Unique Biometric Attendance System Based on Fingerprint

Attendance systems are generally everyday use systems to check the existence in workplaces and schools. From physically denoting the attendance in attendance registers to utilizing fancy applications and biometric systems, these systems have enhanced altogether. In our past ventures, we have secured couple of other electronic attendance system project utilizing RFID and AVR microcontroller, 8051 and raspberry Pi. In this task, we've used unique finger sensor Module and Arduino to take and keep participation information and records. By utilizing unique finger module sensor, the system will turn out to be more secure for the end user. Following segments clarifies specialized points of interest of making a unique fingerprint based biometric attendance system using Arduino.

Project Description:

In this unique finger print attendance circuit, we utilized Fingerprint Sensor module to verify a genuine individual or worker by taking their finger input to the system. Here we are utilizing 4 push buttons to select, Delete, UP/Down. Select and DEL key has triple highlights. Enroll key is utilized for enlistment of another individual into the System. So when the end user needs to select new finger then he/she have to press ENROLL key then LCD requests the ID, where end user need to be store the unique mark picture. Presently if the end user does not have any desire to continue further, he/she can press ENROLL key again to return. This time ENROLL key carry on as Back key, i.e. ENROLL key has both enlistment and back capacity. Other than enroll key is likewise used to download participation information over sequential screen. Essentially, DEL/OK key likewise has a similar twofold capacity like when end user enlists new finger, at that point he/she have to choose finger ID by utilizing another two key to be specific UP and DOWN. Immediately, end user need to press DEL/OK key (this time this key carry on like OK) to continue with chosen ID. Furthermore, Del key is utilized for reset or erase information from EEPROM of Arduino.

Important Components

1. Power
2. 2.2K resistor (1 piece)
3. 1K Resistor (2 pieces)
4. LEDs  (1 piece)
5. Push Button (4 pieces)
6. Arduino (1 piece)
7. Bread Board (1 piece)
8. RTC Module (1 piece)
9. Finger print Module (1 piece)
10. Connecting Wires
11. Buzzer
12. Box
13. 16x2 LCD (1 piece)

Fingerprint based biometric attendance system Processing

The process of this unique Fingerprint based biometric attendance system is genuinely basic. As a matter of first importance, the end user needs to enroll fingerprints of the user with the assistance of push button. To do this, end user need to press ENROLL key and after that LCD requests entering ID for the unique mark to spare it in memory by ID name. So now the end user needs to enter ID by UP/DOWN keys. In the wake of choosing ID, the user needs to squeeze OK key (DEL key). Presently LCD will request to put finger over the unique fingerprint module. Presently the end user needs to put his finger over unique fingerprint module and after that the module takes finger picture. Remarkably, the LCD will state to expel finger from fingerprint module, and again request to put finger once more. Presently the end user needs to put his finger again and module takes a picture and converts it into layouts and stores it by chose ID into the finger print module’s memory. Presently the end user will be enlisted and he/she can feed the attendance by putting their finger over fingerprint module. By a similar technique, every one of the clients will be enrolled into the system. 

Now, if the end user needs to evacuate or erase any of the put away ID or unique mark (Fingerprint), at that point he/she have to press DEL key. Once Delete key is squeezed LCD will request to choose ID that should be erased. Now the end user needs to choose ID and press OK key (same DEL key). Now, LCD will tell you that unique mark (Fingerprint) has been erased effectively.

Memory

Well, it depends on your Arduino Uno type. 

Circuit Diagram

Code 

void setup() 
{    
     delay(1000);    
     lcd.begin(16,2);    
     Serial.begin(9600);    
     pinMode(enroll, INPUT_PULLUP);    
     pinMode(up, INPUT_PULLUP);    
     pinMode(down, INPUT_PULLUP);    
     pinMode(del, INPUT_PULLUP);    
     pinMode(match, INPUT_PULLUP);    
     pinMode(buzzer, OUTPUT);    
     pinMode(indFinger, OUTPUT);    
     digitalWrite(buzzer, LOW);    
     if(digitalRead(enroll) == 0)    
     {      
        digitalWrite(buzzer, HIGH);      
        delay(500);      
        digitalWrite(buzzer, LOW);      
        lcd.clear();      
        lcd.print("Please wait");      
        lcd.setCursor(0,1);      
        lcd.print("Downloding Data");

