Adding memory device in a RFID project

I am doing project on RF-Id technology.
I have developed handheld transreceiver. & a Tag whose unique ID code is set only with jumper settings on back side of card.
Now can u please suggest me if I wants to add memory devie on tag should I do this with only adding microcontroller or should I keep product information only on host side in data base

Re: RF ID technology

It is better if u use a microcontroller on the tag.
It will give u added functionality as well as it will satisfy your requirement of storing the data on the tag itself.it will also give u added security as u can have passwords for accessing the tag on the tag itself.

Re: RF ID technology

Use a microcontroller with very low consumption if you design a passive tag.
To have a small consumption it's recommended to work at low clock speeds - hundreds of kHz.
You will derive the uC clock from the tag coil signal, so it will be synchronized to the host transceiver frequency and use some sleep/power reduction modes on the uC if the clock frequency is to high.
For data transmission you can use load modulation - the uC will turn on/off a transistor connected across the LC tank.

RF ID technology

If you need more info u can reply here.because I have worked on this .....

RF ID technology

hey friend...
i m sudhanshu...workin on RFID library for my final project...
will u plz help me out by providin the necessary diagrams and information you have...
waiting..
my email id :- sudhanshu_18@hotmail.com

Re: RF ID technology

rfid project

http://www.neotechid.com/

Re: RF ID technology

hi,

Can u explain ur project? I have worked in RFID related products for 2 yrs.

What is the type of the tag which u are trying to construct Active or Passive or semi-Passive?

in case of passive u have hell a lot of compliance protocols such ISO15693 ISO14443 etc.

What is the frequency of operation

Re: RF ID technology

hi
i am also working in rfid related project
i am using mfrc500(mifare) reader
it is a passive
but i too have so many problems in the project

Added after 20 minutes:

i am using 13.56mhz

RF ID technology

Dear All :
I have do RFID 13.56MHz Project now. I want to design a RFID Tag EVB board for FPGA test , Any comment ? Thanks

Re: RF ID technology

Hello friends,
Try this kit (Project from www.united77.com). They give complete working project. i have done this project sucessfully. It comes with 2 valid cards. Extra cards can be requested.

RFID based Keyless lock with Atmel 89C52. The access to the door is only granted to those persons having a valid RFID card. In case you loose your card, still you can open the door by just entering the 10 digit master code provided with the kit. The door status is constantly monitored and displayed on a 16x2 LCD module and is highly secured even in an event of power failure. Wrong password protection for 3 attempts with intermittent warning buzzer for password tampering and a loud siren is provided to door tampering detection. A on board relay is provided with a 3 Pin connector for any external loads to be connected. In case of invalid card is swiped, the system is deactivated for 60 seconds. The kit will be provided with a RFID reader module, Master kit module, and two valid RFID cards.

Good luck

Re: RF ID technology

Hi mitgrace!
I got a doubt most of the systems operate at 13.56MHz frequency and are very high power units, is it won't interfere with it, could any one spare the knowledge

rgds
__sree