• on Computer/Software/Internet
  • Published in issue 5/2015 on page 78
About the article

NFC ‘e-BoB’ Gateway

NFC tag module with serial interface

NFC ‘e-BoB’ Gateway
Practically every modern smartphone has an NFC interface which allows it, for example, to read RFID tags or exchange data with another NFC device. Our NFC gateway in e-BoB style lets you explore the capabilities of your own smartphone, but that is not all: the built-in tag IC lets you read and write data using simple commands over a serial interface, with the help of an ATmega328 acting as the bridge.
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Products
Relevant websites
Extra info, Update
* NFC module with UART connection * Direct reading and writing of data using a PC or microcontroller * Up to 1904 byte EEPROM and 64 byte SRAM available * Tag IC on separate breakout board * Printed antenna on main circuit board * Serial interface at TTL voltage levels * Power supply 5 V or 6 V to 12 V * ECC header, compatible with a range of Elektor projects
Components
Download the BOM list
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component Lists
NFC Gateway Board
Resistors
Default: 5%, 0.1W, SMD 0603
R1,R3,R4 = 10kOhm
R2,R6,R7 = 1kOhm
R5 = 1.5kOhm
Default: 10%, SMD 0603
C1,C2 = 22pF, 50V, C0G/NP0
C3,C4,C5,C7 = 100nF, 16V, XR7
C6 = not fitted *
C8,C9 = 1µF 20%, 6.3V, X5R
C10 = 4.7µF, 6.3V, tantalum, SMD 0805, 7Ohm ESR
C11 = 10µF +80/–20%, 20V, SMD 1206, Y5V
D1,D2,D3 = LED, green, SMD 0805
D4 = PMEG2010AEH
IC1 = ATmega328P-AU, TQFP 32A, programmed
IC2 = XC6206P332MR, SOT23-3
IC3 = NCP5501DT50G, DPAK 3
K1 = 10-pin (2x5) pinheader, 0.1” pitch
K2 = 6-pin (2x3) boxheader, 0.1” pitch
K3,K4 = not fitted
K5,K6 = 2-pin pinheader, 0.1” pitch
JP1 = 3-pin pinheader, 0.1” pitch, with jumper
S1 = pushbutton, 1 make contact, 6x6 mm, 12V, 50mA
X1 = 16MHz quartz crystal, CL = 18pF, SMD, 5x3.2mm
PCB no. 140177-1 v1.1 [4]
Ready assembled unit # 140177-92* [4]

NFC e-BoB Board
Capacitors
C1 = 18pF 5%, 50V, SMD 0603, C0G/NP0 *
Semiconductors
IC1 = NT3H1201W0FHK, SMD XQFN8
Miscellaneous
K1,K2 = 4-pin pinheader, round pins, 0.1” pitch
PCB # 140177-2 v1.0 or ready-assembled unit # 140177-92* [4]
* see text

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