Arduino Fingerprint Sensor Door Lock

SOURCE CODE:

/*************************************************** This is an example sketch for our optical Fingerprint sensor

Designed specifically to work with the Adafruit BMP085 Breakout ----> http://www.adafruit.com/products/751

These displays use TTL Serial to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!

Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/

#include <Adafruit_Fingerprint.h> #include <SoftwareSerial.h> #include <Servo.h> //Add servo library

int getFingerprintIDez();

Servo servo1; //Define servo name / object

#define servoPin 9 //Define pin number to which servo motor is connected #define durationTime 3000 //Define the time it remains in the open position of the door lock (miliseconds) #define servoMin 0 //Open position #define servoMax 90 // Closed position

SoftwareSerial mySerial(2, 3); Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

void setup() { while (!Serial); // For Yun/Leo/Micro/Zero/... Serial.begin(9600); Serial.println("Adafruit finger detect test");

servo1.attach(servoPin); //Define pin number of the servo servo1.write(servoMax); //The position of the servo at the start of the program

// 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); } Serial.println("Waiting for valid finger..."); }

void loop() // run over and over again { getFingerprintIDez(); delay(50); //don't ned to run this at full speed. }

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! Serial.print("Found ID #"); Serial.print(finger.fingerID); Serial.print(" with confidence of "); Serial.println(finger.confidence); }

// 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;

servo1.write(servoMin); //If the fingerprint is correct open the door lock delay(durationTime); //Keep the lock open for the defined duration servo1.write(servoMax); //take the lock OFF again // found a match! Serial.print("Found ID #"); Serial.print(finger.fingerID); Serial.print(" with confidence of "); Serial.println(finger.confidence); return finger.fingerID; }