Now, it's time to copy or write the code for the clearing of attendance record from EEPROM.

    if(digitalRead(del) == 0)    
    {      
      lcd.clear();      
      lcd.print("Please Wait");      
      lcd.setCursor(0,1);      
      lcd.print("Reseting.....");      
      for(int i=1000;i<1005;i++)      
      EEPROM.write(i,0);      
      for(int i=0;i<841;i++)      
      EEPROM.write(i, 0xff);      
      lcd.clear();      
      lcd.print("System Reset");      
      delay(1000);    
      }

Now, if you want to display the "WELCOME" message on the LCD, then you have to write this code first. And yes, also for initiated RTC module.

void loop() 
{    
    now = rtc.now();    
    lcd.setCursor(0,0);    
    lcd.print("Time->");    
    lcd.print(now.hour(), DEC);    
    lcd.print(':');    
    lcd.print(now.minute(), DEC);    
    lcd.print(':');    
    lcd.print(now.second(), DEC);    
    lcd.print("    ");      
    lcd.setCursor(0,1);    
    lcd.print("Date->");    
    lcd.print(now.day(), DEC);    
    lcd.print('/');    
    lcd.print(now.month(), DEC);    
    lcd.print('/');    
    lcd.print(now.year(), DEC);

Now, you've to wait for the fingerprint that is taken by the fingerprint module. It will match the image ID with the stored ID. Obviously, there is no doubt in it that it will move forward when the match will become approved. Now, its time to check the DEL keys.

int result=getFingerprintIDez();    
if(result>0)    
{              
    digitalWrite(indFinger, LOW);              
    digitalWrite(buzzer, HIGH);              
    delay(100);              
    digitalWrite(buzzer, LOW);              
    lcd.clear();              
    lcd.print("ID:");              
    lcd.print(result);              
    lcd.setCursor(0,1);              
    lcd.print("Please Wait....");              
    delay(1000);              
    attendance(result);              
    lcd.clear();              
    lcd.print("Attendance ");              
    lcd.setCursor(0,1);              
    lcd.print("Registed");              
    delay(1000);        
  digitalWrite(indFinger, HIGH);        
  return; 
}

The code which we are going to mentioned below is basically used for printing the image of fingerprint and shift them into the template and also saves into the fingerprint module's memory. 

uint8_t getFingerprintEnroll() 
{  
    int p = -1;  
    lcd.clear();  
    lcd.print("finger ID:");   
    lcd.print(id);  
    lcd.setCursor(0,1);    
    lcd.print("Place Finger");  
    delay(2000);  
    while (p != FINGERPRINT_OK)  
    {    
       p = finger.getImage();

The function that is given below is used for keeping the attendance date and time in the appointed slots of the EEPROM...

void attendance(int id) 
{  
    int user=0,eepLoc=0;  
    if(id == 1)  
    {    
     eepLoc=0;    
     user=user1++;  
    }  
     else if(id == 2)  
    {    
     eepLoc=210;    
     user=user2++;  
    }  
     else if(id == 3)  .... ....  .....

Now, the function which we have written below is used for the enchanting information from the EEPROM and you can send it to the serial monitor.

void download(int eepIndex) 
{                        
                    if(EEPROM.read(eepIndex) != 0xff)            
                     {              
                      Serial.print("T->");               
                      if(EEPROM.read(eepIndex)<10)              
                      Serial.print('0');              
                      Serial.print(EEPROM.read(eepIndex++));              
                      Serial.print(':');                
                      if(EEPROM.read(eepIndex)<10)              
                      Serial.print('0');              
                      Serial.print(EEPROM.read(eepIndex++));  .... 
                      ....  
                      .....

