Скачать или смотреть biometric look shorts ardunio python

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creating a biometric lock system using arduino and python can be an exciting project. in this tutorial, we'll use a fingerprint sensor to create a secure locking mechanism. the system will use an arduino for hardware control and a python script for managing fingerprints and unlocking the system.

components needed

1. *arduino board* (e.g., arduino uno)
2. *fingerprint sensor module* (e.g., r305 or gt-521f52)
3. *servo motor* (for locking mechanism)
4. *breadboard and jumper wires*
5. *power supply* (if necessary)
6. *computer with python installed*

step 1: wiring the components

*fingerprint sensor wiring:*
vcc - 5v on arduino
gnd - gnd on arduino
tx - digital pin 2 on arduino
rx - digital pin 3 on arduino

*servo motor wiring:*
signal pin - digital pin 9 on arduino
vcc - 5v on arduino
gnd - gnd on arduino

step 2: arduino code

first, let's upload the arduino code that will handle the fingerprint input and control the servo motor.

arduino code

```cpp
include servo.h
include adafruit_fingerprint.h
include softwareserial.h

softwareserial myserial(2, 3); // rx, tx
adafruit_fingerprint finger = adafruit_fingerprint(&myserial);
servo lockservo;

void setup() {
serial.begin(9600);
myserial.begin(57600);
lockservo.attach(9);
lockservo.write(0); // lock position
if (finger.begin()) {
serial.println("fingerprint sensor found!");
} else {
serial.println("fingerprint sensor not found!");
while (1);
}
}

void loop() {
int id = getfingerprintid();
if (id != -1) {
serial.print("fingerprint id: ");
serial.println(id);
unlock();
delay(5000); // keep unlocked for 5 seconds
lock();
}
delay(1000);
}

int getfingerprintid() {
int p = finger.getimage();
if (p != fingerprint_ok) return -1;

p = finger.image2tz();
if (p != fingerprint_ok) return -1;

p = finger.fingersearch();
if (p != fingerprint_ok) return -1;

return finger.fingerid;
}

void unlock() {
serial ...

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