ATM18 = RFID Savvy

EM4095, ATmega and Bascom

RFID appears to be well on its way to becoming a technology of the future. Many people mistrust this technology, while some see it as the answer to every problem. One thing is certain: these tiny devices will be everywhere around us in the future, whether or not we notice them. Our ATM18 board provides the ideal basis for experimenting with RFID devices and implementing your own ideas.

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Materials

080910-PCB.pdf

080910-11.zip

Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

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PCB

Download Gerber file: 080910-1_V11

Extra info / Update

Main specifications
RFID Reader:
- Connects to Elektor ATM18 test board
- Compatible with RFID tags using EM4102 and EM4200
- 5 V supply voltage
Bascom RFID software for ATM18:
- Reads RFID data
- Outputs RFID data via RS232
- Shows RFID data on LC display
- Relay control by RFID

Component list

Resistor
(SMD 0805)
R1 = 68Ohm

Capacitors
(SMD 0805)
C5 = 47pF
C2,C3,C4 = 1nF
C7,C8 = 10nF
C1,C9,C10 = 100nF
C6 = not fitted (see text)

Semiconductors
IC1 = EM4095 (SMD SO16)

Miscellaneous
K1 = solder pin
K2 = 2-way pinheader, 0.1" lead pitch (2.54mm)
K3 = 5-way pinheader, 0.1" lead pitch (2.54mm)
PCB with SMD parts prefitted, incl. pinheaders, order # 080910-91