Fingerprint Attendance System using Arduino

The project posted here is a simple Fingerprint Attendance System using Arduino and can be very useful for any place where attendance is taken for maintaining registers like offices, schools, etc. Previously, we had posted RFID based attendance system, Arduino Fingerprint Sensor Lock, etc.

The project posted here utilizes a thumb impression for taking attendance. The Fingerprint Attendance System using Arduino is based on a simple algorithm called matching algorithm and is compared with previously stored templates of fingerprints against the user’s fingerprint for authentication.

Maintaining a register for attendance is normally used for a traditional attendance system, but it is much more tedious. In this attendance system, the user places a finger on the sensor, the attendance is taken and the message is displayed on LCD along with the person’s name.

Circuit description of Fingerprint Attendance System using Arduino

The circuit shown in Figure 1 utilizes a 5V power supply which can be taken out from the Arduino board. The brain or processing component of the project Fingerprint Attendance System using Arduino is an Arduino board. As we all know, the Arduino board is based on an ATmega328/ATmega328P microcontroller. It is equipped with 14 digital Input or output pins multiplexed together, 6 analog inputs with inbuilt 32k flash memory. It also has a 16MHz crystal oscillator, a USB connection power jack, an ICSP header, and a reset button. Arduino uno board can be programmed using Arduino IDE software.

Fingerprint Sensor Module | Fingerprint Attendance System using Arduino

Fingerprint sensor module R305 (connected across CON1) has a UART interface with a direct connection with the Arduino UNO board. The user can store fingerprint samples in the module which can be configured in 1:1 or 1:N mode for identification for the right user.

The fingerprint sensor module R305 is powered with a +5V power supply which is connected to a 5V pin of Arduino board. Tx and Rx pin of the fingerprint sensor module is connected to Arduino digital pins 2 and 3 as shown in the circuit diagram. This connection is used for serial communication because only one individual pin is used for the transmitter and receiver thus parallel communication is not possible.

LCD Module | Fingerprint Attendance System using Arduino

A 16×2 alphanumeric LCD is used to display messages during operations like name, authentication, etc. The higher-order data pin of the LCD (pin 11, 12, 13, and 14) are connected to digital pins 8, 9, 10, and 11 of the Arduino uno board. The RS and E pin of LCD is connected to pins 12 and 13 of the Arduino uno board. RW pin of LCD is grounded because we only perform write operation in LCD. Preset VR₁ is used to adjust the contrast of LCD. Pin no 15 and 16 of LCD not shown in the circuit diagram is used to glow backlight LED.

RTC Module | Fingerprint Attendance System using Arduino

The circuit Fingerprint Attendance System using Arduino also utilizes an RTC (Real Time Clock) module for storing the date and time of attendance. In this project, we used DS1307 RTC, which is a serial real-time clock IC with inbuilt various types of functions like calendar, 24-hour, and 12-hour time format with AM and PM indication. Two-line SDA and SCL of the DS1307 module are connected to analog pins A4 and A5 of the Arduino uno board as shown in Figure 1. The module has an inbuilt 3V button cell which helps the RTC module to run internally for a few days (approx. 10 days) even if the external power supply is not connected.

The four switches SW₁ to SW₄ are connected to four analog pins A0 to A3 of Arduino uno board respectively. Switch SW₁ and SW₂ are multiplexed i.e. various operation is performed by a single switch. The table shown below explains the operation of switches used in the circuit diagram.

Table 1: Operation of Switch
S.N.	Switch	Operations
1.	SW₁	ENROLL/BACK/DOWNLOAD
2.	SW2	DELETE/OK/RESET
3.	SW3	UP
4.	SW4	DOWN

To Enroll new users.

Power on the circuit.
Press the Enroll switch (SW₁), and follow the message displayed on the LCD.
Users input the ID by using the Up and Down switch (SW₃ and SW₃).
Press the OK switch (SW₂)
A message on the LCD screen is displayed and asks the user to put a finger on the fingerprint module. And follow the message as shown in LDC i.e. remove the finger and again put finger on the module.
The system stores the fingerprint image in memory i.e. the user is registered and can take attendance.

