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ESP32 And Fingerprint Sensor Based Biometric Door Lock Security System
Just Do Electronics
April 14, 2020
Circuit Diagram :-
Code :-
//Prateek //www.prateeks.in #include
//https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Library #include
#include
//https://github.com/adafruit/Adafruit-GFX-Library #include
//https://github.com/adafruit/Adafruit_SSD1306 #include
#include
#define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_HEIGHT 64 // OLED display height, in pixels // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) #define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); // Icon of Fingerprint #define LOGO_HEIGHT 64 #define LOGO_WIDTH 128 static const unsigned char PROGMEM logo_bmp[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0x83, 0xff, 0xc0, 0x00, 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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x1f, 0x1e, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x3e, 0x0f, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x0f, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial2); int relayPin = 15; int buzzerPin = 23; void setup() { pinMode(relayPin, OUTPUT); pinMode(buzzerPin, OUTPUT); digitalWrite(relayPin, LOW); digitalWrite(buzzerPin, LOW); Serial.begin(57600); Serial2.begin(115200); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); // Don't proceed, loop forever } while (!Serial); delay(100); display.clearDisplay(); display.drawBitmap(0, 0, logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1); display.display(); Serial.println("Fingerprint Door Lock"); delay(3000); display.clearDisplay(); // set the data rate for the sensor serial port finger.begin(57600); if (finger.verifyPassword()) { Serial.println("Fingerprint Sensor Connected"); display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(25, 0); // Start at top-left corner display.println(("Sensor")); display.setCursor(5, 35); display.println("Connected"); display.display(); delay(3000); // display.clearDisplay(); } else { display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(25, 0); // Start at top-left corner display.println(("Sensor")); display.setCursor(5, 35); display.println("Not Found"); display.display(); Serial.println("Unable to find Sensor"); delay(3000); Serial.println("Check Connections"); while (1) { delay(1); } } display.clearDisplay(); } 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) { display.clearDisplay(); display.drawBitmap(0, 0, logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1); display.display(); Serial.println("Waiting For Valid Finger"); return -1; } p = finger.image2Tz(); if (p != FINGERPRINT_OK) { display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(0, 0); // Start at top-left corner display.println(("Prateek Image")); display.setCursor(0, 35); display.println("Try Again"); display.display(); Serial.println("Prateek Image Try Again"); delay(3000); display.clearDisplay(); return -1; } p = finger.fingerFastSearch(); if (p != FINGERPRINT_OK) { display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(20, 0); // Start at top-left corner display.println(("Invalid")); display.setCursor(25, 20); display.println("Finger"); display.setCursor(10, 40); display.println("Try Again"); display.display(); Serial.println("Not Valid Finger"); delay(3000); display.clearDisplay(); return -1; } // found a match! display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(40, 0); // Start at top-left corner display.println(("Door")); display.setCursor(15, 20); // Start at top-left corner display.println(("Unlocked")); display.setCursor(20, 40); display.println("Welcome"); display.display(); digitalWrite(relayPin, HIGH); digitalWrite(buzzerPin, HIGH); delay(6000); display.clearDisplay(); display.setTextSize(2); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(20, 10); // Start at top-left corner display.println(("Closing")); display.setCursor(20, 30); // Start at top-left corner display.println(("the Door")); display.display(); digitalWrite(relayPin, LOW); digitalWrite(buzzerPin, LOW); delay(3000); display.clearDisplay(); Serial.println("Door Unlocked Welcome"); return finger.fingerID; }
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