] = {0x0, 0xa, 0x1f, 0x1f, 0xe, 0x4, 0x0};
uint8_t duck[8]  = {0x0, 0xc, 0x1d, 0xf, 0xf, 0x6, 0x0};
long duration;
int distance, initialDistance, currentDistance, i;
int screenOffMsg = 0;
String password = "1234";
String tempPassword;
boolean activated = false; // State of the alarm
boolean isActivated;
boolean activateAlarm = false;
boolean alarmActivated = false;
boolean enteredPassword; // State of the entered password to stop the alarm
boolean passChangeMode = false;
boolean passChanged = false;
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keypressed;
//define the cymbols on the buttons of the keypads
char keyMap[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {1, 2, 3, 4}; //Row pinouts of the keypad
byte colPins[COLS] = {5, 6, 7, 8}; //Column pinouts of the keypad
Keypad myKeypad = Keypad( makeKeymap(keyMap), rowPins, colPins, ROWS, COLS);
LiquidCrystal_I2C lcd(0x27, 16, 2);// Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)
void setup(){ 
//lcd.init();
lcd.begin();
lcd.backlight();
lcd.createChar(3, heart);
lcd.createChar(4, duck);
pinMode(buzzer, OUTPUT); // Set buzzer as an output
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
lcd.clear();
lcd.setCursor(0, 0);
lcd.printByte(3);
lcd.print("---Dan_chei---");
lcd.printByte(3);
lcd.setCursor(0, 1);
lcd.printByte(4);
lcd.print("--------------");
lcd.printByte(4);
delay(3000);
lcd.clear();
}
void loop() {

  if (activateAlarm) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Alarm will be");
    lcd.setCursor(0, 1);
    lcd.print("activated in");

    int countdown = 9; // 9 seconds count down before activating the alarm
    while (countdown != 0) {
      lcd.setCursor(13, 1);
      lcd.print(countdown);
      countdown--;
      tone(buzzer, 700, 100);
      delay(1000);
    }
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Alarm Activated!");
    initialDistance = getDistance();
    activateAlarm = false;
    alarmActivated = true;
  }
  if (alarmActivated == true) {
    currentDistance = getDistance() + 10;
    if ( currentDistance < initialDistance) {
      tone(buzzer, 1000); // Send 1KHz sound signal
      lcd.clear();
      enterPassword();
    }
  }
  if (!alarmActivated) {
    if (screenOffMsg == 0 ) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("A - Activate");
      lcd.setCursor(0, 1);
      lcd.print("B - Change Pass");
      screenOffMsg = 1;
    }
    keypressed = myKeypad.getKey();
    if (keypressed == 'A') {      //If A is pressed, activate the alarm
      tone(buzzer, 1000, 200);
      activateAlarm = true;
    }
    else if (keypressed == 'B') {
      lcd.clear();
      int i = 1;
      tone(buzzer, 2000, 100);
      tempPassword = "";
      lcd.setCursor(0, 0);
      lcd.print("Current Password");
      lcd.setCursor(0, 1);
      lcd.print(">");
      passChangeMode = true;
      passChanged = true;
      while (passChanged) {
        keypressed = myKeypad.getKey();
        if (keypressed != NO_KEY) {
          if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
              keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
              keypressed == '8' || keypressed == '9' ) {
            tempPassword += keypressed;

            lcd.setCursor(i, 1);
            lcd.print("*");
            i++;
            tone(buzzer, 2000, 100);
          }
        }
        if (i > 5 || keypressed == '#') {
          tempPassword = "";
          i = 1;
          lcd.clear();
          lcd.setCursor(0, 0);
          lcd.print("Current Password");
          lcd.setCursor(0, 1);
          lcd.print(">");
        }
        if ( keypressed == '*') {
          i = 1;
          tone(buzzer, 2000, 100);
          if (password == tempPassword) {
            tempPassword = "";
            lcd.clear();
            lcd.setCursor(0, 0);
            lcd.print("Set New Password");
            lcd.setCursor(0, 1);
            lcd.print(">");
            while (passChangeMode) {
              keypressed = myKeypad.getKey();
              if (keypressed != NO_KEY) {
                if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
                    keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
                    keypressed == '8' || keypressed == '9' ) {
                  tempPassword += keypressed;
                  lcd.setCursor(i, 1);
                  lcd.print("*");
                  i++;
                  tone(buzzer, 2000, 100);
                }
              }
              if (i > 5 || keypressed == '#') {
                tempPassword = "";
                i = 1;
                tone(buzzer, 2000, 100);
                lcd.clear();
                lcd.setCursor(0, 0);
                lcd.print("Set New Password");
                lcd.setCursor(0, 1);
                lcd.print(">");
              }
              if ( keypressed == '*') {
                i = 1;
                tone(buzzer, 2000, 100);
                password = tempPassword;
                passChangeMode = false;
                passChanged = false;
                screenOffMsg = 0;
              }
            }
          }
        }
      }
    }
  }
}
void enterPassword() {
  int k = 5;
  tempPassword = "";
  activated = true;
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(" *** ALARM *** ");
  lcd.setCursor(0, 1);
  lcd.print("Pass>");
  while (activated) {
    keypressed = myKeypad.getKey();
    if (keypressed != NO_KEY) {
      if (keypressed == '0' || keypressed == '1' || keypressed == '2' || keypressed == '3' ||
          keypressed == '4' || keypressed == '5' || keypressed == '6' || keypressed == '7' ||
          keypressed == '8' || keypressed == '9' ) {
        tempPassword += keypressed;
        lcd.setCursor(k, 1);
        lcd.print("*");
        k++;
      }
    }
    if (k > 9 || keypressed == '#') {
      tempPassword = "";
      k = 5;
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print(" *** ALARM *** ");
      lcd.setCursor(0, 1);
      lcd.print("Pass>");
    }
    if ( keypressed == '*') {
      if ( tempPassword == password ) {
        activated = false;
        alarmActivated = false;
        noTone(buzzer);
        screenOffMsg = 0;
      }
      else if (tempPassword != password) {
        lcd.setCursor(0, 1);
        lcd.print("Wrong! Try Again");
        delay(2000);
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print(" *** ALARM *** ");
        lcd.setCursor(0, 1);
        lcd.print("Pass>");
      }
    }
  }
}
// Custom function for the Ultrasonic sensor
long getDistance() {
  //int i=10;

  //while( i<=10 ) {
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2;

  //sumDistance += distance;
  //}
  //int averageDistance= sumDistance/10;
  return distance;
}