R300 Uart Interface Capacitive Fingerprint Module

R300 Uart Interface Capacitive Fingerprint Module Documentation

Overview

The R300 Uart Interface Capacitive Fingerprint Module is a high-performance fingerprint recognition module designed for various IoT applications. It features a capacitive fingerprint sensor, a high-speed UART interface, and a built-in algorithm for fingerprint recognition. This module is suitable for applications such as biometric authentication, access control, and identity verification.

Technical Specifications

Fingerprint sensor: Capacitive, 508 dpi
 Recognition algorithm: Proprietary, high-speed, and high-accuracy
 UART interface: 3.3V or 5V, 9600-115200 bps
 Operating voltage: 3.3V or 5V
 Operating current: 100mA (max)
 Dimensions: 21mm x 16mm x 4.5mm

Code Examples

### Example 1: Basic Enrollment and Verification using Python

Hardware Requirements

R300 Uart Interface Capacitive Fingerprint Module
 Microcontroller or Single-Board Computer (e.g., Raspberry Pi, Arduino)
 UART serial interface (Tx, Rx)

Software Requirements

Python 3.x
 PySerial library (for serial communication)

Code
```python
import serial

# Initialize serial communication
ser = serial.Serial('COM3', 9600, timeout=1)  # Replace COM3 with your serial port

# Define commands for enrollment and verification
ENROLL_CMD = b'x01x00x00x00x01x00x00x00'
VERIFY_CMD = b'x01x00x00x00x02x00x00x00'

def enroll_fingerprint():
    # Send enrollment command
    ser.write(ENROLL_CMD)
    response = ser.read(16)
    if response[0] == 0x01:
        print("Enrollment successful")
    else:
        print("Enrollment failed")

def verify_fingerprint():
    # Send verification command
    ser.write(VERIFY_CMD)
    response = ser.read(16)
    if response[0] == 0x01:
        print("Verification successful")
    else:
        print("Verification failed")

# Enroll a new fingerprint
enroll_fingerprint()

# Verify the enrolled fingerprint
verify_fingerprint()
```
### Example 2: Integration with Arduino for Access Control using C++

Hardware Requirements

R300 Uart Interface Capacitive Fingerprint Module
 Arduino Board (e.g., Arduino Uno, Arduino Mega)
 Breadboard and jumper wires

Software Requirements

Arduino IDE (version 1.8.x or later)

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

// Define serial pins for R300 module
#define R300_TX 2
#define R300_RX 3

SoftwareSerial r300Serial(R300_TX, R300_RX);

void setup() {
  Serial.begin(9600);
  r300Serial.begin(9600);
}

void loop() {
  // Enroll a new fingerprint
  byte enrollCmd[] = {0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00};
  r300Serial.write(enrollCmd, 8);
  delay(1000);  // Wait for enrollment process to complete

// Verify the enrolled fingerprint
  byte verifyCmd[] = {0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00};
  r300Serial.write(verifyCmd, 8);
  delay(1000);  // Wait for verification process to complete

// Check verification result
  byte response[16];
  r300Serial.readBytes(response, 16);
  if (response[0] == 0x01) {
    Serial.println("Access granted");
    // Unlock door or activate relay
  } else {
    Serial.println("Access denied");
  }
  delay(1000);
}
```
Note: In this example, we use the SoftwareSerial library to establish a serial communication between the Arduino board and the R300 module.

These examples demonstrate the basic usage of the R300 Uart Interface Capacitive Fingerprint Module for enrollment and verification of fingerprints. You can modify the code to suit your specific application requirements.