Friday 2 March 2018

Fingerprint sensor scanner with Arduino

Fingerprint sensor scanner with Arduino
If you want to add biometric security features to your Arduino projects, an easy way to do so, is to add a fingerprint sensor module to it. In this video we demonstrate how easy to use a fingerprint sensor with an Arduino Nano and a small display.


Required Components :-
  1. Arduino Uno
  2. 16x2 LCD
  3. fingerprint sensor
  4. 10k potentionmeter
  5. 220ohms resistor = 3pcs
  6. red LED
  7. green LED
  8. jumper wires
  9. breadboard

Circuit  Diagram :




Load the Fingerprint Sketch With LCD Sketch


Next step


Source Code:

how To download and Use Arduino Uno Software under Windows



/********************** ARDUINO FINGERPRINT SCANNER with 16x2 LCD monitor***************/
#include
#include
#include
#include
int getFingerprintIDez();
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
SoftwareSerial mySerial(2, 3);
LiquidCrystal lcd(9, 8, 7, 6, 5, 4); // initialize the library with the numbers of the interface pins
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
void setup()
{ Serial.begin(9600); // initialize the serial communications:
lcd.begin(16,2); lcd.setCursor(0,0); lcd.print("Scan your finger");
pinMode(13,OUTPUT);
pinMode(12,OUTPUT);
pinMode(11, OUTPUT);
pinMode(A0, INPUT);
finger.begin(57600); // set the data rate for the sensor serial port }
void loop() // run over and over again
{
getFingerprintID();
delay(100);
digitalWrite (13,HIGH);
}
uint8_t getFingerprintID()
{ uint8_t p = finger.getImage();
switch (p)
{
case FINGERPRINT_OK:
lcd.clear();
lcd.print(" Image taken... ");
delay(1000);
break;
case FINGERPRINT_NOFINGER:
return p;
case FINGERPRINT_PACKETRECIEVEERR:
return p;
case FINGERPRINT_IMAGEFAIL:
return p;
default:
return p; }
// OK success!
p = finger.image2Tz();
switch (p) {
case FINGERPRINT_OK:
break;
case FINGERPRINT_IMAGEMESS:
return p;
case FINGERPRINT_PACKETRECIEVEERR:
return p;
case FINGERPRINT_FEATUREFAIL:
return p;
case FINGERPRINT_INVALIDIMAGE:
return p;
default:
return p; }
// OK converted!
p = finger.fingerFastSearch();
if (p == FINGERPRINT_OK)
{
lcd.clear();
lcd.print(" Found match! ");
digitalWrite(11, HIGH);
delay(1000);
digitalWrite(11,LOW); // turn on green LED to indicate match
}
else if(p == FINGERPRINT_NOTFOUND)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print(" Did not match! ");
delay(1000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print(" scan finger! ");
return p;
}
else
{ return p; }
// IF FOUND A MATCH............
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Found ID #");
lcd.print(finger.fingerID);
lcd.setCursor(0,1);
lcd.print("confidence ");
lcd.print(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;
// found a match!
digitalWrite(13, LOW);
delay(10);
digitalWrite(13, HIGH);
delay(10);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Found ID # ");
lcd.print(finger.fingerID);
lcd.setCursor(0, 1);
lcd.print("confidence ");
lcd.print(finger.confidence);
return finger.fingerID;
}

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