FM220U Finger Print Scanner

FM220U Finger Print Scanner Documentation

Overview

The FM220U Finger Print Scanner is a high-performance fingerprint recognition module designed for various applications, including IoT devices, access control systems, and identity verification systems. This module features a compact design, high accuracy, and fast recognition speed.

Technical Specifications

Fingerprint sensor: Optical sensor
 Resolution: 508 dpi
 Image size: 256x288 pixels
 Scan time: <1 second
 Storage capacity: 1000 fingerprint templates
 Communication interface: UART (TTL level), USB (optional)
 Power supply: 5V DC, 150mA
 Operating temperature: -20C to 60C
 Dimensions: 36mm x 36mm x 12mm

Code Examples

### Example 1: Basic Fingerprint Enrollment and Verification using Arduino

In this example, we will demonstrate how to enroll a new fingerprint and verify it using the FM220U Finger Print Scanner with an Arduino board.

Hardware Requirements

FM220U Finger Print Scanner
 Arduino Board (e.g., Arduino Uno)
 Breadboard and jumper wires

Software Requirements

Arduino IDE (version 1.8.x or later)

Code
```c++
#include <SoftwareSerial.h>

#define FM220U_RX 2 // RX pin for FM220U
#define FM220U_TX 3 // TX pin for FM220U

SoftwareSerial fm220u(FM220U_RX, FM220U_TX);

void setup() {
  Serial.begin(9600);
  fm220u.begin(57600); // default baud rate for FM220U
}

void loop() {
  // Enroll a new fingerprint
  Serial.println("Place your finger on the scanner...");
  delay(2000);
  fm220u.write(0x01, 0x00); // send enroll command
  fm220u.write(0x02, 0x00); // send enroll data packet
  fm220u.write(0x03, 0x00); // send enroll data packet
  fm220u.write(0x04, 0x00); // send enroll data packet

// Wait for enrollment to complete
  delay(2000);

// Verify the enrolled fingerprint
  Serial.println("Place your finger on the scanner again...");
  delay(2000);
  fm220u.write(0x05, 0x00); // send verify command
  fm220u.write(0x02, 0x00); // send verify data packet

// Read the verification result
  int result = fm220u.read();
  if (result == 0x00) {
    Serial.println("Verification successful!");
  } else {
    Serial.println("Verification failed!");
  }

delay(2000);
}
```
### Example 2: Fingerprint Authentication using Python and Raspberry Pi

In this example, we will demonstrate how to use the FM220U Finger Print Scanner with a Raspberry Pi to implement fingerprint-based authentication.

Hardware Requirements

FM220U Finger Print Scanner
 Raspberry Pi (e.g., Raspberry Pi 4)
 Breadboard and jumper wires

Software Requirements

Python 3.x
 pyserial library (install using `pip install pyserial`)

Code
```python
import serial
import time

# Initialize the serial connection
ser = serial.Serial('/dev/ttyUSB0', 57600) # adjust the serial port and baud rate accordingly

def enroll_fingerprint():
  print("Place your finger on the scanner...")
  time.sleep(2)
  ser.write(b'x01x00') # send enroll command
  ser.write(b'x02x00') # send enroll data packet
  ser.write(b'x03x00') # send enroll data packet
  ser.write(b'x04x00') # send enroll data packet

# Wait for enrollment to complete
  time.sleep(2)

def verify_fingerprint():
  print("Place your finger on the scanner again...")
  time.sleep(2)
  ser.write(b'x05x00') # send verify command
  ser.write(b'x02x00') # send verify data packet

# Read the verification result
  result = ser.read()
  if result == b'x00x00':
    print("Verification successful!")
  else:
    print("Verification failed!")

# Enroll a new fingerprint
enroll_fingerprint()

# Verify the enrolled fingerprint
verify_fingerprint()
```
Note: In both examples, you will need to modify the serial port and baud rate settings according to your specific setup. Additionally, this is just a basic demonstration of the FM220U Finger Print Scanner's capabilities, and you may need to implement additional error handling and security measures for a production-ready application.