# RFID RC522 with Raspberry Pi 5: A Comprehensive Guide ## Introduction to RFID RC522 and Raspberry Pi 5 Integration **RFID RC522** is a popular and cost-effective RFID (Radio Frequency Identification) reader/writer module widely used in maker projects, access control systems, and IoT applications. When combined with the powerful **Raspberry Pi 5**, it opens up numerous possibilities for creating sophisticated RFID-based systems with enhanced processing capabilities and connectivity options. ## My Personal Experience with RFID Projects In my journey with embedded systems, I've found RFID technology particularly fascinating. I remember my first project using an **RFID RC522** with an older Raspberry Pi model to create a simple door access system for my home workshop. The satisfaction of seeing the LED turn green when presenting the correct card was immensely rewarding. With the **Raspberry Pi 5**'s improved performance, I've been able to create more complex systems that can handle multiple users, log access attempts with timestamps, and even integrate with web applications. ## Technical Specifications of RFID RC522 Module ### Physical Dimensions and Components - Module Dimensions: 40mm × 60mm × 6mm - Operating Frequency: 13.56 MHz - Supported Protocols: ISO 14443A, MIFARE - Communication Interface: SPI (default), I2C, UART - Operating Voltage: 3.3V (compatible with Raspberry Pi 5 GPIO) - Current Consumption: 13-26mA - Reading Distance: 0-30mm (depending on antenna design and tag type) ### Chip Information and Technical Parameters - Primary IC: NXP MFRC522 - Chip Code: MFRC52201T/0FE, 8H8N - Supporting ICs: 74HC4050D (level shifter), 78L33 (voltage regulator) - Antenna: Integrated PCB antenna with tuning components - Data Transfer Rate: Up to 424 kbit/s - Crypto Support: MIFARE Classic encryption *Note: These technical parameters are reference data. For exact specifications, please contact our backend management team.* ## Skill Development: Creating Advanced RFID Applications My natural aptitude for system integration has allowed