RFID Card R-W
RFID Card R-W
The RFID Card R-W is a Radio-Frequency Identification (RFID) card that allows for both read (R) and write (W) operations. This component is designed to store and transmit data using RFID technology, enabling efficient and secure communication between devices.
| The RFID Card R-W operates by storing data in its internal memory, which can be accessed and modified using a compatible RFID reader/writer device. The card can be used for various applications, including |
Authentication and access control
Data storage and tracking
Payment systems
Inventory management
Identity verification
The RFID Card R-W communicates with an external device through a wireless interface, using RFID technology to transmit and receive data.
| The RFID Card R-W can be used in various applications, including |
Access control systems
Payment systems
Inventory management
Identity verification
Healthcare applications
Supply chain management
| Parameter | Value |
| --- | --- |
| Frequency | 13.56 MHz |
| Storage Capacity | Up to 4KB |
| Read/Write Distance | Up to 10 cm (3.9 inches) |
| Data Transfer Rate | Up to 106 kbps |
| Operating Temperature | -20C to 70C (-4F to 158F) |
| Dimensions | 85.6 mm x 53.98 mm x 0.84 mm (3.37 inches x 2.13 inches x 0.03 inches) |
| Material | PVC |
By providing a detailed description of the RFID Card R-W, this documentation aims to assist developers, engineers, and enthusiasts in understanding the component's functionality, key features, and technical specifications, enabling the effective integration of this component into various IoT applications.
RFID Card R-W Component DocumentationOverviewThe RFID Card R-W component is a compact, high-frequency RFID (Radio Frequency Identification) card that can be used for reading and writing data to RFID tags. This component is designed to work with various microcontrollers and development boards, making it an ideal solution for IoT applications that require RFID tag identification, tracking, and data storage.Technical SpecificationsFrequency: 13.56 MHz
Communication protocol: ISO/IEC 14443A
Read/Write distance: up to 5 cm
Data storage capacity: 1 KB (EEPROM)
Operating temperature: -20C to 80C
Dimensions: 40 mm x 24 mm x 4 mmCode Examples### Example 1: Reading an RFID Tag using ArduinoIn this example, we will demonstrate how to use the RFID Card R-W component with an Arduino Uno board to read an RFID tag.```c
#include <RFID.h>#define RFID_RST_PIN 9
#define RFID_SS_PIN 10RFID rfid(RFID_SS_PIN, RFID_RST_PIN);void setup() {
Serial.begin(9600);
rfid.init();
}void loop() {
if (rfid.isCard()) {
String tagID = rfid.readCardSerial();
Serial.print("Tag ID: ");
Serial.println(tagID);
delay(1000);
}
}
```In this example, we include the `RFID` library and define the reset and slave select pins for the RFID component. In the `setup()` function, we initialize the RFID component and set up the serial communication. In the `loop()` function, we check if a tag is present and read its serial number using the `readCardSerial()` function. The tag ID is then printed to the serial console.### Example 2: Writing Data to an RFID Tag using Python and Raspberry PiIn this example, we will demonstrate how to use the RFID Card R-W component with a Raspberry Pi board to write data to an RFID tag.```python
import RPi.GPIO as GPIO
from mfrc522 import SimpleMFRC522reader = SimpleMFRC522()def write_data(tag_id, data):
reader.write(tag_id, data)try:
while True:
id, text = reader.read()
print("Tag ID: " + str(id))
print("Current data: " + text)
new_data = input("Enter new data to write: ")
write_data(id, new_data)
print("Data written successfully!")
except KeyboardInterrupt:
GPIO.cleanup()
```In this example, we use the `SimpleMFRC522` library to interact with the RFID component. We define a function `write_data()` that takes a tag ID and data to be written as parameters. In the main loop, we read the tag ID and current data using the `read()` function. We then prompt the user to enter new data to write, and call the `write_data()` function to write the data to the tag.