 Code

#include<EEPROM.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);
#include <SoftwareSerial.h>
SoftwareSerial fingerPrint(2, 3);

#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 rtc;

#include "Adafruit_Fingerprint.h"
uint8_t id;
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&fingerPrint);

#define enroll 14
#define del 15
#define up 16
#define down 17
#define match 5
#define indFinger 7
#define buzzer 5

#define records 4  // 5 for 5 user

int user1,user2,user3,user4,user5;

DateTime now;

void setup()
{
   delay(1000);
   lcd.begin(16,2);
   Serial.begin(9600);
   pinMode(enroll, INPUT_PULLUP);
   pinMode(up, INPUT_PULLUP);
   pinMode(down, INPUT_PULLUP);
   pinMode(del, INPUT_PULLUP);
   pinMode(match, INPUT_PULLUP);
   pinMode(buzzer, OUTPUT);
   pinMode(indFinger, OUTPUT);
   digitalWrite(buzzer, LOW);
   if(digitalRead(enroll) == 0)
   {
     digitalWrite(buzzer, HIGH);
     delay(500);
     digitalWrite(buzzer, LOW);
     lcd.clear();
     lcd.print("Please wait");
     lcd.setCursor(0,1);
     lcd.print("Downloding Data");

      Serial.println("Please wait");
     Serial.println("Downloding Data..");
     Serial.println();

      Serial.print("S.No.         ");
     for(int i=0;i<records;i++)
     {
             digitalWrite(buzzer, HIGH);
     delay(500);
     digitalWrite(buzzer, LOW);
       Serial.print("         User ID");
       Serial.print(i+1);
       Serial.print("                   ");
     }
     Serial.println();
     int eepIndex=0;
     for(int i=0;i<30;i++)
     {
       if(i+1<10)
       Serial.print('0');
       Serial.print(i+1);
       Serial.print("          ");
       eepIndex=(i*7);
       download(eepIndex);
       eepIndex=(i*7)+210;
       download(eepIndex);
       eepIndex=(i*7)+420;
       download(eepIndex);
       eepIndex=(i*7)+630;
       download(eepIndex);
     //  eepIndex=(i*7)+840;   // 5th user
     //  download(eepIndex);
       Serial.println();
     }
   }
   if(digitalRead(del) == 0)
   {
     lcd.clear();
     lcd.print("Please Wait");
     lcd.setCursor(0,1);
     lcd.print("Reseting.....");
     for(int i=1000;i<1005;i++)
     EEPROM.write(i,0);
     for(int i=0;i<841;i++)
     EEPROM.write(i, 0xff);
     lcd.clear();
     lcd.print("System Reset");
     delay(1000);
   }

   
   lcd.clear();
   lcd.print("   Attendance   ");
   lcd.setCursor(0,1);
   lcd.print("     System     ");
   delay(2000);
   lcd.clear();
   lcd.print("Circuit Digest");
   lcd.setCursor(0,1);
   lcd.print("Saddam Khan");
   delay(2000);
         digitalWrite(buzzer, HIGH);
     delay(500);
     digitalWrite(buzzer, LOW);
 for(int i=1000;i<1000+records;i++)
 {
   if(EEPROM.read(i) == 0xff)
       EEPROM.write(i,0);
  }

    finger.begin(57600);
   Serial.begin(9600);
   lcd.clear();
   lcd.print("Finding Module");
   lcd.setCursor(0,1);
   delay(1000);
   if (finger.verifyPassword())
   {
     Serial.println("Found fingerprint sensor!");
     lcd.clear();
     lcd.print("Found Module ");
     delay(1000);
   }
   else
   {
   Serial.println("Did not find fingerprint sensor :(");
   lcd.clear();
   lcd.print("module not Found");
   lcd.setCursor(0,1);
   lcd.print("Check Connections");
   while (1);
   }

     if (! rtc.begin())
      Serial.println("Couldn't find RTC");

