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20-pin FFC adapter for Yoggie

I ordered this adapter from DIY-Beamer. It should help me connect to the SOHO 20-pin consle port. Also hoping that Yoggie publishes the pinout as they promised.

This entry was posted on November 27, 2008, 4:22 pm and is filed under Embedded Linux. You can follow any responses to this entry through RSS 2.0. You can leave a response, or trackback from your own site.

  1. #1 by binjinx on November 28, 2008 - 4:39 pm

    Post any pictures of your naked yoggie ??

    Reply

  2. #2 by txlab on November 28, 2008 - 7:03 pm

    nah, too lazy. It’s just a PCB with some chips on it 🙂

    Reply

  3. #3 by bzachar on December 23, 2008 - 9:43 am

    Hello!

    I think your link is wrong, because it links to the 50 pin FFC cable…
    The right link is:
    http://diy-beamer.com/product_info.php?products_id=78&XTCsid=6703caa4b5d7d28dd837a94f39d29dee

    Regards,
    bzachar

    Reply

  4. #4 by txlab on December 23, 2008 - 9:51 am

    Thanks bzachar. Anyway this adapter is quite too small for soldering. I managed to attach the console wires, but JTAG wiring will be quite a challenge. I’ll try to solder the wires directly onto the FFC cable…

    Reply

  5. #5 by bzachar on December 23, 2008 - 11:30 am

    But I see in your post in the yoggie’s forum you are already use the serial connection:
    http://www.yoggie.com/forum/viewtopic.php?t=200

    How can you do that if you can’t use your cable?

    Another:
    If I right, If I make a kernel which can’t boot I can’t do anything, am I right?
    (Because we can’t stop the boot process to use another kernel)

    Thanks,
    bzachar

    Reply

  6. #6 by txlab on December 23, 2008 - 11:50 am

    I connected to UART1 using that adapter from DIY-BEAMER. But JTAG connection requires much more wires, and it’s too difficult to solder them on this small adapter.

    With a JTAG interface, you can re-write the whole flash, exchange the bootloader and do almost everything 🙂

    Reply

  7. #7 by bzachar on December 23, 2008 - 12:22 pm

    Sorry for my ignorance. I am very new in the embedded world (I am a LINUX system administrator) so I didn’t know what is JTAG now 🙂 , but I am study hard now!
    I am reading the book which you advise in the forum:
    Building Embedded Linux Systems from O’REILLY

    I wrote an email to the farnell.com to how can I use his FFC cable’s wires… If I found a solution I will post here and in the forum…

    Regards,
    Balázs Zachár

    Reply

  8. #8 by txlab on December 23, 2008 - 12:35 pm

    I’m also quite new to electronics, and I come from Networking/UNIX background.
    I don’t think Farnell would tell you much… you have to use google, there’s a lot of information around.

    Reply

  9. #9 by bzachar on December 23, 2008 - 5:52 pm

    I got the answer from farnell:

    They advise two connector type to me:
    first and maybe the solution:
    http://hu.farnell.com/molex/52746-2070/socket-ffc-fpc-zif-0-5mm-20way/dp/9786350

    second:
    http://hu.farnell.com/omron-electronic-components/xf2m20151a/connector-fpc-zif-0-5mm-20way/dp/1112558

    What is your opinion?

    regards,
    Balázs

    Reply

  10. #10 by txlab on December 23, 2008 - 7:35 pm

    Balázs, they are both good if you solder them onto a PCB. I’m not skilled to make a PCB at home, and neither seem you 🙂
    Honestly, I don’t know yet how to use this FFC thing properly. I’ve got the Amonteg JTAG adapter, and somehow I need to connect it to that FFC soket…

    Reply

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