Make Fingerprint Door Lock | Arduino Project

How to Make Fingerprint Door Lock | Arduino Project

CirCuit Diagram :-

Finger Reader Sensor

Code :-

//Prateek Singh //www.prateeks.in #include <Adafruit_Fingerprint.h> #include <LiquidCrystal_I2C.h> #include <SPI.h> #include <SoftwareSerial.h> SoftwareSerial mySerial(2, 3); //Serial Communications //Created instances LiquidCrystal_I2C lcd(0x27, 16, 2); Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial); int relayPin = 9; void setup() { pinMode(relayPin, OUTPUT); digitalWrite(relayPin, LOW); Serial.begin(9600); while (!Serial); delay(100); lcd.begin(); lcd.setCursor(0, 0); lcd.print("Fingerprint Door"); lcd.setCursor(0, 1); lcd.print("lock by prateek"); delay(3000); lcd.clear(); // set the data rate for the sensor serial port finger.begin(57600); if (finger.verifyPassword()) { lcd.setCursor(0, 0); lcd.print(" FingerPrint "); lcd.setCursor(0, 1); lcd.print("Sensor Connected"); } else { lcd.setCursor(0, 0); lcd.print("Unable to found"); lcd.setCursor(0, 1); lcd.print("Sensor"); delay(3000); lcd.clear(); lcd.setCursor(0, 0); lcd.print("Check Connections"); while (1) { delay(1); } } lcd.clear(); } void loop() // run over and over again { getFingerprintIDez(); delay(50); //don't need to run this at full speed. } // returns -1 if failed, otherwise returns ID # int getFingerprintIDez() { uint8_t p = finger.getImage(); if (p != FINGERPRINT_OK) { lcd.setCursor(0, 0); lcd.print(" Waiting For"); lcd.setCursor(0, 1); lcd.print(" Valid Finger"); return -1; } p = finger.image2Tz(); if (p != FINGERPRINT_OK) { lcd.clear(); lcd.setCursor(0, 0); lcd.print(" Messy Image"); lcd.setCursor(0, 1); lcd.print(" Try Again"); delay(3000); lcd.clear(); return -1; } p = finger.fingerFastSearch(); if (p != FINGERPRINT_OK) { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Not Valid Finger"); delay(3000); lcd.clear(); return -1; } // found a match! lcd.clear(); lcd.setCursor(0, 0); lcd.print(" Door Unlocked"); lcd.setCursor(0, 1); lcd.print(" Welcome"); digitalWrite(relayPin, HIGH); delay(3000); digitalWrite(relayPin, LOW); lcd.clear(); return finger.fingerID; }