    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

    if (! rtc.isrunning())
   {
   Serial.println("RTC is NOT running!");
   // following line sets the RTC to the date & time this sketch was compiled
      rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
   // This line sets the RTC with an explicit date & time, for example to set
   // January 21, 2014 at 3am you would call:
   // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
   }
lcd.setCursor(0,0);
lcd.print("Press Match to ");
lcd.setCursor(0,1);
lcd.print("Start System");
delay(2000);

 user1=EEPROM.read(1000);
 user2=EEPROM.read(1001);
  user3=EEPROM.read(1002);
  user4=EEPROM.read(1003);
   user5=EEPROM.read(1004);
   lcd.clear();
   digitalWrite(indFinger, HIGH);
   
}

void loop()
{
   now = rtc.now();
   lcd.setCursor(0,0);
   lcd.print("Time->");
   lcd.print(now.hour(), DEC);
   lcd.print(':');
   lcd.print(now.minute(), DEC);
   lcd.print(':');
   lcd.print(now.second(), DEC);
   lcd.print("    ");
   lcd.setCursor(0,1);
   lcd.print("Date->");
   lcd.print(now.day(), DEC);
   lcd.print('/');
   lcd.print(now.month(), DEC);
   lcd.print('/');
   lcd.print(now.year(), DEC);
   lcd.print("     ");
   delay(500);
   int result=getFingerprintIDez();
   if(result>0)
   {
             digitalWrite(indFinger, LOW);
             digitalWrite(buzzer, HIGH);
             delay(100);
             digitalWrite(buzzer, LOW);
             lcd.clear();
             lcd.print("ID:");
             lcd.print(result);
             lcd.setCursor(0,1);
             lcd.print("Please Wait....");
             delay(1000);
             attendance(result);
             lcd.clear();
             lcd.print("Attendance ");
             lcd.setCursor(0,1);
             lcd.print("Registed");
             delay(1000);
       digitalWrite(indFinger, HIGH);
       return;
}
checkKeys();
delay(300);
}

//     dmyyhms - 7 bytes
void attendance(int id)
{
 int user=0,eepLoc=0;
 if(id == 1)
 {
   eepLoc=0;
   user=user1++;
 }
 else if(id == 2)
 {
   eepLoc=210;
   user=user2++;
 }
 else if(id == 3)
 {
   eepLoc=420;
   user=user3++;
 }
 else if(id == 4)
 {
   eepLoc=630;
   user=user4++;
 }
 /*else if(id == 5)   // fifth user
 {
   eepLoc=840;
   user=user5++;
 }*/
 else
 return;
 
   int eepIndex=(user*7)+eepLoc;
   EEPROM.write(eepIndex++, now.hour());
   EEPROM.write(eepIndex++, now.minute());
   EEPROM.write(eepIndex++, now.second());
   EEPROM.write(eepIndex++, now.day());
   EEPROM.write(eepIndex++, now.month());
   EEPROM.write(eepIndex++, now.year()>>8 );
   EEPROM.write(eepIndex++, now.year());

    EEPROM.write(1000,user1);
   EEPROM.write(1001,user2);
   EEPROM.write(1002,user3);
   EEPROM.write(1003,user4);
 //  EEPROM.write(4,user5);   // figth user
}

void checkKeys()
{
  if(digitalRead(enroll) == 0)
  {
   lcd.clear();
   lcd.print("Please Wait");
   delay(1000);
   while(digitalRead(enroll) == 0);
   Enroll();
  }

   else if(digitalRead(del) == 0)
  {
   lcd.clear();
   lcd.print("Please Wait");
   delay(1000);
   delet();
  }
}

void Enroll()
{
  int count=1;
  lcd.clear();
  lcd.print("Enter Finger ID:");

   while(1)
  {
   lcd.setCursor(0,1);
    lcd.print(count);
    if(digitalRead(up) == 0)
    {
      count++;
      if(count>records)
      count=1;
      delay(500);
    }

     else if(digitalRead(down) == 0)
    {
      count--;
      if(count<1)
      count=records;
      delay(500);
    }
    else if(digitalRead(del) == 0)
    {
         id=count;
         getFingerprintEnroll();
         for(int i=0;i<records;i++)
         {
           if(EEPROM.read(i) != 0xff)
           {
             EEPROM.write(i, id);
             break;
           }
         }
         return;
    }

