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RFID Reader 125kHz

 
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Jody



Joined: 08 Sep 2006
Posts: 182

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RFID Reader 125kHz
PostPosted: Fri Mar 04, 2011 9:55 am     Reply with quote

Hello,

I have the following RFID reader:
http://www.priority1design.com.au/rfidread-mrw.pdf

And connected to a pic's serial port.

But I am not sure if I connected it right.
The RFID module pin 8 VDD (+5V) and pin 7(GND).
pin 5 and pin6 to the PIC.
But even when I connect the oscilloscope I can't see anything happening.

Could someone please give me a hint???? I am totally clueless.


Regards,
Jody
temtronic



Joined: 01 Jul 2010
Posts: 9245
Location: Greensville,Ontario

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PostPosted: Sat Mar 05, 2011 2:31 pm     Reply with quote

Why not first hook it up to a PC and use their software for testing it? Get familiar with it, be sure it works.
Then try it on a PIC. Be aware you'll need a 'max232' chip to talk to the PC but NOT to the PIC( that's from the dotPDF you link to in the OP).
For any real help here, you'll have to give us a short,compilable program along with the PIC type and version of C compiler.
gpsmikey



Joined: 16 Nov 2010
Posts: 588
Location: Kirkland, WA

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PostPosted: Sun Mar 06, 2011 12:11 am     Reply with quote

You did check your connections (and note that the connection diagram in the file you linked to is a TOP view of the chip?). Try testing it with just the power and ground hooked up and viewing with the scope (to eliminate the possibility that the PIC is driving the data out pin to ground).

mikey
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mikey
-- you can't have too many gadgets or too much disk space !
old engineering saying: 1+1 = 3 for sufficiently large values of 1 or small values of 3
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