Make a Simple Nonbuffered FTA JTAG Cable

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10 PCS, 10cm x 10cm, 2 layers prototype for $38.80 shipped!








Buy various JTAG cables for your Satellite Receiver, Cable Modem, Wireless Router, Standard Wiggler from http://www.easymg.com and http://www.diygadget.com

Make a Simple Nonbuffered JTAG Cable

  1. Simple JTAG Schematic
    0.jpg
  2. Familiar with all the components.
    1.jpg
  3. Put some melted solder into the cup 2, 3, 4, 5, 13, and 18 to 25 of the DB25 male connector as shown in picture.
    3.jpg
  4. Cut the rest resistors as shown in picture.
    5.jpg
  5. Use the cutted resistor conductor to connect 18-25 pin together.
    4.jpg
  6. Solder 5 resistors onto the DB25 connector (pin 2,3,4,5 and 13).
    6.jpg
  7. Cut the resistor conductors as shown in picture and put some melted solder onto the bare conductors.
    8.jpg
  8. (10 pin configuration) Cut and strip the flat cable as shown, put some melted solder onto the bare wires, then put the heat shrink tube onto the wires.
    11.jpg
  9. [[Image:|none|thumb|]]
  10. (20 pin configuration) Cut and strip the flat cable as shown, put some melted solder onto the bare wires, then put the heat shrink tube onto the wires.
    12.jpg
  11. (10 pin configuration) Solder flat cable onto the DB25 connector as shown in picture.
    13.jpg
  12. (20 pin configuration) Solder flat cable onto the DB25 connector as shown in picture.
    14.jpg
  13. (10 pin configuration) Put heat shrink tubes onto the resistors to prevent short circuit.
    15.jpg
  14. (20 pin configuration) Put heat shrink tubes onto the resistors to prevent short circuit.
    16.jpg
  15. Align wires on the IDC connector. Make sure line 1 is under the little triangle as shown in the picture. Then squeeze two halves of the IDC connector together until both retainer loops snap over the ribs and lie flat against the sides.
    17.jpg
    18.jpg
  16. Put the strain relief onto the IDC connector. Squeeze the strain relief and the IDC connector.
    19.jpg
    20.jpg
  17. Prepare the DB25 shell as shown in picture.
    21.jpg
  18. Take the two wire holders and clamp them onto the cable. Pay attention to red arrow in the picture.
    22.jpg
    23.jpg
  19. Put the DB25 connector into one half of the DB shell.
    24.jpg
  20. Close up the DB25 shell. Use the remaining two screws and nuts to finish the assembling.
    25.jpg
  21. Close up the DB25 shell. Use the remaining two screws and nuts to finish the assembling.
    26.jpg
  22. Congratulations! You are done!
    27.jpg


Buy various JTAG cables for your Satellite Receiver, Cable Modem, Wireless Router, Standard Wiggler from http://www.easymg.com and http://www.diygadget.com



10 PCS, 10cm x 10cm, 2 layers prototype for $38.80 shipped!