Wiegand data and com port

[markocosic]

Hi!

I'm trying to read RFID tags using an HID Corp reader (the OEM150), store the ID numbers of the RIFD tags that get read (up to 12 of them) on the microcontroller, transmit the ID numbers of the RFID tags in memory via 'one-way-RS232' to another device then reset the reader ready to scan more RFID tags. The device doesn't need to 'scan' and 'transmit' at the same time.

(its something to be used on a 'treasure hunt' of sorts and needs to communicate via RS232)

Would a PIC12F629 be able to do this? Could your code be adapted? I'm a mechanical engineer that knows enough about PICs to flash LEDs but that's about the limit at the moment!

Thanks,

Marko

[Felch]

Yes, i guess that the code could be adapted. You only have to write a routine for storing numbers in EEPROM. Only thing that might get disturbing is PIC's oscillator frequency deviation due to temperature. It might affect RS232. Test it before hunting real treasures .)

[markocosic]

Good warning on the temperature variation - a larger pic and external xtal (or something like a 16F88 with internal crystal/more acpability than is needed?) might be required.

I don't suppose you could re-post the 12XXXX IC code could you (my email is mac65 <at> cam.ac.uk if you'd prefer to send it by mail) as the web-links above are broken.

Thanks,

--
Marko (working his way through the PIC instruction sets as bed-time reading!)

[Ioannis]

Hi.

I have found 2 samples of RFID Readers that have Wiegand and iButton format at the same time! Anyways, with their Control Panel they claim that readers can be 150 meters away.

Did anyone try any circuit to interface such readers with a PIC, with more than a few cm cable? I'd like to put them away.

I just hope that narrow pulses could travel through the long cabling.

Ioannis