RFID_Banking_System

1// Include required libraries
2#include <MFRC522.h>
3#include <LiquidCrystal_I2C.h>
4#include  <Keypad.h>
5#include <SPI.h>
6
7// Create instances
8LiquidCrystal_I2C lcd(0x27,  16, 2);
9MFRC522 mfrc522(10, 9); // MFRC522 mfrc522(SS_PIN, RST_PIN)
10
11
12char  initial_password[4] = {'0', '8', '0', '6'};  // Variable to store initial password
13String  tagUID = "63 14 92 04";  // String to store UID of tag. Change it with your tag's  UID
14char password[4];   // Variable to store users password
15boolean RFIDMode  = true; // boolean to change modes
16char key_pressed = 0; // Variable to store  incoming keys
17uint8_t i = 0;  // Variable used for counter
18const int buzzer=  5;
19
20// defining how many rows and columns our keypad have
21const byte rows  = 4;
22const byte columns = 4;
23
24// Keypad pin map
25char hexaKeys[rows][columns]  = {
26  {'1', '2', '3', 'A'},
27  {'4', '5', '6', 'B'},
28  {'7', '8', '9', 'C'},
29  {'*', '0', '#', 'D'}
30};
31
32// Initializing pins for keypad
33byte row_pins[rows]  = {A0, A1, A2, A3};
34byte column_pins[columns] = {2, 1, 0};
35
36// Create instance  for keypad
37Keypad keypad_key = Keypad( makeKeymap(hexaKeys), row_pins, column_pins,  rows, columns);
38
39void setup() {
40  lcd.init();   // LCD screen
41  lcd.backlight();
42  SPI.begin();      // Init SPI bus
43  mfrc522.PCD_Init();   // Init MFRC522
44  pinMode(buzzer, OUTPUT);
45  
46  lcd.clear();
47  lcd.setCursor(0, 0);
48  lcd.print("-----NexGO------");
49  lcd.setCursor(0, 1);
50  lcd.print("BeyonD  Payment's");
51  
52  delay(5000);
53}
54
55void loop() {
56  // System will  first look for mode
57  if (RFIDMode == true) {
58;
59
60    lcd.clear();
61    lcd.setCursor(0, 0);
62    lcd.print("Tap Your Card!");
63
64    // Look  for new cards
65    if ( ! mfrc522.PICC_IsNewCardPresent()) {
66      return;
67    }
68
69    // Select one of the cards
70    if ( ! mfrc522.PICC_ReadCardSerial())  {
71      return;
72    }
73
74    //Reading from the card
75    String tag  = "";
76    for (byte j = 0; j < mfrc522.uid.size; j++)
77    {
78      tag.concat(String(mfrc522.uid.uidByte[j]  < 0x10 ? " 0" : " "));
79      tag.concat(String(mfrc522.uid.uidByte[j], HEX));
80    }
81    tag.toUpperCase();
82
83    //Checking the card
84    if (tag.substring(1)  == tagUID)
85    {
86      // If UID of tag is matched.
87      lcd.clear();
88      
89      tone(buzzer,2000);
90      delay(200);
91      noTone(buzzer);
92      
93      lcd.print("Card Detected :)");
94
95      delay(1000);
96 
97      lcd.clear();
98      lcd.print("Enter Pin:");
99      lcd.setCursor(0,  1);
100      RFIDMode = false; // Make RFID mode false
101    }
102
103    else
104    {
105      // If UID of tag is not matched.
106      tone(buzzer,2000);
107      delay(200);
108      noTone(buzzer);
109      
110      lcd.clear();
111      lcd.setCursor(0,  0);
112      lcd.print("Processing");
113      delay(250);
114      lcd.setCursor(10,  0);
115      lcd.print(".");
116      delay(250);
117      lcd.setCursor(11, 0);
118      lcd.print(".");
119      delay(250);
120      lcd.setCursor(12, 0);
121      lcd.print(".");
122        
123      delay(250);
124
125      lcd.clear();
126      lcd.setCursor(0, 0);
127      lcd.print("Processing");
128      delay(250);
129      lcd.setCursor(10, 0);
130      lcd.print(".");
131      delay(250);
132      lcd.setCursor(11, 0);
133      lcd.print(".");
134      delay(250);
135      lcd.setCursor(12, 0);
136      lcd.print(".");
137       
138      lcd.clear();
139      
140      lcd.setCursor(0, 0);
141      lcd.print("Card Invalid!");
142      
143      tone(buzzer,5000);
144      delay(400);
145      noTone(buzzer);
146      delay(800);
147      
148      lcd.clear();
149
150      lcd.setCursor(0,  0);
151      lcd.print("Please Scan a");
152      lcd.setCursor(0, 1);
153      lcd.print("Vaild  Card.");
154
155      delay(2000);
156  
157      lcd.clear();
158    }
159  }
160
161  // If RFID mode is false, it will look for keys from keypad
162  if (RFIDMode  == false) {
163    key_pressed = keypad_key.getKey(); // Storing keys
164    if  (key_pressed)
165    {
166      password[i++] = key_pressed; // Storing in password  variable
167      lcd.print("*");
168    }
169    if (i == 4) // If 4 keys are  completed
170    {
171      delay(200);
172      if (!(strncmp(password, initial_password,  4))) // If password is matched
173      {
174        lcd.clear();
175        
176        lcd.print("Pin Accepted.");
177        
178        tone(buzzer,2000);
179        delay(200);
180        noTone(buzzer);
181        delay(500);
182
183        lcd.clear();
184        lcd.setCursor(0, 0);
185        lcd.print("Processing");
186        delay(250);
187        lcd.setCursor(10, 0);
188        lcd.print(".");
189        delay(250);
190        lcd.setCursor(11, 0);
191        lcd.print(".");
192        delay(250);
193        lcd.setCursor(12, 0);
194        lcd.print(".");
195        
196        delay(250);
197
198        lcd.clear();
199        lcd.setCursor(0, 0);
200        lcd.print("Processing");
201        delay(250);
202        lcd.setCursor(10, 0);
203        lcd.print(".");
204        delay(250);
205        lcd.setCursor(11, 0);
206        lcd.print(".");
207        delay(250);
208        lcd.setCursor(12, 0);
209        lcd.print(".");
210        
211        delay(500);
212        lcd.clear();
213        lcd.setCursor(0,  0);
214        lcd.print("Transaction");
215        lcd.setCursor(0, 1);
216        lcd.print("Completed.");
217        
218        tone(buzzer,2000);
219        delay(700);
220        noTone(buzzer);
221        
222        delay(2000);
223        
224        lcd.clear();
225        i  = 0;
226        RFIDMode = true; // Make RFID mode true
227      }
228      else    // If password is not matched
229      {
230        lcd.clear();
231        lcd.setCursor(0,  0);
232        lcd.print("Wrong Pin");
233        lcd.setCursor(0, 1);
234        lcd.print("Entered  :(");
235        
236        tone(buzzer,5000);
237        delay(500);
238        noTone(buzzer);
239
240        delay(3000);
241
242        lcd.clear();
243        i = 0;
244        RFIDMode  = true;  // Make RFID mode true
245      }
246    }
247  }
248}