Project description

More info and update in $ https://rogerbit.com/wprb/2023/08/inicio-seccion-fingerprint/ $ 

Fingerprint Module and Arduino Login is a biometric authentication system that uses fingerprint recognition technology to allow access to a system or device. This system combines the module's fingerprint detection and reading capabilities with the programming and control provided by an Arduino board.

Here is an overview of how this system works:

Key components:

Fingerprint module: A sensor that captures the fingerprint image and converts it into a unique digital representation.

Arduino: A programmable microcontroller board that acts as the brain of the system, controlling communication with the fingerprint module and making decisions based on the captured data.

Fingerprint registration:

To use the system, users must register their fingerprints in the Arduino database. This involves scanning the fingerprint multiple times to capture multiple angles and details.

The fingerprint module processes the information and stores it in a unique digital form called a “template.”

Authentication process:

When a user wants to log in, they place their finger on the fingerprint module.

The module scans the fingerprint and compares it with templates stored in the Arduino database.

If there is a close match, the Arduino authorizes access and allows the user to enter the system or device.

Implementation:

Programming is essential for this system. Code is required for communication between the fingerprint module and the Arduino, as well as for managing stored fingerprint templates.

Scheduling also addresses situations such as managing multiple users and handling errors such as incorrect matches or unauthorized attempts.

Advantages:

Fingerprint-based authentication is more secure than traditional passwords because fingerprints are unique and difficult to forge.

It is convenient for users as it eliminates the need to remember passwords.

It can be applied in a variety of scenarios, such as mobile device access, security systems, and more.

Considerations:

The accuracy and reliability of the fingerprint module are crucial to avoid false alarms or access denials.

Measures should be taken to protect stored fingerprint templates as they represent sensitive biometric information.

Login with fingerprint module and Arduino is an example of how biometric technology can improve security and user experience in authentication systems.

Electronic components

Arduino micro 

Seventeen pushbuttons

micro usb cable

PCB

Download gerber file –> https://rogerbit.com/wprb/wp-content/uploads/2022/03/teclado-arduino-micro.zip

Optional components

Buzzer 

female pins

Open Smart fingerprint module

Download Manual –> https://rogerbit.com/wprb/wp-content/uploads/2022/06/R308-fingerprint-module-user-manual_English.pdf

Circuit 

Code

#include <Keyboard.h> #include <Adafruit_Fingerprint.h> #include <SoftwareSerial.h> int getFingerprintIDez(); int lecturaSet1; int lecturaSet2; int set1 = 2;//Pin 2 del arduino donde está conectado el pulsador 1 int set2 = 3;//Pin 3 del arduino donde está conectado el pulsador 2 int buzzer = 13; SoftwareSerial mySerial(8, 9);//Pines para el control del sensor de huella Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial); void setup()  { pinMode(buzzer, OUTPUT); pinMode(set1, INPUT_PULLUP); pinMode(set2, INPUT_PULLUP); Serial.begin(9600);//Velocidad del puerto serial pin 0 y 1 Serial.println("Prueba de detección de fingerprint"); finger.begin(57600); // Velocidad del puerto serial por software pin 8 y 9  if (finger.verifyPassword()) {  Serial.println("¡Sensor de huellas dactilares encontrado!"); } else {  Serial.println("Sensor de huellas dactilares no encontrado:(");  while (1); } Serial.println("Esperando una huella válida..."); } void loop()   { getFingerprintIDez(); delay(500);      //Retardo entre lectura de una huella y otra . lecturaSet1 = digitalRead(set1); lecturaSet2 = digitalRead(set2); if(lecturaSet1 == LOW){  Keyboard.print("password");//Contraseña  Keyboard.press(KEY_RETURN);//Enter   Keyboard.releaseAll();  bip();   }  if(lecturaSet2 == LOW){  Keyboard.print("password");//Contraseña  Keyboard.press(KEY_RETURN);//Enter   Keyboard.releaseAll();  bip();   } } // devuelve -1 si falla, de lo contrario devuelve el ID # de la huella 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;  // Se encontró una coincidencia! Serial.print("Huella ID #"); Serial.print(finger.fingerID);  Serial.print(" con confianza de "); Serial.println(finger.confidence); bip(); if(finger.fingerID == 1){  Keyboard.print("password");  Keyboard.press(KEY_RETURN);  Keyboard.releaseAll();  } if(finger.fingerID == 2){  Keyboard.print("usuario");//Usurio  Keyboard.press(KEY_TAB);//Tabulador  Keyboard.print("password");//Contraseña  Keyboard.press(KEY_RETURN);//Enter  Keyboard.releaseAll();  }  if(finger.fingerID == 3){  Keyboard.print("password");  Keyboard.press(KEY_RETURN);  Keyboard.releaseAll();  } if(finger.fingerID == 4){  Keyboard.print("prueba 4");  } if(finger.fingerID == 5){  Keyboard.print("prueba 5");  }   return finger.fingerID;   } void bip (){ digitalWrite(buzzer, HIGH); delay(100); digitalWrite(buzzer, LOW); }