MFRC522 13.56MHz RFID Reader/Writer Module for Arduino
MFRC522 13.56MHz RFID Reader/Writer Module with SPI Interface
The MFRC522 RFID module is a compact 13.56MHz contactless reader/writer based on the NXP MFRC522 IC. It supports ISO/IEC 14443 A/MIFARE and NTAG tag types, making it ideal for access control, attendance systems, and IoT projects. With SPI communication, it easily connects to popular microcontrollers for reading and writing NFC tags.
Key Specifications
| Specification | Value |
|---|---|
| Operating Frequency | 13.56 MHz |
| Communication Interface | SPI (up to 10 Mbps) |
| Supported Tag Types | MIFARE Classic, MIFARE Ultralight, NTAG2xx |
| Operating Voltage | 2.5V - 3.6V (3.3V typical) |
| Read Range | Up to 5 cm (with included antenna) |
| Current Consumption | 13-26 mA (typical) |
What You Can Build With This
- RFID door lock with solenoid or servo control
- Automated attendance system logging card UIDs
- Smart inventory tracker with tagged items
- Contactless payment terminal using MIFARE wallets
Compatibility
Works with Arduino (Uno, Mega, Nano via SPI), Raspberry Pi (enable SPI interface), and ESP8266/ESP32. The module requires 3.3V power and logic; for 5V systems, use level shifters or a 3.3V-compatible breakout. Pairs well with the MFRC522 library for Arduino and the Pi mfrc522 Python package.
Wiring Notes
Connect SDA to SS (CS), SCK to SCK, MOSI to MOSI, MISO to MISO, and RST to a digital pin. The IRQ pin is optional. Always provide 3.3V to VCC and ensure all logic signals are at 3.3V to prevent damage.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, it works with Arduino Uno using the SPI pins (10-13) and the MFRC522 library. However, the module is 3.3V — use level shifters on the SPI lines if powering from 5V, or opt for a 3.3V-tolerant board.
Does it work with Raspberry Pi?
Yes, enable SPI via raspi-config and use the mfrc522 Python library. Connect to the Pi’s 3.3V supply and SPI pins; no level shifting needed.
What tags are included?
The module is sold without tags. Compatible tags include MIFARE Classic 1K/4K, Ultralight, and NTAG213/215/216. Most common RFID cards and key fobs based on these standards will work.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items