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Last forum activity on RFID emulator:

             

Last comments:

  • more...
    06.04.17 20:22
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    29.03.17 21:57
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    25.01.17 20:32
Files for download (PDF)

( 34 Votes )

 

  • Schematic
  • Board
  • Parts List
  • Software
  •  

    Schematic

    Download in PDF

     

     

    Board

     

             Top side of the board                       Bottom side of the board (mirrored) 

      

          Download in PDF                                               Download in PDF

     

    Top side of the board with white mask               Bottom side of the board with white print

      

         Download in PDF                                               Download in PDF

    If you make own board should ensure that that the resonance in the freewheeling circuit depends on the capacitor C4. But as with any board would look different (different thickness slopes depending on the time of etching) you should measure the inductance you receive and comply with this capacitor. I use 3.3nF capacitor instead 8.2 nF like in calculations.

     

    Parts List

    Description

    Element

    R1

    33 Kohms resistor. 1206 SMD package

    R2,R6

    10K. 1206 SMD package

    R3

    100 ohms. 1026 SMD package

    R4

    470 ohms. 1206 SMD package

    R5,R7

    1K. 1206 SMD package

    C1

    1.8 nF ceramic capacitor. Axial package

    C2

    100nF 50V X7R ceramic capacitor. 1206 SMD package

    C3

    22uF 6.3V tantalum capacitor. "A" SMD case

    C4*

    8.2nF 50V X7R ceramic capacitor. 1206 SMD package

    C5

    1 nF ceramic capacitor. 1206 SMD package

    C6

    220uF 16V electrolytic capacitor. 6.3mm SMD case

    C7

    , 10 nF ceramic capacitor. 1206 SMD package

    C8,C9

    22nF 50V X7R ceramic capacitor. 1206 SMD package

    D1,D2

    BAT721S dual Schottky diode. SOT23 package

    D3

    5.1V Zenner diode, 0.5W. SOD-80C case

    D4

    1N4148 signal diode

    LED

    Yellow LED. 1206 SMD package

    SW1,SW2

    Tactile SPNO Switch, TYCO, SMD package

    T1

    BC846. SOT23 package

    U1

    PIC12F683. SOIC8 package

    5 pin header

    Download in PDF

    *If you make own board should ensure that that the resonance in the freewheeling circuit depends on the capacitor C4. But as with any board would look different (different thickness slopes depending on the time of etching) you should measure the inductance you receive and comply with this capacitor. I use 3.3nF capacitor instead 8.2 nF like in calculations.

     

    Software

     

                    Source code � Source code which you can change or experimenting of your choice

                    MPLAB IDE � Software from Microchip to modify and compile the source code

                    HEX file � compiled .HEX file ready to program

    The password for all archives in the article is: www.kukata86.com

     

     

     

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