How to Use M5Stack RFID 2 Unit
19 Dec 2024
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The M5Stack RFID 2 Unit represents a versatile radio frequency identification device that is equipped with the WS1850S chip. This device operates at a frequency of 13.56MHz and offers a comprehensive array of functionalities, including the reading and writing of RF cards, data recognition and recording, encoding, and authorization management. Its magnetic field induction technology enables seamless, non-contact, two-way communication, rendering it highly suitable for a diverse range of information verification applications.
Key Features of RFID 2 Unit
- Enhanced Chip Integration: The RFID 2 Unit incorporates the WS1850S chip, offering improved performance compared to its predecessor (RFID UNIT with RC522 chip). While the core functionalities remain unchanged, the upgraded chip ensures better efficiency and reliability.
- Multi-functionality:
- Reading and writing RF cards
- Encoding and decoding
- Managing authorizations
- Supporting non-contact card recognition and verification
- Magnetic Field Induction Technology: This enables non-contact, two-way information interaction, ensuring quick and secure data transactions.
- Wide Compatibility: Works seamlessly with proximity cards, IC cards, and even NFC-enabled mobile devices.
Application Scenarios
The RFID 2 Unit is designed to cater to a variety of real-world needs:
- Access Control Systems: Ensure secure entry and exit for restricted areas.
- Check-in Systems: Simplify attendance management in offices, schools, or events.
- Warehouse Management: Streamline the process of tracking goods entering and exiting storage facilities.
- Community Vehicle Registration: Automate vehicle entry and exit records for residential areas or commercial complexes.
| Resources | Unit RFID 2 | Unit RFID |
| Read and Write IC | WS1850S | MFRC522 |
| Operating frequency | 13.56MHz | |
| Communication protocol | I2C: 0x28 | |
| Support protocol | ISO14443A, MIFARE and NTAG | |
| Operate temperature | -20℃ - 85℃ | -20℃ - 85℃ |
| Net weight | 6g | 6g |
| Gross weight | 21g | 21g |
| Product size | 48 * 24 * 8mm | 48 * 24 * 8mm |
| Packing size | 136 * 92 * 8mm | 67 * 53 * 12mm |
How to Use the RFID 2 Unit
Materials Required:
- M5Core: The control unit, used for running the system and managing various modules.
- RFID 2 Units: Reading modules, used for reading RFID tags.
- Type-C: Cable used for power connection or data transfer.
- M5Stack Unbuckled Grove Cable: Grove interface cable, used for connecting sensors to the main control unit.
To get started with the RFID 2 Unit, follow these steps:
- Hardware Setup: Connect the RFID 2 Unit to Port A (pins 22 and 21) of the M5Stack Core device.
- Software Configuration:
- Use the provided sample code (
RFID.ino) to test the unit's functionality.
Sample Code Highlights
#include
#include "MFRC522_I2C.h"
MFRC522 mfrc522(0x28); // Create MFRC522 instance.
void setup() {
M5.begin(); // Initialize M5Stack
M5.Power.begin(); // Initialize power module
M5.lcd.setTextSize(2); // Set text size
M5.Lcd.println("MFRC522 Test");
Wire.begin(); // Initialize I2C bus
mfrc522.PCD_Init(); // Initialize MFRC522
M5.Lcd.println("Please put the card\n\nUID:");
}
void loop() {
M5.Lcd.setCursor(40, 47);
if (!mfrc522.PICC_IsNewCardPresent() || !mfrc522.PICC_ReadCardSerial()) {
delay(200);
return;
}
M5.Lcd.fillRect(42, 47, 320, 20, BLACK);
for (byte i = 0; i < mfrc522.uid.size; i++) {
M5.Lcd.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
M5.Lcd.print(mfrc522.uid.uidByte[i], HEX);
}
M5.Lcd.println("");
}
✔ Copied!
Steps Explained:
- Initialization: The code initializes the M5Stack device and the RFID module.
- Card Detection: The program detects new cards placed near the RFID reader.
- ID Display: Once detected, the card's unique ID (UID) is displayed on the M5Stack Core's screen.
The M5Stack RFID 2 Unit is a powerful tool for implementing RFID-based solutions in diverse scenarios. Its robust features, coupled with an easy-to-use interface, make it a reliable choice for developers and system integrators. Whether you are managing access control, inventory systems, or automated check-ins, this device offers an efficient and cost-effective solution.
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FAQs
comparison between WS1850S and MFRC522 chips
Here is a detailed comparison between WS1850S and MFRC522 chips based on common technical specifications:
| Feature | WS1850S | MFRC522 |
| Chip Type | Read/Write IC | Read/Write IC |
| Supported Protocols | ISO/IEC 14443 Type A/Type B | ISO/IEC 14443 Type A |
| Communication Interface | I2C (address: 0x28) | SPI, UART, I2C |
| Operating Frequency | 13.56 MHz | 13.56 MHz |
| Power Consumption | Generally lower | Low, but slightly higher compared to WS1850S |
| Key Features | Supports wider protocols, including Type B, suitable for versatile applications | Focused on Type A, ideal for basic RFID applications |
| Hardware Design | Highly integrated, suitable for embedded applications | Less integrated, requires external circuit support |
| Applications | Advanced NFC applications, such as payment and access control | Basic RFID projects, such as door access systems |
| Package Size | Smaller, ideal for portable devices | Slightly larger, often used with modules |
| Market Price | Generally higher than MFRC522 | Cost-effective, suitable for budget projects |
| Documentation & Support | Limited, depends on manufacturer resources | Well-documented, widely supported by the community |
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