30 Dec '11, 5pm

xmas visitors are gone! today it's an RFID circuit with a kit from Sparkfun. Part: arduino code:

Code for the Innovations ID-12 RFID tag reader This is a piece of code that lets you read out the ID-12 RFID tag reader (sparkfun.com) with an Arduino. The reader uses a 9600 baud serial connection with the Arduino. When uploading the sketch, you need to pull out the RX wire to the reader, otherwise it will disturb the uploading. (Alternatively, alter the sketch, use NewSoftSerial , and also change the pin you connect the ID12 with, and use separate pins for programming the Arduino and for talking to the ID12 . Not as hard as it sounds, and has many benefits!) I added (limited) ASCII/HEX conversion to make further processing of the tag codes (5-byte words) more efficient. I also added simple checksum verification in the example. The sketch is scraped together from (or inspired by) multiple sources, see the code. Use the drawings from HC Gilje to wire up the ID-12 (see http...

Full article: http://www.arduino.cc/playground/Code/ID12

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