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    Information about the Wiegand Protocol used in security systems

    Does anybody have any information on the Wiegand Protocol used in security systems? I have noticed that there are a few different implementations of the protocol but I can't find any information on the net.

    Is there a specification available, and where can I get hold of it?
    Can somebody please help?

    Thanx
    TheBoss :(

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    wiegand protocol specification

    Come on guys 26-bit wiegand? 34-bit wiegand? Doesn't anybody know anything about these protocols?

    I really appreciate any help...

    TheBoss :?



    •   Alt3rd October 2002, 13:05

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    weigand protocol

    hi,
    may this link help you
    http://www.circuitcellar.com/avr2004...16abstract.pdf

    bye
    Fire in the Wire



    •   Alt14th March 2006, 13:57

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    wiegand 26 protocol

    Hi,

    it is a 3 wire (GND, DATA0, DATA1):

    0's are impulses on DATA0 line
    1's are impulses on DATA1 line

    data bits are prefixed and postfixed with parity
    length of data bits chunk can vary from 24-40 bits

    i have somewhere in the archive my very old
    asm implementation for atmel (51 core)
    if you are interested ...



    •   Alt15th March 2006, 17:18

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  5. #5
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    wiegand protocol pdf

    It is a protocol that is used in "Access Control Systems" mostly the wireless ones, the Door reader reads induces electric field throug its Antenna when the card is in the coverage field, it returns back a certain number that is the card number.
    Card Numbers can be formatted in many formats like the Wiegand and 35 system
    The wiegand-26- as an example splits the 26 bits into two groups of 13 bits
    the first group is used as a group identifier that all users within a corporate share, the other is user specific



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    wiegand 34

    Hi,
    I'm trying to interface a wiegand reader with a microchip micocontroller,I was reading the posts but I still can't get it,in datao I get the '0' and data1 the '1',has anyone a timimg diagram to understand how to read it??
    thanks a lot
    Javier



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    wiegand protocol

    Hi

    You no need to see the timing digrame, you can used the interrup base, if u using the PIC16f84 you can used the portb 4:7 as input and setting as interrup base port.

    good luck



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    wiegand 26 bit protocol

    Here you will find a diagram about Wiegand protocol:
    http://www.ibtechnology.co.uk/PDF/magswipe_dec.PDF

    cristi



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    zpc
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    wiegand protokoll




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    wiegand specification

    You have a lot of information in Wikipedia!! http://en.wikipedia.org/wiki/Wiegand_protocol - just check out the links.

    In my company we use several wiegand interfaced devices. We normaly just convert the protocol to RS-485 / or USB. You can easily find these converters out there. Check, for example, (http://www.etconcept.com/Wiegand.htm).

    Best Regards

    Fazenda



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    Re: Wiegand Protocol

    iam using weigand protocol for accessing Card readers,can anyone help what is the maximum lenght shuold i connect my controller away from reader.i have connected about 20m distance between controller and reader,and used switching supply for the supply.iam getting a wrong data when i show a configured data.plz help me guys.



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