sparkfun RFID Starter Kit, Руководство по подключению

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If you already know how RFID works (or would just like to continue
believing the reader module contains a very small hamster with x-ray eyes),
skip ahead to the kit overview section.
How RFID doesn’t work
R adio F requency ID entification uses radio waves to detect the presence of
(then read the data stored on) an RFID tag. Tags are embedded in small
items like cards, buttons, or tiny capsules.
Image courtesy of EPC RFID
Passive tags (like the ones included with this kit) gather electromagnetic
energy from the card reader and use that to transmit their unique serial
number. More sophisticated tags may have their own internal power supply
for increased range.
A Few Common RFID Reader Types
Frequency AKA Range Read/write SparkFun
product
120-150
kHz (LF) "Chips/microchips"(in
veterinary
applications), prox
cards, HID cards
(both trade names) Up to
20 cm Read only ID-3LA,
ID-12LA,
ID-20LA,
SparkFun
RFID
Starter Kit
13.56 MHz
(HF) MiFare, NFC Up to
1
meter Read/write SM130
module
and
evaluation
shield
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