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I have the following board and I need to convert the 2 row 40 pin female header to screw terminal blocks. The pitch is 2.54 mm both horizontally and vertically. I've looked at ones such as this https://www.sparkfun.com/products/10571, but I was wondering if there was a 2 row solution somewhere out there?

I've been searching for a couple of days and any pointers would be helpful. Here's the board:

enter image description here

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    \$\begingroup\$ Why would you want to do this? I can think of very few applications where a device which is supplied wth a 0.1" pin header/socket fits into a application where screw terminals are used. \$\endgroup\$
    – Connor Wolf
    Commented Aug 9, 2013 at 4:08
  • \$\begingroup\$ I'm looking for a way to form a robust connection between this board and a micro-controller, but I want to avoid soldering. If there's anything besides screw terminals, I'm open to suggestions. \$\endgroup\$
    – yz10
    Commented Aug 9, 2013 at 16:34

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You could make an adapter board which would have

  • male pins to mate with your existing 2x20 female
  • screw terminals of any style you like
  • mounting holes, which match the mounting holes on your motherboard. This would make the construction more robust.
  • other components of your design

I haven't seen screw terminal with the right pitch to mate with (or replace) your female 2x20 connector. I doubt that such screw terminal connector exists.

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  • \$\begingroup\$ How hard would this be to do given I'm a complete newbie to this? (just learned how to solder last week). And if I only need to use about 6 out of the 40 pins, is there anything that can form a robust wire connection to a micro-controller besides a screw terminal? \$\endgroup\$
    – yz10
    Commented Aug 9, 2013 at 16:46
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What you are after is something like this:

IDC Breakout

It is called an IDC breakout board, and can be found in quite a few places, including the usual Chinese sources

To connect the female end of the cable to the one on the board you can just use a wirewrap male header, which has long enough terminals to connect into both plugs. With a bit of luck, you might be able to plug your board directly into the breakout board.

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