Ribbon cable for larger connector

Discussion in 'General Electronics Chat' started by Bofo, Jul 17, 2012.

  1. Bofo

    Thread Starter New Member

    Jul 17, 2012
    2
    0
    Hello,

    I would like to connect an STM32F4 board -- which has two 50-pin (2x25) connectors -- to another home-made board. I only need access to about 10-12 of those 100 pins. I'd like to use 2-3 small ribbon connectors to do the job, but all of the ribbon connectors that I am seeing online have ends that are too "thick". In other words, the ends of the connector will not fit in between the pins that I am using and the pins that I am not using. I'd rather not cut the unused pins on the STM, so I can use it for other projects as well.

    I am hoping that someone can point me in the right direction to find a cable that will fit.

    Thank you.

    -Bob
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Is that .1 inch center-center on those pins?
    Off the shelf el-cheapo female jumper wires should fit if so..
     
  3. Bofo

    Thread Starter New Member

    Jul 17, 2012
    2
    0
    Yes mcgyvr, 0.1 inch. I thought of that -- in fact the prototype uses a bunch of jumpers right now. I will probably do it if I can't find a better solution.

    Thanks.

    -Bob F.
     
  4. PackratKing

    Well-Known Member

    Jul 13, 2008
    850
    215
    I keep a conservative :p number of ribbon cables, all sizes lengths and pin spacing........hawked out of anything that has them, mainly for the connectors - both genders --

    I must admit harvesting them can sometimes be a chore, tho' it sounds like it might fit your bill.........
     
  5. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,769
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    well which pins do you need.. Are they right next to each other so a ribbon cable will work? If not a discrete wiring solution is needed not ribbon.
     
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