Re: [Discuss-gnuradio] USRP and RFID
Hi! Thanks a lot Matthias for your answer! I had a close look at the Gen2 stuff and it sounds rather promising although they are working with UHF tags. As far as my project is concerned I will start with some basic experiments the next days: First of all, I just want see whether the general system works as expected (using usrp_fft.py, usrp_oscope.py, etc.) when emitting a continuous sine wave at 13.56Mhz and receiving the subcarrier signal afterwards. If this yields the expected results, I will let you know and take care of the modulation & demodulation thing then. Cheers, Fabian > Hi, > > there is a project for Gen2 RFID chips, they have a reader implementation > for the USRP1 and a monitoring tool to eavesdrop on reader-tag > communication for the USRP2: > https://www.cgran.org/wiki/Gen2 > > There are also papers on the design posted there. They had to tinker with > the USB driver as well because of timing issues with the reader. > > I think Gen2 is only ~868MHz, I don't know if the code can be adapted to > 13.56MHz stuff. And for a (duplex) reader you will need a URSP1 there, > because two 900-daughterboards are required. It may be possible out of the > box to build a reader for 13.56MHz with the USRP2, as you have two > "half"-daughterboards. > > For the protocol implementation, you can take a look at > http://www.libnfc.org > it seems that they have some Gen1 support and you only have to implement > the physical layer in gnuradio. > > We are currently thinking to start a RFID project as well, so I'm > interested what you find out. > > Matthias > > > Am 25.08.2010 um 16:38 schrieb r...@fabis-site.net: > >> Hello! >> >> We are just working on a project aiming at investigating the use of the >> Ettus USRP device concerning RFID sniffing. According to the manuals, >> purchasing the LFTX and the RFTX devices should be suitable for being >> able >> to talk to 125kHz and 13,56Mhz RFID devices. What kind of antennas do >> you >> recommend for this purpose? Will simple loops of copper suffice? >> >> Are there any tutorials or papers available which concentrate on using >> Gnuradio in terms of RFID? I know that OpenPCD & Co might offer an >> easier >> way to go, but as I want to learn about the stuff I decided to go the >> more >> difficult way. >> >> Thanks for your help any kind of comment, >> Fabian Steiner > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP and RFID
Hi, there is a project for Gen2 RFID chips, they have a reader implementation for the USRP1 and a monitoring tool to eavesdrop on reader-tag communication for the USRP2: https://www.cgran.org/wiki/Gen2 There are also papers on the design posted there. They had to tinker with the USB driver as well because of timing issues with the reader. I think Gen2 is only ~868MHz, I don't know if the code can be adapted to 13.56MHz stuff. And for a (duplex) reader you will need a URSP1 there, because two 900-daughterboards are required. It may be possible out of the box to build a reader for 13.56MHz with the USRP2, as you have two "half"-daughterboards. For the protocol implementation, you can take a look at http://www.libnfc.org it seems that they have some Gen1 support and you only have to implement the physical layer in gnuradio. We are currently thinking to start a RFID project as well, so I'm interested what you find out. Matthias Am 25.08.2010 um 16:38 schrieb r...@fabis-site.net: > Hello! > > We are just working on a project aiming at investigating the use of the > Ettus USRP device concerning RFID sniffing. According to the manuals, > purchasing the LFTX and the RFTX devices should be suitable for being able > to talk to 125kHz and 13,56Mhz RFID devices. What kind of antennas do you > recommend for this purpose? Will simple loops of copper suffice? > > Are there any tutorials or papers available which concentrate on using > Gnuradio in terms of RFID? I know that OpenPCD & Co might offer an easier > way to go, but as I want to learn about the stuff I decided to go the more > difficult way. > > Thanks for your help any kind of comment, > Fabian Steiner ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP and RFID
Hello! We are just working on a project aiming at investigating the use of the Ettus USRP device concerning RFID sniffing. According to the manuals, purchasing the LFTX and the RFTX devices should be suitable for being able to talk to 125kHz and 13,56Mhz RFID devices. What kind of antennas do you recommend for this purpose? Will simple loops of copper suffice? Are there any tutorials or papers available which concentrate on using Gnuradio in terms of RFID? I know that OpenPCD & Co might offer an easier way to go, but as I want to learn about the stuff I decided to go the more difficult way. Thanks for your help any kind of comment, Fabian Steiner ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
