Where the idea came.
The idea of creating RFID Emulator come from the idea to create an environment for developing and experimenting with different RFID applications. This article was created with the goal of engineers amateur enthusiasts and fans of electronics who like to experiment with different radio frequency devices and face their challenges. Later i realized it for the useful application of the schematic in our daily lives and how useful it can be developed schematic for making a backup of the existing RFID card, so you always have a backup of your access card - as assume that you have the spare keys to your home or car. If you loss your RIFD card, you will have backup using RIFD Emulator, you will not be able to lift without the barrier of your garage or sitting outside the office. After using this emulator for emergency needs when is possible and in convenient time you can tell people supporting system for access control that your card is lost and want new. And with RFID emulator you can make a backup of it and to use it in subsequent similar need. Most useful of all this is that RIFD Emulator will not confuse engagements planned for the day.

You can buy kit for assembling and see another interesting projects in my website: www.kukata86.com

If you have another ideas or has developed better shematic with  more  options, Please share it with us on my website, let's make this project bigger and better.

Creators and distributors of the scheme and the materials needed for construction and will not be responsible for malicious actions by malicious individuals from tampering with the device! Everything about this device and the attached article is for educational and experimental purposes. Use at your own risk!

Step 1: What is RFID and what RFID emulator?

        Radio frequency identification, or RFID often abbreviated Radio Frequency IDentification is method for automatic identification of objects, where the object IDs  read or write data using radio waves. The technology is based on radio frequency communication between specially crafted identifier (label, tag, card, keychain, sticker or other.) and Reader. Each chip contains an identifier stored inside, with unique number and antenna. Depending on the system configuration in "reading" the number may take action - for example, to open door, barrier or other reaction - or information can be sent to the computer for proper decision making. Some types of RFID cards allow multiple recording information which opportunities they further expand. Distance, which can be "read" identifier depends on many factors such as frequency, size and shape of the antenna, the environment and more. Even distance can reach tens of meters using active RFID tags, ie. using additional power (like a battery or other).

        The RFID Emulator developed here is designed with open software and hardware and is subject to dynamic progression in finding new ideas for lovers developers, whichever you may be too. In the Internet there are several similar devices - such OPEN PICC or PROXMARK - but they do not support low-frequency identification, and in turn are quite expensive and not as flexible. Also are portable and mostly depend on external power or need to connect to a computer.

      Unlike these devices, the idea of the RFID Emulator was developed to drive stick on the following conditions:
       -->>Elementary, so it's easy to understand how it works from electronic lovers if they have little knowledge of electronics in order to exchange ideas and contribute to its development. Easy to understand software and minimal hardware complexity.
       -->>Easy to practical work. All parts can be easily sourced from a nearby electronics store.
       -->>To be largely controlled by software and to be easy sophisticated when there is ideas for development, hardware side to be most optimal and functional, and almost to be not changed or if needed to be a very small range.

      The Results by the moment is:
       -->>Far advanced our RFID Emulator can work with the following coding standards: EM4100, TK5551, Verichip, similar to ISO 11784, Biphase, Manchester, PSK, RAW encoding
       -->>Speed of data transfer is from 8 to 256 cycle for bit.
       -->>Volume of space for storing map data 1920 bits (firmware limit).
       -->>100% passive. Does not need battery.

<p>Nice work</p>
<p>where i can buy it</p>
<p>Did anyone ever end up trying clonemykey.com? We own an apartment building and need our entire stock of key cards duplicated. The system won't let us add anymore and upgrading costs a fortune! The company says it can duplicate or &quot;clone&quot; our keys but we're very hesitant to send them money and our only keys!</p>
Am I the only one who noticed that the buttons on the video are on the up side but on the photos they are always on the downside?
Yes, the first prototype was developed with buttons from the side with componenets, but after that i choose to make buttons from back side becouse was is easier to put it in a box, and push buttons from this side. Bigger eletrolitic capacitor is too high, and was dificult to push the butons when was on side with components. Second modification was only for buttons,There is no other changes on schematic.<br>In the video clip i use the first &quot;working prototype&quot; board.
What is the second button for?
The second buton is for optional/future releases or for your custom option if you make your own code. For now it's not used.
Also, I forgot to ask <br>Do you program the microcontroller using the 5 pin header? <br>If so, how do you connect it to a computer. <br>Do you need any other hardware for it? <br>One last question: would it be possible to program it using Arduino
No i program it using pickit2 programmer without soldering.<br>You can program it using this header after solder it once without solder and desolder the chip from board many times becouse you can burn it. <br>This is normal ICSP header/conector that have every pic programmer like pikkit 2 or 3. You can find more info in the internet about this header.<br>Maybe it's possible to use arduino for programing with propper software in it, but i think will be easier to use some cheap programmer.
Is this 125Khz or 13.56Mhz? It mentions both EM4100 and Mifare which are separate frequencies, very cool! <br> <br>If people are looking for just a cloned key www.clonemykey.com is a much easier way, kinda expensive though.
by using this can i design my ownRFID system for position control
So your idea didn't come from http://www.instructables.com/id/A-Universal-RFID-Key/ then?! It's good to see that you have been able to take the idea further. Nice work.
http://www.youtube.com/watch?v=RFWFh6Ko5YE <br> <br>is this like yours,isnt it?
Identical PCB, seem's exactly the same to me...
No it isn't. But it's another interesting demo clip. Thank you for request.
Nice and detailed. Great work!
I have a neat pack of Instructables to talk about, today on my Blog, and your's one of them! :) <br>http://faz-voce-mesmo.blogspot.pt/2012/11/instructables-traceparts-e-noticias.html <br>
Thank you so much Edgar.I appreciate the gesture
You know, I've been divulging this stuff for a couple of years, now but one day, I thought, maybe folk will like to know their work is been divulged...I guess I was right! :D
I'm pretty curios by the whole RFID world possibilites, one thing it bothers me though: I managed to read my own work key (wich contains an Rfid chip) with a nexus (Android phone) equipped with a nfc reader. Could it be possible to use the same principle (cloning a rfid card) with just a smartphone and an nfc reader?
RFID emulator works with 125kHz and EM4100 proticol. RFID emulator and NFC use RFID (Radio Frequency IDentifiication), but use different standats for comunication and use different frequency NFC standarts are ISO/IEC 14443 and FeliCa and ISO/IEC 18092 and use 13.56 MHz that is hardware integrated.You can't make device for 125kHz to be Readed by 13.56 and inverce.Resonant frequency of the two devices is different and ся hardware set.<br>You can't emulate nfc tag working on 13.65 Mhz with RFID emulator from this article and can.t emulate 125 kHz rfid chip from nfc transmitter.It's not hardware supported.<br>RFID emulator can be used only for 125kHz systems.that is most identification cards with only identification in it. it's used in Barriers, access gates and ect.<br>When you already have Nexus and nfc device If you want to copy nfc chip just read it and write it in new blank and you will have 2 similar chips.See ths link<br>http://buildcontext.com/blog/2011/nfc-tag-sticker-writing-programming-google-android-nexus-s<br><br>I hope this information helps.Greetings.<br>

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Bio: www.kukata86.com
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