To Delete Existing User

Press the DELETE switch (SW₂).
LCD asks for the user ID to delete.
User ID is selected by sculling UP and DOWN using switches SW₃ and SW₄.
If ID is selected press the OK switch (SW₂).
A confirmation message is displayed on the LCD.

Glowing LED₁ is used to indicate whether the system is ready or not whereas the piezo buzzer is used for the sound alert.

Software: Software of Fingerprint Attendance System Arduino is written in Arduino Programming language and is compiled using Arduino IDE. You can directly download the software code from the link given below.

#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  // replace number (4) with number of user in system
//put 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("Waiting...");
      lcd.setCursor(0,1);
      lcd.print("Data Downloading");
      Serial.println("Waiting...");
      Serial.println("Data Downloading");
      Serial.println();
      Serial.print("S.N.         ");
      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);
        //if 5th uer is added
      //  eepIndex=(i*7)+840;
      //  download(eepIndex);
        Serial.println();
      }
    }
    if(digitalRead(del) == 0)
    {
      lcd.clear();
      lcd.print("Waiting...");
      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("Best Eng Project");
    lcd.setCursor(0,1);
    lcd.print("Krishna Keshav");
    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("Module Found");
      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("Waiting...");
              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)   // if 5th user is used
  {
    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("Waiting...");
    delay(1000);
    while(digitalRead(enroll) == 0);
    Enroll();
   }
   else if(digitalRead(del) == 0)
   {
    lcd.clear();
    lcd.print("Waiting...");
    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;
     }
 }
}
//Function To delete Existing User
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;
     }
 }
}
//Funbction to convert finger print image to templete
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;
  }
}
//Function to compare finger print image with stored IDs for matching
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;
  }
}
//Function for Download the Data fro EEPROM to 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++));
              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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#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 // replace number (4) with number of user in system

//put 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("Waiting...");

lcd.setCursor(0,1);

lcd.print("Data Downloading");

Serial.println("Waiting...");

Serial.println("Data Downloading");

Serial.println();

Serial.print("S.N. ");

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);

//if 5th uer is added

// eepIndex=(i*7)+840;

// download(eepIndex);

Serial.println();

}

if(digitalRead(del) == 0)

{

lcd.clear();

lcd.print("Waiting...");

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("Best Eng Project");

lcd.setCursor(0,1);

lcd.print("Krishna Keshav");

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("Module Found");

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("Waiting...");

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) // if 5th user is used

{

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("Waiting...");

delay(1000);

while(digitalRead(enroll) == 0);

Enroll();

}

else if(digitalRead(del) == 0)

{

lcd.clear();

lcd.print("Waiting...");

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;

}

//Function To delete Existing User

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;

}

//Funbction to convert finger print image to templete

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;

}

//Function to compare finger print image with stored IDs for matching

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;

}

//Function for Download the Data fro EEPROM to 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++));

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(" ");

}

CLICK HERE TO DOWNLOAD THE SOFTWARE CODE

Click Here to Download the Library File

PARTS LIST OF FINGERPRINT ATTENDANCE SYSTEM USING ARDUINO

R₁ = 1 KΩ, Resistor

VR₁ = 10 KΩ, Preset

ARD₁ = Arduino UNO Board

RTC Module = DS1307

Fingerprint Sensor Module = R305

LCD₁ = 16×2 LCD

SW₁ – SW₄ = Push-to-on Switch

LED₁ = 5mm any color LED

BUZ₁ = Piezo Buzzer

3 Thoughts to “Fingerprint Attendance System using Arduino”

SHAHAD K

February 24, 2023 at 8:37 pm

how to download data from arduino??

1. Engineeering Projects
  
  February 25, 2023 at 2:22 pm
  
  you cannot download the data from Arduino, in that case you have to add SD card for data log and download.
  
J.mounika

September 25, 2024 at 7:13 pm

Instead of Arduino what can we use ?

Circuit description of Fingerprint Attendance System using Arduino

Fingerprint Sensor Module | Fingerprint Attendance System using Arduino

LCD Module | Fingerprint Attendance System using Arduino

RTC Module | Fingerprint Attendance System using Arduino

To Enroll new users.

To Delete Existing User

Click Here to Download the Library File

PARTS LIST OF FINGERPRINT ATTENDANCE SYSTEM USING ARDUINO

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3 Thoughts to “Fingerprint Attendance System using Arduino”

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