       else if(digitalRead(enroll) == 0)
    {
         return;
    }
}
}

void delet()
{
  int count=1;
  lcd.clear();
  lcd.print("Enter Finger ID");

   while(1)
  {
   lcd.setCursor(0,1);
    lcd.print(count);
    if(digitalRead(up) == 0)
    {
      count++;
      if(count>records)
      count=1;
      delay(500);
    }

     else if(digitalRead(down) == 0)
    {
      count--;
      if(count<1)
      count=records;
      delay(500);
    }
    else if(digitalRead(del) == 0)
    {
         id=count;
         deleteFingerprint(id);
         for(int i=0;i<records;i++)
         {
           if(EEPROM.read(i) == id)
           {
             EEPROM.write(i, 0xff);
             break;
           }
         }
         return;
    }

       else if(digitalRead(enroll) == 0)
    {
         return;
    }
}
}

uint8_t getFingerprintEnroll()
{
 int p = -1;
 lcd.clear();
 lcd.print("finger ID:");
 lcd.print(id);
 lcd.setCursor(0,1);
 lcd.print("Place Finger");
 delay(2000);
 while (p != FINGERPRINT_OK)
 {
   p = finger.getImage();
   switch (p)
   {
   case FINGERPRINT_OK:
     Serial.println("Image taken");
     lcd.clear();
     lcd.print("Image taken");
     break;
   case FINGERPRINT_NOFINGER:
     Serial.println("No Finger");
     lcd.clear();
     lcd.print("No Finger");
     break;
   case FINGERPRINT_PACKETRECIEVEERR:
     Serial.println("Communication error");
     lcd.clear();
     lcd.print("Comm Error");
     break;
   case FINGERPRINT_IMAGEFAIL:
     Serial.println("Imaging error");
     lcd.clear();
     lcd.print("Imaging Error");
     break;
   default:
     Serial.println("Unknown error");
      lcd.clear();
     lcd.print("Unknown Error");
     break;
   }
 }

  // OK success!

  p = finger.image2Tz(1);
 switch (p) {
   case FINGERPRINT_OK:
     Serial.println("Image converted");
     lcd.clear();
     lcd.print("Image converted");
     break;
   case FINGERPRINT_IMAGEMESS:
     Serial.println("Image too messy");
      lcd.clear();
      lcd.print("Image too messy");
     return p;
   case FINGERPRINT_PACKETRECIEVEERR:
     Serial.println("Communication error");
           lcd.clear();
     lcd.print("Comm Error");
     return p;
   case FINGERPRINT_FEATUREFAIL:
     Serial.println("Could not find fingerprint features");
           lcd.clear();
     lcd.print("Feature Not Found");
     return p;
   case FINGERPRINT_INVALIDIMAGE:
     Serial.println("Could not find fingerprint features");
                 lcd.clear();
     lcd.print("Feature Not Found");
     return p;
   default:
     Serial.println("Unknown error");
                 lcd.clear();
     lcd.print("Unknown Error");
     return p;
 }

  Serial.println("Remove finger");
 lcd.clear();
 lcd.print("Remove Finger");
 delay(2000);
 p = 0;
 while (p != FINGERPRINT_NOFINGER) {
   p = finger.getImage();
 }
 Serial.print("ID "); Serial.println(id);
 p = -1;
 Serial.println("Place same finger again");
  lcd.clear();
     lcd.print("Place Finger");
     lcd.setCursor(0,1);
     lcd.print("   Again");
 while (p != FINGERPRINT_OK) {
   p = finger.getImage();
   switch (p) {
   case FINGERPRINT_OK:
     Serial.println("Image taken");
     break;
   case FINGERPRINT_NOFINGER:
     Serial.print(".");
     break;
   case FINGERPRINT_PACKETRECIEVEERR:
     Serial.println("Communication error");
     break;
   case FINGERPRINT_IMAGEFAIL:
     Serial.println("Imaging error");
     break;
   default:
     Serial.println("Unknown error");
     return;
   }
 }

  // OK success!

