solderpad's avatar

Seeedstudio NFC Shield solderpad

A Near Field Communication interface for Arduino

seeedstudio.com/wiki/NFC_Shield

Recent activity:

  • 9600 updated6 years ago
  • psd pushed6 years ago
  • psd pushed6 years ago
  • 9600 pushed6 years ago

Tagged with

Description

NFC Shield is a Near Field Communication interface for Arduino build around the popular NXP PN532 integrated circuit. NFC is a short-distance radio technology that enables communication between devices that are held close together. NFC traces its roots in RFID technology and is an open platform technology standardized in ECMA-340 and ISO/IEC 18092.

NFC is widely used like RFID to recognize cards/tags (NXP Mifare Cards / Tags). NFC can be used as an alternative to travel card using the read/write memory provided by cards/tags. Few mobile phones comes with NFC inbuilt - they are used as readers of cards, tags, smart posters with a Web URL(like a Mobile QR-Code reader). This technology is also being applied for smart cashless purchases.

Like many other standards, NFC technology is regulated by Near Field Communication Forum which standardizes NFC communication -- how they devices pair, share data and allow a secure transaction to happen.NFC Forum develops and certifies devices compliant with NFC standards.

NFC operates on unlicensed ISM(Industry Scientific Medical) band of 13.56 MHz Frequency. NFC communication range is up to 10 cm. But, this is limited by the antenna and power radiation design. Most devices work within a range of 10mm. NFC Shield antenna is designed to work within a range of 1cm. NFC Shield provides all necessary circuitry for PN532 like 27.12Mhz crystal, power supply.It also beaks-out the I/O pins of PN532 for easy access.

The communication between Arduino and NFC Shield is via SPI.

Schematic

Board

Bill of Materials

Designator Value Description
C1 0.1uF Ceramic Capacitors
C2 0.1u Ceramic Capacitors
C3 10u Ceramic Capacitors
C4 10u Ceramic Capacitors
C5 22p Ceramic Capacitors
C6 22p Ceramic Capacitors
C7 0.1u Ceramic Capacitors
C8 10u Ceramic Capacitors
C9 10uF
C10 10uF
C11 220p Ceramic Capacitors
C12 220p Ceramic Capacitors
C13 68p Ceramic Capacitors
C14 68p Ceramic Capacitors
C15 100p Ceramic Capacitors
C16 100p Ceramic Capacitors
C21 0.1u Ceramic Capacitors
C22 1nF Ceramic Capacitors
C23 0.1u Ceramic Capacitors
C24 100nF
D1 1N4448WS
J1 HEADER-2X3P-2.54
J2 CK_1X8
J3 CK_1X8
J4 HEADER_1X6
J5 HEADER_1X6
J6 HEADER_1X6
J7 HEADER-12P-2.54
J8 HEADER_1X6
J9 CK_1X8
J10 CK_1X8
L1 560n
L2 560n
LOGO1 LOGO-OSHW-FILLX0200-NT
P1
P2
R1 1.5
R2 1.5
R3 1.0k
R4 1.6k
R5 10k
R9 10k
S0 JUMPER
S1 JUMPER
U$1 LOGO-SEEEDSTUDIO-SILK
U1 PN532
U4 MIC5205_3.3
U6 TXB0104PWR 4-bit Bidirectional Voltage-Level Translator
Y1 27.12M CRYSTAL

[JSON]

Files

This project is © HQF & Nancy / Seeedstudio, and is published under the terms of the Creative Commons Attribution-ShareAlike 3.0 Unported licence.