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RFID Access ZoneAuthor
Panagiotis Kalogeris
April 12, 2012

Hello to pcbheaven's readers once more!!!!!
In the following pages i will present you an RFID reader connected to a pic microcontroller.
The pic microcontroller is the pic16LF1939 from microchip and the Rfid reader is the MiniProx 5365 from HID global Secure Identity Solutions.Their datasheets are able to be downloaded from here and here.

The pic runs at 16mhz internal clock speed and the oscillation frequency of the Rfid reader is at 125mhz.
The communication between the pic and the reader is accomplished through the wiegand protocol.
I will provide extra info of how this protocol works on the reference section.

The circuit running on a breadboard

In the photo to the right you see the circuit on a breadboard.In a few days i will upload the video and a small pcb with smd components i did for the project.

Here's the video with the circuit in action.....


   Continue reading. Click here to view the worklog.



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  • At 26 May 2013, 20:07:12 user atakan wrote:   [reply @ atakan]
    • @Panagiotis Kalogeris hello, thank you. To walk out of here if I'd share. Maybe those will help a step further.

  • At 22 May 2013, 12:18:38 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]
    • Yes of course but the only limitation is that the reader should support "Wiegand protocol" since the pic's firmware was built to support wiegand protocol.
      HID has another one type of reader where it's called clock and data interface but i haven't looked at it to tell you how it works....

      look to the link below second line....


      *Available with Wiegand or Clock-and-Data interface.

  • At 21 May 2013, 21:02:20 user Atakan wrote:   [reply @ Atakan]
    • I saw. I apologize for that. References used in the sense of our language tool. That's why I did not notice. I apologize again for that.

      I want to ask one more thing. Is it possible to use as an alternative to other rfid module?

  • At 21 May 2013, 8:13:15 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]

      (Most readers at least two brands i know have same cable color code)

      You will need 4 wires
      = RED
      - = BLACK
      data0 = GREEN
      data1 = WHITE

      the reader has the pinout behind of it.The other cables are used to control the front indicator led, the buzzer, the hold function etc


  • At 19 May 2013, 21:06:31 user Atakan wrote:   [reply @ Atakan]
    • Thank you for your response. reader found on ebay. Can you give information about which color to connect the cables, which end?

  • At 18 May 2013, 23:38:00 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]
    • Hello Atakan did you checked the reference section? (Its Below main label 3rd tab...You will find Some important info there...)
      I don't know what circuit has the reader on it....Perhaps you should contact HID for further assistance on the particular reader.....

      Regards Panagiotis

  • At 16 May 2013, 22:43:42 user Atakan wrote:   [reply @ Atakan]
    • Hello, I am a student. Required to be done in this thesis project. However, I do not know enough. I want to use your project. Can you give me information about the used RFID reader? If possible, could you give extensive information by e-mail?

      Thank you. Respect for labor.

  • At 29 December 2012, 14:22:55 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]
    • Hello Egzon!.Well right now the firmware that i have uploaded to the site has the ability to erase the whole eeprom (and the 5 positions).But i am working on a new firmware where you will select the card that you want to erase...and some new features including the bug that i didn't thought where hectrap told me... :-)

  • At 28 December 2012, 7:56:41 user Egzon Mulaj wrote:   [reply @ Egzon Mulaj]
    • can we erase a sector of eeprom and write to another sector of eeprom ?

  • At 8 June 2012, 20:48:14 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]
    • No you will have to re-erase the eeprom and then store again the cards you want.Nice observation though...i will make the correction to the new firmware :-)

  • At 8 June 2012, 20:38:19 user Giorgos Lazaridis wrote:   [reply @ Giorgos Lazaridis]
    • @herctrap you little devil :D :D :D

  • At 8 June 2012, 20:20:02 user herctrap wrote:   [reply @ herctrap]
    • If i erase the eeprom
      and then add 5 times the card "1"
      then i will be able to enter a new card?

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