[sdiy] breadboard

[Happy Harry]

LOL !!!

Tom, you know me too well. ;^)

I just remember an IMPORTANT circuit... in college. When it came
time for the demo, the other engineer (who had built the
proto on solderless breadboard) had to sit there while the
potential customer watched... and he fiddled with the wires and
said "Just one more minute... it works... it was just working...
its just a loose wire...somewhere... no wait... I'll get it...
(loop to start of quote)"

Needless to say... the potential customer got bored in five minutes
and went away... never to return.

So my point is... as a toy go ahead with a solderless breadboard.
When you are ready to commit... then build a real unit using whatever
construction (other than solderless) you prefer. Some like to etch
a board.. some like solder pad boards (I've done some good work with those 
as well)... or use the technique I proposed.

As far as SPICE is concerned... I like it a lot. It will often show that a 
circuit will NOT work as intended. It will sometimes report
that a circuit that really WILL work in real life will not work.
When that happened to me... after a few days I built it anyway to
prove the simulation wrong (it DID work) !

Tom hits the nail on the head... there is NO SUBSTITUTE for a real
prototype. But solderless breadboards are low on my list of ways to
achieve that. Actual results may vary....

(not like the BBD's.... ;^)

H^) harry


>From: "tomg at efm" <efm3 at mediaone.net>
>To: "harry" <harrybissell at prodigy.net>, "patchell" <patchell at silcom.com>
>CC: "alex dickey" <perpetual at uswest.net>, <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] breadboard
>Date: Thu, 13 Sep 2001 03:06:51 -0400
>
>This is important! If you can't build something that works
>you will get frustrated and quit.
>
>This is not exactly what Harry is talking about. It's point to
>point, using terminal pins to connect external wires to the
>board. It's an easy project that you can develop your
>skills on.....it's a handful of noise.
>
>http://people.atl.mediaone.net/efm3/therman.pdf
>http://people.atl.mediaone.net/efm3/therman.mp3
>
>It's not just for small things. You can develop larger stuff....
>
>http://people.atl.mediaone.net/efm3/mini4.pdf
>http://people.atl.mediaone.net/efm3/mini4.mp3
>
>uhhh.... working , larger stuff of course...;-) Ahh the old
>days....I had a really great junk box back then..
>
>I totally disagree with Harry about "solderless breadboards"
>and he knows it...;-) I hardly ever say you shouldn't listen
>to Harry but you should think about a couple of point.
>
>When you are new and your skills and budget are limited
>you can collect a few parts and experiment on different stuff
>until you feel confident that you can move it to perf board.
>You can use the same parts over and over ...at no additional
>cost. Once clipped and soldered it's hard to experiment with
>different values not to mention pretty much unrecoverable.
>
>You don't need to understand or use spice software, that so
>far doesn't have audio output or working ota models (unless
>you want to and can define them yourself) makes it fairly
>useless for DIY beginners. If it gets hot or smokes you know
>you've done something wrong with parts.....Spice is ok once
>you know what you're doing....nothing beats real parts.. ever.
>
>Tom
>
>
>
> > Yes thanks. Thats it all rightey !!!
> >
> > H^) harry  (no camera... so sad)
> >
> > patchell wrote:
> >
> > > http://www.oldcrows.net/~patchell/archives/vcf.html
> > >
> > >     This is probably pretty close to what Harry is talking about.  It 
>was built
>with
> > > T-42 terminals on a Vector 4.5 x 6.5 inch board with edge connector 
>fingers.
> > >
> > >     I have build lots of stuff using the technique; here is another 
>rather large
> > > one, but I never finished it...
> > >
> > > http://www.silcom.com/~patchell/pictures/monosynth.jpg
> > >
> > > alex dickey wrote:
> > >
> > > > > I use unclad perf board (vector board) with T-42 push in 
>terminals... and
> > > > > when I'm done (unless it gets too big...) it can go right from the
>development
> > > > > bench into a box to be used on the road for the next twenty 
>years... which
> > > > > the solderless breadboard cannot do.
> > > > >
> > > > > OTOH those terminals cost $.04 each... in thousands. But they 
>allow as much
> > > > > re-soldering as you can stand... perfect for trying out new 
>values.
> > > > > If you leave the leads a little long you can reuse components just 
>as easily.
> > > > >
> > > >
> > > > can you say more about this?  not sure i understand the concept.  
>links?
> > > >
> > > > alex
> > > > --
> > > > http://www.geocities.com/aurelialuz
> > >
> > > --
> > >  -Jim
> > > ------------------------------------------------
> > > * Visit:http://www.silcom.com/~patchell/
> > > *-----------------------------------------------
> > > *I'm sure glad Merry Christmas comes just once a year
> > > * -Yogi Yorgensen
> > > ------------------------------------------------
> >
>


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