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Solderless breadboard suggestions

Discussion in 'Electronic Design' started by Bora, Nov 5, 2003.

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  1. Bora

    Bora Guest

    Could anyone suggest a qood quality solderless breadboard with enough size
    for small microprocessor (8051, PIC) applications. I did a Google search
    but I can't tell which one is better?

    Thanks
    Bora
     
  2. Check It Out

    Check It Out Guest

    Depends on what your doing. Hobby or design. For hobby, elexp.com will have
    a big enough, good enough one.

    For design work, I don't like them at all. I solder. For most stuff, I put
    out an initial design on paper, route it, then get a proto pcb made. For the
    $25 and under price for these one-offs, why bother with anything else,
    especially with the speed you get them at 1-5 days easy.
     
  3. René

    René Guest

    FWIW. 0.1" patch Montaprint is perfect for troughole components as
    well as 0805 SMT.
    I would place the DIL type chip(s) on a socket, and peripheral parts
    in SMT. Some parts can be added *under* the chips - such as 100 nF SMD
    HF block caps.

    I am presently doing such a thing with an AVR Mega8, it builds very
    compact, and the proto is solid enough to be used as a prototype.

    Breadboards with intermittent contacts etc - not for me.

    But YMMV...
     
  4. pkh

    pkh Guest

    Try Jameco. I still have 3 of their large breadboards from my college
    days. I've made lot's of cool stuff on those for school and hobby. Go to
    www.jameco.com and type "breadboard" in the search window.

    You may also want to consider wirewrap proto boards too, depending on
    your clock/signal/data frequencies and number of ICs for your project. I
    just got a proto board with holes and IC sockets with wire wrap posts,
    to fit my ICs. Plug your ICs into the sockets, stick the sockets in the
    board, and point to point wire-wrap connect them. Electric wire wrap
    guns cost $$$ but, manual wrapping tools are cheap.

    Regards,

    Paul
     
  5. JeffM

    JeffM Guest

    Bora
    Soldering to a plated-thru perf board may be an option for you,
    but all the capacitance of the Proto Board(TM) stuff is A Bad Thing(TM).
     
  6. DocBrown

    DocBrown Guest

    Hi Bora,

    Take a look at http://www.onepasinc.com they have some proto boards
    that are remarkable (My opinion). I also noticed that Forrest Mimms
    recomends them strongly.

    Best of luck, Doc
     
  7. LameDuck

    LameDuck Guest

    Actually, any breadboard, with sufficient
    real-estate should work. I've done allot of
    work using Radio Shack breadboards and not
    had any problems to speak of. More important
    than the breadboard is the layout of the
    circuitry itself. There are also issues of
    cross-talk and current leakage between the
    connecting clips. If you keep the frequencies
    within reason, you should have no problems.
    If you're combining micro-power analog
    circuitry within the test area, use caution
    as the measured parameters may differ from
    those of a finished printed circuit layout.
    This phenomena is usually the result of
    leakage. When I start a layout, I use
    dummy dip sockets in place of the actual
    components. Then I lay down a network of
    wires for the grounding. Each ground pin
    should have at least two connections to the
    ground strip. Next, balance the positive
    (and negative?) potential with an amount of
    connections that you gave to the grounding.
    This simple technique will ensure that your
    circuitry has a low impedance power feed.
    Finish off this preparatory phase with some
    "dot-oh-one" decoupling capacitors at each
    of the positive potential pins and a few
    twenty-five uF tantalums between each of
    the power rails. These capacitors should
    reduce any coupling (noise) between the
    chip-components. The secret to good
    breadboarding is the use of lots of
    redundant ground connections. You don't
    want to go overboard, but simply to fool
    the breadboard into thinking...it's not one!
    Of course, when you get done interconnecting
    your building blocks, make sure you 'mush'
    the wires down, flat against the breadboard.
    This reduces intermittent wire connections...

    Hope this helps!
     
  8. This is rather interesting-looking stuff!

    I still have the pages loading, so haven't gotten to the parts about pricing,
    etc. Nor am I clear as to how well this would work with digital chips, etc.
    though perhaps a bit more browsing might prove informative...
     
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