how do i find the unique id to my rfid tags?
chilton
Posts: 3
I apologize for the supper noob question but this is my first time using rfid technology. I am making a device that uses two rfid tags (world tag 50mm), read by a rfid reader, then the signal is sent to a basic stamp 2 module lf, via a basic stamp supercarrier which will then use one of two reed relays to trigger a remote control. In a sense making a touchless remote control. I understand the basic coding I am just unsure how to obtain the unique id for each id tag.
I understand that the carrier board will connected to a computer using the serial connection however once the carrier is connected to the serial how do you communicate with it? Also do you have to compile the basic 2 stamp before loading? If so with what? Any and all help would be very very appreciated.
I understand that the carrier board will connected to a computer using the serial connection however once the carrier is connected to the serial how do you communicate with it? Also do you have to compile the basic 2 stamp before loading? If so with what? Any and all help would be very very appreciated.
Comments
The card reader will spit out a string whenever the tag comes within range. Within that string will be the unique identifer for the tag. The Stamp will be programmed (by you) to get the id and do what you want with it. Most of the work will be done by the SERIN command.
Once programmed, the system will be stand alone. You can feed the serial string from the reader in the programming port (pin 16) or leave it available and use another pin (0 to 15) as serial input from the reader.
You can have a look at the docs for the reader online.
This, BTW, will be a neat project and others will be interested in your efforts.
Cheers,
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Tom Sisk
http://www.siskconsult.com
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Post Edited (chilton) : 4/10/2007 8:38:33 PM GMT
The RFID_basic code displays tags on the DEBUG screen, whereas the other example code looks them up and compares them to a know list. Download the RFID_basic code and you can read the numbers from any of our tags. I hope this helps. Take care.
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Chris Savage
Parallax Tech Support
Anyway, the carrier board's Stamp is the thing you need to program with code that will handle the input from the rfid tag. And, to program the Stamp (on the carrier board), you need to connect the board/Stamp to your computer where your Stamp programming editor is installed. You create your Stamp program in that editor (on your computer) and then you download that program to the Stamp to test it and then run it.
To learn how to connect the Stamp to your computer, and to learn how to use the Stamp's programming editor, you could probably start with Parallax's free "What's a Microcontroller?" manual, " http://www.parallax.com/detail.asp?product_id=28152·", (download it, or purchase the paper version with the parts you'll want to have on hand to do the tutorial lessons).
More information about how the rfid module can be integrated into your Stamp system can be found in http://www.parallax.com/dl/docs/prod/audiovis/RFID-Reader-v1.2.pdf
Other rfid-related documents can be found at http://www.parallax.com/detail.asp?product_id=28140
Those documents are where to start, to learn how to "plug it in", program the Stamp to gather and use the information sent from the rfid, etc.
More specific questions, based on difficulty with specific attempts to use the documentation, will yield·more specific replies from forum contributors.
PAR
thank you very much for the help!