RFID and Keypad based Security Device with Alert System using Arduino & ESP32

1#include <MFRC522.h>
2#include <SoftwareSerial.h>
3#include <Wire.h>
4#include <SPI.h> 
5#include <Keypad.h> 
6#include <Servo.h> 
7#include <LiquidCrystal_I2C.h> 
8
9MFRC522 mfrc522 (10, 9);
10LiquidCrystal_I2C lcd(0x27, 16, 2);
11
12#define Password_Length 10
13
14char userInput[Password_Length];
15char Master[Password_Length] = "123123123";
16char customKey;
17byte pressCount = 0;
18int position = 0;
19const int ButtonPin = 4;
20int buttonState = 0;
21int Doorrelay = 3;
22int RedPinLock = 5;
23int BuzzPin = 8;
24
25#define NOTE_G4  392
26#define NOTE_C5  523
27#define NOTE_G5  784
28#define NOTE_C6  1047
29
30int TrueMelody[] = {NOTE_G5, NOTE_C6};
31int TrueNoteDurations[] = {12, 8};
32
33int FalseMelody[] = {NOTE_C6, NOTE_G5};
34int FalseNoteDurations[] = {12, 8};
35
36#define playTrueMelody() playMelody(TrueMelody, TrueNoteDurations, 2)
37#define playFalseMelody() playMelody(FalseMelody, FalseNoteDurations, 2)
38
39const byte ROWS = 4;
40const byte COLS = 3;
41
42char twelveKeys[ROWS][COLS] = {
43  {'1', '2', '3'},
44  {'4', '5', '6'},
45  {'7', '8', '9'},
46  {'*', '0', '#'} // * = CLEAR, # = ENTER
47};
48
49const byte rowPins[ROWS] = { 2, A3, A2, A1 };
50const byte colPins[COLS] = { A0, 6, 7 };   
51
52Keypad customKeypad = Keypad( makeKeymap(twelveKeys), rowPins, colPins, ROWS, COLS );
53
54String tagUID = "93 B0 83 0A";  // String to store UID of tag. 
55boolean RFIDMode = true; // boolean to change modes
56boolean NormalMode = true; // boolean to change modes
57
58void setup()
59{
60    lcd.init();
61    lcd.backlight();
62    lcd.clear();
63    Serial.begin(9600);
64    Serial.println("Scan your Tag..... ");
65    pinMode(ButtonPin, INPUT);
66    pinMode(RedPinLock, OUTPUT);
67    pinMode(BuzzPin, OUTPUT);
68    pinMode(Doorrelay, OUTPUT);
69    LockedPosition(true);
70    SPI.begin();      // Init SPI bus
71    mfrc522.PCD_Init();   // Init MFRC522
72    lcd.begin(16, 2);
73    lcd.setCursor(0, 0);
74    lcd.print("  WELCOME !!");
75    lcd.setCursor(0, 1);
76    lcd.print(" SCAN THE TAG");
77}
78
79// MAIN PROGRAM LOOP
80void loop()
81{  
82  buttonState = digitalRead(ButtonPin);
83
84    if (buttonState == HIGH)
85  {
86    digitalWrite(Doorrelay, HIGH);
87    delay(7000);
88    digitalWrite(Doorrelay, LOW);
89    mfrc522.PCD_Init();   // Init MFRC522
90  }
91  else
92  {
93    digitalWrite(Doorrelay, LOW);
94  }
95  
96  if ( NormalMode == true ) //System will first look for mode
97  {
98    if ( RFIDMode == true ) //Function to receive message
99    {
100      // Look for new cards
101      if ( ! mfrc522.PICC_IsNewCardPresent() ) 
102      {
103        return;
104      }
105      // Select one of the cards
106      if ( ! mfrc522.PICC_ReadCardSerial() )
107      {
108        return;
109      }
110      // Reading from the card
111      String tag = "" ;
112      for ( byte j = 0; j < mfrc522.uid.size; j++)
113      {
114        tag.concat(String(mfrc522.uid.uidByte[j] < 0x10 ? " 0" : " " ));
115        tag.concat(String(mfrc522.uid.uidByte[j], HEX));
116      }
117      tag.toUpperCase();
118      // Checking the card
119      if (tag.substring(1) == tagUID )
120      {
121        playTrueMelody();
122        Serial.println();
123        Serial.println("Tag Matched !!");
124        Serial.println("Enter Your Password: ");
125        Serial.println(" ");
126        lcd.clear();
127        lcd.setCursor(0,0);
128        lcd.print("Your Tag Matched");
129        lcd.setCursor(0,1);
130        lcd.print(" Access Granted");
131        delay(500);
132        lcd.clear();
133        lcd.setCursor(0,0);
134        lcd.print(" Type Password:");
135        RFIDMode = false; // Make RFID mode false
136      }
137      else
138      {
139        playFalseMelody();
140        Serial.println(" ");
141        Serial.println("Wrong Tag Shown");
142        Serial.println(" Access Denied");
