On 9/7/2012 12:48 PM, Bob Blick wrote: > On Fri, Sep 7, 2012, at 09:18 AM, Peter Johansson wrote: >> On Fri, Sep 7, 2012 at 12:16 AM, Bob Blick wrote: >> >>> I have one of these, it totally rocks: >>> >>> http://www.sureflap.com/ >> I am even more impressed that it is only slightly more expensive than >> traditional units! >> >> Nonetheless, can anyone recommend an RFID reader circuit appropriate >> for scanning pet microchips? > You might try one of these: > > http://www.seeedstudio.com/depot/electronic-brick-125khz-rfid-card-reader= -p-702.html?cPath=3D48_52 > > I have an earlier version bought from them that works with pet > microchips, perhaps this new version will also work. If it doesn't then > it's only the firmware, you could do your own decoding with a PIC. > > Cheers, > > Bob > Microchip has quite a comprehensive 125 khz rfid systen design guide here: http://ww1.microchip.com/downloads/en/DeviceDoc/51115F.pdf There is a reader circuit and code towards the end. Joe W --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .