Elecrow Crowtail NFC 2.0 RFID Reader Module - Arduino & IoT
Elecrow Crowtail NFC 2.0 RFID Reader Module - Read/Write 13.56MHz NFC Tags
The Elecrow Crowtail NFC 2.0 is an RFID reader module based on the PN532 chip, designed for easy integration with Arduino, ESP32, Raspberry Pi, and other IoT platforms. It supports reading and writing of 13.56MHz NFC tags including MIFARE, NTAG, and FeliCa. The Crowtail connector allows plug-and-play connection without soldering, making it ideal for prototyping access control systems, interactive installations, and contactless payment solutions.
Key Specifications
| Specification | Value |
|---|---|
| Chipset | NXP PN532 |
| Operating Voltage | 3.3V (5V tolerant on data pins) |
| Communication Interfaces | I2C, SPI, UART (selectable) |
| Operating Frequency | 13.56 MHz |
| Read/Write Distance | Up to 5 cm |
| Supported Standards | ISO/IEC 14443 A/B, FeliCa, NFCIP-1 |
What You Can Build With This
- NFC door lock using an Arduino and solenoid
- Contactless attendance system for schools or offices
- Mobile payment terminal prototype with a screen
- Interactive product display that reads NFC tags to show info
Compatibility
This module is compatible with any microcontroller that supports I2C, SPI, or UART communication. It works seamlessly with Arduino Uno, Mega, Nano, ESP8266, ESP32, and Raspberry Pi. When using 5V systems, the module’s logic-level conversion allows safe connection, but for 3.3V boards, no level shifting is needed.
Wiring Notes
For I2C connection (default), connect the module's VCC to 3.3V (or 5V if using a 5V board), GND to GND, SDA to SDA, and SCL to SCL. Ensure the I2C pull-up resistors are present (usually internal on Arduino boards). If using SPI, select the SS pin accordingly.
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, the Crowtail NFC 2.0 works with Arduino Uno out of the box. Connect via I2C using the provided Crowtail cable to the corresponding I2C pins (A4 for SDA, A5 for SCL).
Can it write data to NFC tags?
Absolutely. The PN532 chip supports read and write operations for most NFC tag types, including NTAG215 and MIFARE Classic, using libraries like Adafruit PN532.
What is the maximum reading distance?
The typical reading distance is 3–5 cm, depending on the tag size and antenna design. For optimal performance, ensure no metal objects are behind the tag.
📦 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.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
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