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RDM3600 RFID COMPONENT

Former Member

I have been using the Arduino platform for a while now(about 6 months) and I tried to hook up the RDM3600 RFID reader to my Arduino Uno and it seems like the reader does not communicate with the board. I present a card, but the serial interface does not display a serial number or anything. I am following this tutorial:

 

http://tronixstuff.com/2013/11/19/arduino-tutorials-chapter-15-rfid/

 

I modified the code to get an indication that the setup was complete:

 

#include <SoftwareSerial.h>

 

SoftwareSerial RFID(2, 3);

 

int i;

 

void setup()

{

  RFID.begin(9600);

  Serial.begin(9600);

  Serial.println("ready");

}

 

void loop()

{

  if (RFID.available() > 0)

  {

    i=RFID.read();

    Serial.print(i, DEC);

    Serial.println(" next");

  }

}

 

 

 

Does anyone have any idea why I don't get any communication from the RDM3600 when I present a RFID tag.

Parents
  • 0

    Paul is correct,   I have developed electronics for a bunch of years and a  generic recommendation i add a Serial port to all my projects as it is the easiest way to debug some times of firmwares.

     

    Regarding extending NFC,  be aware that extending the range on NFC devices is not a small task as the system is designed to be near field communication for security reasons.  We would not like some one reading and tampering with the data on the cards when taking public transportation image . Having said that I remember a proyect on Mifare cards that extended the range for some 1k cards. How much range you want to accomplish? 

  • 0 in reply to kgenskowsky

    I actually work for a public transportation fair collection devise manufacturing company as a mechanical engineer. The company I work for designed and developed a lot of the NFC technologies using in public transport.  I am participating in a hackathone this weekend and my team has proposed an assembly that reads RFID tags on a person as they walk through a door way without the person having to remove the tags from there pocket, wallet, etc...

     

    I have done a little research and have found that antenna diameter has a lot to do with the read range. I was hoping to increase the diameter of the RDM3600 antenna and maybe get a 10" (25.4cm) range so we could mount it on a door frame and read tags in a persons pocket as they walk through the door.

     

    It's just a proof of concept, and if it goes anywhere the real scientist would take over developing the product. But I need something that works to present to the judges.

Reply
  • 0 in reply to kgenskowsky

    I actually work for a public transportation fair collection devise manufacturing company as a mechanical engineer. The company I work for designed and developed a lot of the NFC technologies using in public transport.  I am participating in a hackathone this weekend and my team has proposed an assembly that reads RFID tags on a person as they walk through a door way without the person having to remove the tags from there pocket, wallet, etc...

     

    I have done a little research and have found that antenna diameter has a lot to do with the read range. I was hoping to increase the diameter of the RDM3600 antenna and maybe get a 10" (25.4cm) range so we could mount it on a door frame and read tags in a persons pocket as they walk through the door.

     

    It's just a proof of concept, and if it goes anywhere the real scientist would take over developing the product. But I need something that works to present to the judges.

Children
  • 0 in reply to Former Member

    Mmm, Interesting.

    The main problem is that as you extend the range you will require more and more power to send to the antenna (Remember in passive devices the signal is used to convert to power and to send data so as you get farther and farther away card will get less power.). Just changing the size will not give you extend range. You will be able to get to 10cm as the standard is delivered maybe 15cm with a direct chip connection to a bigger antenna.

    So check on active antennas to extend further away.

     

    For this application i would recommend using different card technology and readers. I know they exist haven't research much to recommend one.

     

     

    Also as you extend the ranges the times will get longer between data transfer and I know some NFC protocols and chips have embedded security to disable longer than 10 cm communications.

     

    I founded a project that might be of help. I had on my old researches.

    http://www.eng.tau.ac.il/~yash/kw-usenix06/

     

    It could work if you convert the doorway in a complete antenna. So the tag will path thru the center of the field, Still the power might be to big and you might and end deleting Hard disks and any other magnetic data device so be careful when testing.

     

     

    Hope this helps.