[sdiy] Breadboards

[megaohm]

On 1/1/06, harrybissell <harrybissell at prodigy.net> wrote:
>
> Why I don't use breadboards - by H^) harry
>
>
> He got a commercial prospect to come and see the design. Of course the
> solderless breadboard chose that time to fail.



His mistake was not committing the circuit to perfboard before he met with
the commercial interest

2) Long leads : make adding effective bypass capacitors close to a chip,
> difficult.



This is easy for dual opamps with power at pins 4 and 8. Just use a jumper
from ground to the row above pin 8 and below pin 4. The long leads from the
cap? Clip 'em.

I'm working with a professor at the Art Institute of Chicago and he hates
breadboards. I couldn't understand why until I tried one there. They are old
and abused. New breadboards don't give me those problems.

A 23 year old breadboard!? Wow. I never guessed they could last so long.
When my boards (I have a bunch) develop bad tracks, are hard to insert
components, or are melted(!) , I just spend five bucks for a new one.

I can see some circuits would suffer badly from the capacitance, but this
has happened very seldom (for me at least).

I learned to always breadboard first from being disappointed by the
component and/or feature choice for some (most) purchased pcbs. In fact, now
I would never build a circuit, no matter who it was from, without building
it on breadboard and testing/tweaking/experimenting with it first. By the
time I'm finished with that, I usually don't want to use the pcb anymore
because the circuit might have changed (evolved/devolved) to such a point
that the pcb doesn't help much (for finished circuits, I'm a perfboard kind
of guy).

The breadboard is/can be so fast. Instant gratification. Someone posted a
heads-up yesterday on a newer Ken Stone design: Slope Detector. In a half
hour it was on the breadboard and being tested. It does have a problem which
may be caused by a bad connection on the breadboard. First step after the
usual checking for user mistakes is to rebuild it on another board (no
problem for such a simple circuit). Obviously for bigger circuits this can
be a chore. But this is my school and my educational process.

That's my 2cents,
peng

http://home.comcast.net/~peng5002/mainpage.htm
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