Waived my card over my Arduino Powered SM130 RFID reader to see what it would say..
Student Card: Mifare 1K(2) : 2ADEXXXX
Barclay Card: Unknown Tag(FF) : 09A1XXXX
It’s compatible with the usual RFID standards to some degree, enough to give the same serial number every time, unlike my passport which randomises its ID each activation, but not surprisingly it doesn’t read on my basic reader, probably a more advanced one would get further..
#1 by Marta on March 25, 2011 - 3:00 pm
Hello!
I’m quite new with Arduino and RFID but I have to make SM130 work for my final exam.. I wired the components as you show in your picture, and I used this sketch from Marcboon http://trac.mediamatic.nl/devcamps/wiki/RfiDuino
(bottom of the page, “rfiduino.pde”).
But it’s not fully working: sometimes the serial monitor reports “Unknown tag: FF FF FF FF…” , sometimes the serial doesn’t work at all!
The RFID module and antenna are working, because I’ve got a LED blinking when a tag is detected, but no way to have the tag number on the serial monitor.
Could you please help me?
Thanks in advance
Marta
#2 by darkskiez on March 26, 2011 - 12:14 am
Sorry, I’ve not had that problem, the serial not working at all could be down to your os on your lappy, or issues with you hotplugging the duino whilst it’s running, tried it on a mac or linux ?
The unknown tag thing, I assume its when you’re presenting a valid tag.. I could only suggest getting a logic analyser hooked up, even a cheapie like the bus pirate, and see if the duino is getting sensible i2c decodes, even a scope might help tell you if the traces look reasonable.