143        tone(BuzzPin, 400, 500);
144        lcd.clear();
145        lcd.setCursor(0,0);
146        lcd.print("  Wrong Tag !!");
147        lcd.setCursor(0,1);
148        lcd.print(" Access Denied");
149        delay(500);
150        lcd.clear();
151        lcd.setCursor(0, 0);
152        lcd.print("   WELCOME !!");
153        lcd.setCursor(0, 1);
154        lcd.print(" SCAN THE TAG");
155        RFIDMode = true;
156      }
157    }
158    
159    // If RFID mode is false, it will look for keys from keypad
160
161    if ( RFIDMode == false )
162    {
163      customKey = customKeypad.waitForKey();
164
165      if ( customKey != NO_KEY && customKey != '*' && customKey != '#')
166      {
167        userInput[pressCount] = customKey;
168        lcd.setCursor(pressCount + 4, 1);
169        lcd.print("*");
170        pressCount++;
171        tone(BuzzPin, 400, 100);
172      }
173      else if ( customKey == '*' )
174      {
175        tone(BuzzPin, 400, 100);
176        lcd.clear();
177        clearData();
178        RFIDMode = true;
179      }
180      else if ( customKey == '#' )
181      {
182        tone(BuzzPin, 400, 100);
183        lcd.clear();
184        lcd.setCursor(0,0);
185        tone(BuzzPin, 800, 1000);
186        lcd.print("PASSWORD INVALID"); 
187        delay(2000);
188        lcd.clear();
189        clearData();
190        RFIDMode = true;
191      }
192      if ( pressCount == 9 )
193      {
194        lcd.clear();
195        waitHere();
196      }
197    }
198  }
199}
200
201// THIS FUNCTION CHECKS THE PASSWORD STRING
202void waitHere()
203{
204  lcd.setCursor(0,0);
205  lcd.print(" Type Password:");
206  lcd.setCursor(0,1);
207  lcd.print("   *********   ");
208
209  customKey = customKeypad.waitForKey();  // Program will halt here until a key is pushed
210
211  if ( customKey != NO_KEY && customKey == '#' ) // The ENTER is pushed and the password goes through the routine
212  {
213    lcd.clear();
214    lcd.setCursor(0,0);
215
216    if ( !strcmp(userInput, Master))
217    {
218      lcd.setCursor(0,0);
219      lcd.print(" ACCESS GRANTED");
220      lcd.setCursor(0,1);
221      lcd.print("     WELCOME !!");
222      LockedPosition(false);
223      digitalWrite(Doorrelay, HIGH);
224      delay(7000);
225      lcd.clear();
226      clearData();
227      RFIDMode = true;
228    }
229    else if ( strcmp(userInput, Master))
230    {
231      lcd.setCursor(0,0);
232      lcd.print(" ACCESS DENIED");
233      LockedPosition(true);
234      digitalWrite(Doorrelay, LOW);
235      tone(BuzzPin, 800, 2000);
236      delay(500);
237      lcd.clear();
238      clearData();
239      RFIDMode = true;
240    }
241  }
242  
243  if (customKey != NO_KEY && customKey == '*')  // If the CLEAR button is pushed, the data is cleared and the program starts over.
244  {
245    lcd.clear();
246    clearData(); 
247    RFIDMode = true;
248  }
249  if (customKey != NO_KEY && customKey == '0')  // This numberical button has no purpose and does nothing when pressed.
250  {
251    waitHere();
252  }
253  
254  if (customKey != NO_KEY && customKey == '1')  // This numberical button has no purpose and does nothing when pressed.
255  {
256    waitHere();
257  }
258
259  if (customKey != NO_KEY && customKey == '2')  // This numberical button has no purpose and does nothing when pressed.
260  {
261    waitHere();
262  }
263
264  if (customKey != NO_KEY && customKey == '3')  // This numberical button has no purpose and does nothing when pressed.
265  {
266    waitHere();
267  }
268
269  if (customKey != NO_KEY && customKey == '4')  // This numberical button has no purpose and does nothing when pressed.
270  {
271    waitHere();
272  }
273
274  if (customKey != NO_KEY && customKey == '5')  // This numberical button has no purpose and does nothing when pressed.
275  {
276    waitHere();
277  }
278
279  if (customKey != NO_KEY && customKey == '6')  // This numberical button has no purpose and does nothing when pressed.
