Published July 31, 2017 © GPL3+

Biometric-Based Student Attendance System

This is a fun an easy DIY project that enables you automatically capture students attendance bio-metrically via fingerprint.

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Biometric-Based Student Attendance System

Things used in this project

Hardware components

Jumper wires (generic)

Adafruit fingerprint module

PHPoC Bread Board

MIcro SD card Module

LED (generic)

Resistor 10k ohm

Adafruit Standard LCD - 16x2 White on Blue

Story

Introduction

This is a fun an easy DIY project that enables you automatically capture students attendance bio-metrically via fingerprint. This project has so many useful applications ranging from attendance monitoring to access control, and ultimately security.

Implementation

General user procedures

Fingerprint enrollment phase

Attendance taking phase

Data logging phase

Fingerprint enrollment phase

Generally, this can be broken down into two stages. First stage is registration phase and the next is enrollment phase. In this process vital details like names and employee numbers into database using Arduino serial monitor as a means of inputting these details into the database.

Secondly, student will enroll their fingerprint via the fingerprint sensor, here the fingerprint sensor detects and captures the fingerprint image and extracts the unique minutiae data. Student/employees are then required to scan again their fingerprint and the extracted features are compared with the one taken in previous session. If the system found the fingerprints are matched, the unique minutiae data is saved into the database as template.

Attendance taking phase

This is the second stage called the attendance taking phase or authentication phase. During authentication, the bio-metric of student is captured during lecture session. The captured image is compared with that stored in the database using a matching algorithm:

Data logging phase

During the enrollment phase a unique identification number is issued to the students this ID number is very important because during the data logging phase this unique identification number is logged into an SD card in a ".txt" format this file is imported into excel and a simple matching algorithm is developed to match this ID numbers to the names as seen above.

Code

Interfacing the SD-card, Arduino and Fingerprint Sensor

Codes to enrol finger
#include <Adafruit_Fingerprint.h>
#include <SoftwareSerial.h>
uint8_t getFingerprintEnroll(uint8_t id);
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino  (WHITE wire)
SoftwareSerial mySerial(2, 3);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
void setup()  
{
  Serial.begin(9600);
  Serial.println("fingertest");
  // set the data rate for the sensor serial port
  finger.begin(57600);
  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1);
  }
}
void loop()                     // run over and over again
{ Serial.println("Type in the ID # you want to save this finger as...");
  uint8_t id = 0;
  while (true) {
    while (! Serial.available());
    char c = Serial.read();
    if (! isdigit(c)) break;
    id *= 10;
    id += c - '0';
  }
  Serial.print("Enrolling ID #");
  Serial.println(id); 
  while (!  getFingerprintEnroll(id) );
}
uint8_t getFingerprintEnroll(uint8_t id) {
  uint8_t p = -1;
  Serial.println("Waiting for valid finger to enroll");
  while (p != FINGERPRINT_OK) {
    p = finger.getImage();
    switch (p) {
    case FINGERPRINT_OK:
      Serial.println("Image taken");
      break;
    case FINGERPRINT_NOFINGER:
      Serial.println(".");
      break;
    case FINGERPRINT_PACKETRECIEVEERR:
      Serial.println("Communication error");
      break;
    case FINGERPRINT_IMAGEFAIL:
      Serial.println("Imaging error");
      break;
    default:
      Serial.println("Unknown error");
      break;
    }
  }
  // OK success!
  p = finger.image2Tz(1);
  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;
  }
  Serial.println("Remove finger");
  delay(2000);
  p = 0;
  while (p != FINGERPRINT_NOFINGER) {
    p = finger.getImage();
  }p = -1;
  Serial.println("Place same finger 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");
      break;
    }
  }
  // OK success!
 = 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!
  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;
  }   
    p = finger.storeModel(id);
  if (p == FINGERPRINT_OK) {
    Serial.println("Stored!");
  } 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;
  }   
}
Codes to take fingerprint and log data
#include <Adafruit_Fingerprint.h>
#include <SoftwareSerial.h>
#include <SD.h>
int getFingerprintIDez();
File myFile;
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino  (WHITE wire)
SoftwareSerial mySerial(2, 3);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
void setup()  
{    Serial.begin(9600);
  Serial.println("fingertest");
  // set the data rate for the sensor serial port
  finger.begin(57600);
    if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1);
  }
  delay(5000);
  Serial.println("Waiting for valid finger...");
  Serial.print("Initializing SD card...");
  pinMode(10, OUTPUT);
   if (!SD.begin(4)) {
    Serial.println("initialization failed!");
    return;
  }Serial.println("initialization done.");
  delay(3000);
}void loop()                     // run over and over again{
  getFingerprintIDez();
}uint8_t getFingerprintID() {
  uint8_t p = finger.getImage();
  switch (p) {
    case FINGERPRINT_OK:
      Serial.println("Image taken");
      break;
    case FINGERPRINT_NOFINGER:
      Serial.println("No finger detected");
      return p;
    case FINGERPRINT_PACKETRECIEVEERR:
      Serial.println("Communication error");
      return p;
    case FINGERPRINT_IMAGEFAIL:
      Serial.println("Imaging error");
      return p;
    default:
      Serial.println("Unknown error");
      return p;
  }// OK success!
  p = finger.image2Tz();
  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!
  p = finger.fingerFastSearch();
  if (p == FINGERPRINT_OK) {
    Serial.println("Found a print match!");
  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
    Serial.println("Communication error");
    return p;
  } else if (p == FINGERPRINT_NOTFOUND) {
    Serial.println("Did not find a match");
    return p;
  } else {
    Serial.println("Unknown error");
    return p;
  }   
  /*
  // found a match!
  String toLog="";
  Serial.print("Found ID #"); Serial.print(finger.fingerID); 
  toLog+=finger.fingerID;
  Serial.print(" with confidence of "); Serial.println(finger.confidence);
  toLog+=finger.confidence;
  myFile=SD.open("storage.txt",FILE_WRITE);
  if(myFile)
  {
    myFile.println(toLog);
    myFile.close();
  }
  */
}// returns -1 if failed, otherwise returns ID #
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)  return -1;
  // found a match!
  Serial.print("Found ID #"); Serial.print(finger.fingerID); 
  Serial.print(" with confidence of "); Serial.println(finger.confidence);
  int toLog = finger.fingerID;
  delay(500);
  Serial.println("logging...");
  logData(toLog);
  return finger.fingerID; 
}
void logData(int d)
{
  myFile=SD.open("storage.txt",FILE_WRITE);
  if(myFile)
  {
    myFile.println(d);
    Serial.println("data logged");
    myFile.close();
  }
  else{
        Serial.println("error logging data");
  }
}

Credits

Emmanuel

1 project • 11 followers

Biometric-Based Student Attendance System

Things used in this project

Hardware components

Story

Introduction

Implementation

Fingerprint enrollment phase

Attendance taking phase

Data logging phase

Schematics

Shematic diagram

Code

Interfacing the SD-card, Arduino and Fingerprint Sensor

Fingerprint Sensor

Credits

Emmanuel

Comments

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Biometric-Based Student Attendance System

Biometric-Based Student Attendance System

Things used in this project

Hardware components

Story

Introduction

Implementation

Fingerprint enrollment phase

Attendance taking phase

Data logging phase

Schematics

Shematic diagram

Code

Interfacing the SD-card, Arduino and Fingerprint Sensor

Fingerprint Sensor

Credits

Emmanuel

Comments

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