I'm proud to introduce the rfid 13.56MHz shield !!
I'm using a serial module for myfare cards communication.
First i needed to create a shied for max232 because the mifare didn't communicate with arduino serial (thanks uwefed for the suggestion). And I used this schematics.
After then i developing a test program, for now when a mifare card is near the module the test led will blink.
The card is an "leNord Itinero", is a ticket for train, and is a mifare 1k card.
I will release other information when all is working well.
Someone is interested to project? any idea of develop? the advantage is form 125khz card is because you can store up to 4kb of data into card divided in few password procetected sectors.
Thanks..
they are a lot of project but all based on 125Khz, and it's a raeadonly rfid.
This type permit you to store data into card and give a stronger security and anti-cloning functionality.
For now i haven't a project to implement it, but they are a lot of variants.
I didn't respond to this post but I did subscribe cos it looks interesting. I am currently trying to find out what frequency ricoh printer toner cartridges are as they have RFID on each one
Free RFID tags!
(but only 4 different ones and I need a reader)
I was also interested in what you are doing, but all I saw was a level shifter. What is the description of the RFID board you are using? I didn't see a link.
(I'm using a module from Omron that is also 13.56MHZ that reads and writes iCODE cards. Do you happen to know if Mifare card could be read?)
This is the data sheet of MIFARE module.
I can also use other modules for: SRIX ICODE
The modules are from an italian reseller, i don't think it send single products worldwide...
Please don't despair, it just takes some of us longer to find the interesting bits of information.
I am VERY interested in what you are doing here and will be following this thread eagerly. I have a need for a cost effective RFID solution using HF or UHF and this seems promising.
What I have discovered so far about RFID is that the readers for low frequency are inexpensive but the tags can be pricey. HF tags, on the other hand, can be quite cheap but the readers are $$.
If this DIY reader can work with the inexpensive RFID label tags then it would be a perfect solution for what I am planning.
I am hoping to see if the Receiver Antenna could be integrated into the base of hte drivers seat, with the RFID tag in, say, a wallet in pants pocket providing driver identity.
Sorry I didn't reply sooner, but I have JUST found a use for RFID... namely in a car to detect "who" is sitting in the driving seat. The ultimate aim is to be able to tailor the interior mood lighting, seat position, window settings (I ALWAYS drive with the window 3" open at least and my wife doesn't) and a few other things (non-critical) car related all controlled via ARduino.
you can get 1-2cm reading distance in free air, nothing more when keeping the transmission power within the legal limits...
but with a lot off power you could get something around 1m
for distance you need UHF tags, they go easily to 5m with a tag the size of a credit card...
D2k2... I'm thinking of an automotive application, where a "chip" is held on the person in something that triggers the immobiliser. Get out of the car, and the car is immobilised (with a 5 minute time delay of course)
The receiver could be hidden anywhere where it's not obvious (under roof lining, etc)
that would be an UHF tag, but the readers are more expensive there... (around 250? for the skyetek m9 for example)
but they are also a lot smarter, quite all can tell you the signal strenght to the tag, what is also related to its distance from the antenna. so you could estimate if you aproach the car or leaving it :