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RFID COLLEGE I-CARD

Posted: Fri Mar 15, 2013 4:46 am
by Pri
Hello!

Pyro has helped me before also to do my project and now again I'm looking for help..:)

I want to design a RFID sensor that senses the college ID(RFID card-Passive ,125khz frequency) and will keep a track of attendance of students stored in the server(I.e my computer)
Want to use atmega 32 as the college demands it.

Help will be most appreciated!
Thanking you in advance :)

Re: RFID COLLEGE I-CARD

Posted: Sun Mar 17, 2013 5:57 pm
by ThePyroElectro
Pri wrote:Hello!

Pyro has helped me before also to do my project and now again I'm looking for help..:)

I want to design a RFID sensor that senses the college ID(RFID card-Passive ,125khz frequency) and will keep a track of attendance of students stored in the server(I.e my computer)
Want to use atmega 32 as the college demands it.

Help will be most appreciated!
Thanking you in advance :)


You can use a peripheral controlled by your ATMEGA:
http://microcontrollershop.com/default.php?cPath=297_430

Or

You could build the RF circuitry yourself. It really depends of the level of design that you are looking to do. 125 KHz transmission isn't painful to prototype but it takes a lot more effort to build the RFID circuitry yourself...

Re: RFID COLLEGE I-CARD

Posted: Mon Mar 25, 2013 2:43 pm
by Pri
Yea I have to design it myself using atmega... I can't find information anywhere regarding the proper circuit or working... Please help!!!

Re: RFID COLLEGE I-CARD

Posted: Tue Mar 26, 2013 4:15 pm
by ThePyroElectro
Pri wrote:Yea I have to design it myself using atmega... I can't find information anywhere regarding the proper circuit or working... Please help!!!


There are MANY examples on the internet of this used with ATmega.

Here's one well documented example that I blogged about before:
https://instruct1.cit.cornell.edu/Courses/ee476/FinalProjects/s2006/cjr37/Website/index.htm