  p = finger.image2Tz(2);
 switch (p) {
   case FINGERPRINT_OK:
     Serial.println("Image converted");
     break;
   case FINGERPRINT_IMAGEMESS:
     Serial.println("Image too messy");
     return p;
   case FINGERPRINT_PACKETRECIEVEERR:
     Serial.println("Communication error");
     return p;
   case FINGERPRINT_FEATUREFAIL:
     Serial.println("Could not find fingerprint features");
     return p;
   case FINGERPRINT_INVALIDIMAGE:
     Serial.println("Could not find fingerprint features");
     return p;
   default:
     Serial.println("Unknown error");
     return p;
 }

  // OK converted!
 Serial.print("Creating model for #");  Serial.println(id);

  p = finger.createModel();
 if (p == FINGERPRINT_OK) {
   Serial.println("Prints matched!");
 } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
   Serial.println("Communication error");
   return p;
 } else if (p == FINGERPRINT_ENROLLMISMATCH) {
   Serial.println("Fingerprints did not match");
   return p;
 } else {
   Serial.println("Unknown error");
   return p;
 }

  Serial.print("ID "); Serial.println(id);
 p = finger.storeModel(id);
 if (p == FINGERPRINT_OK) {
   Serial.println("Stored!");
   lcd.clear();
   lcd.print("Stored!");
   delay(2000);
 } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
   Serial.println("Communication error");
   return p;
 } else if (p == FINGERPRINT_BADLOCATION) {
   Serial.println("Could not store in that location");
   return p;
 } else if (p == FINGERPRINT_FLASHERR) {
   Serial.println("Error writing to flash");
   return p;
 }
 else {
   Serial.println("Unknown error");
   return p;
 }
}

int getFingerprintIDez()
{
 uint8_t p = finger.getImage();

  if (p != FINGERPRINT_OK)
 return -1;

  p = finger.image2Tz();
 if (p != FINGERPRINT_OK)
 return -1;

  p = finger.fingerFastSearch();
 if (p != FINGERPRINT_OK)
 {
  lcd.clear();
  lcd.print("Finger Not Found");
  lcd.setCursor(0,1);
  lcd.print("Try Later");
  delay(2000);
 return -1;
 }
 // found a match!
 Serial.print("Found ID #");
 Serial.print(finger.fingerID);
 return finger.fingerID;
}

uint8_t deleteFingerprint(uint8_t id)
{
 uint8_t p = -1;
 lcd.clear();
 lcd.print("Please wait");
 p = finger.deleteModel(id);
 if (p == FINGERPRINT_OK)
 {
   Serial.println("Deleted!");
   lcd.clear();
   lcd.print("Figer Deleted");
   lcd.setCursor(0,1);
   lcd.print("Successfully");
   delay(1000);
 }

  else
 {
   Serial.print("Something Wrong");
   lcd.clear();
   lcd.print("Something Wrong");
   lcd.setCursor(0,1);
   lcd.print("Try Again Later");
   delay(2000);
   return p;
 }
}

void download(int eepIndex)
{
           
           if(EEPROM.read(eepIndex) != 0xff)
           {
             Serial.print("T->");
             if(EEPROM.read(eepIndex)<10)
             Serial.print('0');
             Serial.print(EEPROM.read(eepIndex++));
             Serial.print(':');  
             if(EEPROM.read(eepIndex)<10)
             Serial.print('0');
             Serial.print(EEPROM.read(eepIndex++));
             Serial.print(':');
             if(EEPROM.read(eepIndex)<10)
             Serial.print('0');
             Serial.print(EEPROM.read(eepIndex++));
             Serial.print("   D->");
             if(EEPROM.read(eepIndex)<10)
             Serial.print('0');
             Serial.print(EEPROM.read(eepIndex++));
             Serial.print('/');
             if(EEPROM.read(eepIndex)<10)
             Serial.print('0');          
             Serial.print(EEPROM.read(eepIndex++));
             Serial.print('/');            
             Serial.print(EEPROM.read(eepIndex++)<<8 | EEPROM.read(eepIndex++));
           }
           else
           {
              Serial.print("---------------------------");
           }

            Serial.print("         ");
}

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