280  {
281    waitHere();
282  }
283  if (customKey != NO_KEY && customKey == '7')  // This numberical button has no purpose and does nothing when pressed.
284  {
285    waitHere();
286  }
287
288  if (customKey != NO_KEY && customKey == '8')  // This numberical button has no purpose and does nothing when pressed.
289  {
290    waitHere();
291  }
292
293  if (customKey != NO_KEY && customKey == '9')  // This numberical button has no purpose and does nothing when pressed.
294  {
295    waitHere();
296  }
297}
298
299
300void LockedPosition(int locked)
301{
302  if (locked)
303  {
304    digitalWrite(RedPinLock, HIGH);
305    digitalWrite(Doorrelay, LOW);
306  }
307  else
308  {
309    digitalWrite(RedPinLock, LOW);
310    digitalWrite(Doorrelay, HIGH);
311  }
312  delay(7000);
313}
314
315
316// CLEARS THE ARRAY DATA, STARTS ALL OVER AGAIN
317void clearData()
318{
319  while ( pressCount != 0 )
320  {
321    userInput[pressCount--] = 0;  // Clears out the user input data, both digit and string data are reset to zero
322  }
323  setup();                         // Returns program back to the beginning
324}
325
326void playMelody(int *melody, int *noteDurations, int notesLength)
327{
328  pinMode(BuzzPin, OUTPUT);
329
330  for (int thisNote = 0; thisNote < notesLength; thisNote++) {
331    int noteDuration = 1000 / noteDurations[thisNote];
332    tone(BuzzPin, melody[thisNote], noteDuration);
333    int pauseBetweenNotes = noteDuration * 1.30;
334    delay(pauseBetweenNotes);
335    noTone(BuzzPin);
336  }
337}

1#include <WiFi.h>
2#include <WiFiClientSecure.h>
3#include <UniversalTelegramBot.h>
4#include <ArduinoJson.h>
5
6// Set GPIOs for LED and reedswitch
7const int reedSwitch = 19;
8const int led = 2; //optional
9
10// Detects whenever the door changed state
11bool changeState = false;
12
13// Holds reedswitch state (1 = opened, 0 = close)
14bool state;
15String doorState;
16
17// Auxiliary variables (it will only detect changes that are 1500 milliseconds apart)
18unsigned long previousMillis = 0; 
19const long interval = 1500;
20
21const char* ssid = "Huawei Y9 Prime";
22const char* password = "password";
23
24// Telegram BOT
25#define BOTtoken "5622530230:AAEiy-XuQHy4a2knwZAPl5mBe_QoGl56950"  // Bot Token (From Botfather)
26
27#define CHAT_ID "1394606528"
28
29WiFiClientSecure client;
30UniversalTelegramBot bot(BOTtoken, client);
31
32// Runs whenever the reedswitch changes state
33ICACHE_RAM_ATTR void changeDoorStatus() {
34  Serial.println("State changed");
35  changeState = true;
36}
37
38void setup() {
39  // Serial port for debugging purposes
40  Serial.begin(115200);  
41
42  // Read the current door state
43  pinMode(reedSwitch, INPUT_PULLUP);
44  state = digitalRead(reedSwitch);
45
46  // Set LED state to match door state
47  pinMode(led, OUTPUT);
48  digitalWrite(led, !state);
49  
50  // Set the reedswitch pin as interrupt, assign interrupt function and set CHANGE mode
51  attachInterrupt(digitalPinToInterrupt(reedSwitch), changeDoorStatus, CHANGE);
52
53  // Connect to Wi-Fi
54  WiFi.mode(WIFI_STA);
55  WiFi.begin(ssid, password);
56  client.setCACert(TELEGRAM_CERTIFICATE_ROOT); // Add root certificate for api.telegram.org
57  while (WiFi.status() != WL_CONNECTED) {
58    delay(5000);
59    Serial.print(".");
60  }
61  Serial.println("");
62  Serial.println("WiFi connected");  
63
64  bot.sendMessage(CHAT_ID, "Bot started up", "");
65}
66
67void loop() {
68  if (changeState){
69    unsigned long currentMillis = millis();
70    if(currentMillis - previousMillis >= interval) {
71      previousMillis = currentMillis;
72      // If a state has occured, invert the current door state   
73        state = !state;
74        if(state) {
75          doorState = "open";
76        }
77        else{
78          doorState = "closed";
79        }
80        digitalWrite(led, !state);
81        changeState = false;
82        Serial.println(state);
83        Serial.println(doorState);
84        
85        //Send notification
86        bot.sendMessage(CHAT_ID, "The door is " + doorState, "");
87    }  
88  }
89}