Arduino & Fingerprint Sensor Based Biometric Security System

Introduction

In this project we will be Interfacing Fingerprint Sensor with Arduino for Biometric Security System. The type of fingerprint module we are using is R305 Fingerprint Scanner Module. Security is a major concern in our day to day life, and digital locks have become an important part of these security systems. Fingerprint sensor-based is one of the safest door locking system as it has the ability to identify and distinguish every person individually without making any error. Also, the module is very small that it can be kept anywhere and with the portability feature and less power consumption you can carry it to any place as well.

Circuit Diagram :-

Code :-

//Prateek //www.prateeks.in #include<LiquidCrystal.h> LiquidCrystal lcd(12,11,10,9,8,7); #include <SoftwareSerial.h> SoftwareSerial fingerPrint(4, 3); #include<Servo.h> Servo myServo; #include <Adafruit_Fingerprint.h> uint8_t id; Adafruit_Fingerprint finger = Adafruit_Fingerprint(&fingerPrint); #define enroll A0 #define del A1 #define up A2 #define down A3 #define openLight A5 #define closeLight A6 #define servoPin 2 void setup() { delay(1000); myServo.attach(servoPin); myServo.write(180); pinMode(enroll, INPUT_PULLUP); pinMode(up, INPUT_PULLUP); pinMode(down, INPUT_PULLUP); pinMode(del, INPUT_PULLUP); pinMode(openLight, OUTPUT); pinMode(closeLight, OUTPUT); lcd.begin(16,2); lcd.print(" Biometric "); lcd.setCursor(0,1); lcd.print("Security System"); delay(2000); lcd.clear(); finger.begin(57600); Serial.begin(9600); lcd.clear(); lcd.print(" Finding Module "); lcd.setCursor(0,1); delay(2000); if (finger.verifyPassword()) { Serial.println("Found fingerprint sensor!"); lcd.clear(); lcd.print(" Module Found "); delay(2000); } 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); } } void loop() { lcd.setCursor(0,0); lcd.print(" Press Match "); lcd.setCursor(0,1); lcd.print("To Start System"); digitalWrite(closeLight, HIGH); if(digitalRead(up)==0 || digitalRead(down)==0) { for(int i=0;i<5;i++) { lcd.clear(); lcd.print("Place Finger"); delay(2000); int result=getFingerprintIDez(); if(result>=0) { digitalWrite(openLight, HIGH); digitalWrite(closeLight, LOW); lcd.clear(); lcd.print(" Allowed "); lcd.setCursor(0,1); lcd.print(" Gate Opened "); myServo.write(0); delay(5000); myServo.write(180); digitalWrite(closeLight, HIGH); digitalWrite(openLight, LOW); lcd.setCursor(0,1); lcd.print(" Gate Closed "); return; } } } checkKeys(); delay(2000); } void checkKeys() { if(digitalRead(enroll) == 0) { lcd.clear(); lcd.print("Please Wait"); delay(2000); while(digitalRead(enroll) == 0); Enroll(); } else if(digitalRead(del) == 0) { lcd.clear(); lcd.print("Please Wait"); delay(2000); delet(); } } void Enroll() { int count=0; lcd.clear(); lcd.print("Enroll Finger "); lcd.setCursor(0,1); lcd.print("Location:"); while(1) { lcd.setCursor(9,1); lcd.print(count); if(digitalRead(up) == 0) { count++; if(count>25) count=0; delay(500); } else if(digitalRead(down) == 0) { count--; if(count<0) count=25; delay(500); } else if(digitalRead(del) == 0) { id=count; getFingerprintEnroll(); return; } else if(digitalRead(enroll) == 0) { return; } } } void delet() { int count=0; lcd.clear(); lcd.print("Delete Finger "); lcd.setCursor(0,1); lcd.print("Location:"); while(1) { lcd.setCursor(9,1); lcd.print(count); if(digitalRead(up) == 0) { count++; if(count>25) count=0; delay(500); } else if(digitalRead(down) == 0) { count--; if(count<0) count=25; delay(500); } else if(digitalRead(del) == 0) { id=count; deleteFingerprint(id); 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(2000); } else { Serial.print("Something Wrong"); lcd.clear(); lcd.print("Something Wrong"); lcd.setCursor(0,1); lcd.print("Try Again Later"); delay(2000); return p; } }