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'[EE] Economical SMT IC prototyping'
2005\12\14@161446 by Mike Hord

picon face
I'd like to play with the FTDI chips, particularly the 2232
(dual port version).  The problem is one of finding a way
to get that onto a perfboard or breadboard.

There's a DIP module with a 2232 on it available, for
~$50US.  I'd prefer just to buy a QFP-> DIP adapter.

Failing that, I'll just go for the regular one-port job, which
can be done in 28-SOIC.  Still having a hard time finding
a fairly cheap 28-SOIC->DIP adapter.

Jameco sells the Bellin Dynamic adapters, but they come
in a sheet of 30 for $45US.  Can I buy just one, somewhere,
for $2-$3?

Mike H.

2005\12\14@163115 by Wouter van Ooijen

face picon face
> There's a DIP module with a 2232 on it available, for
> ~$50US.  I'd prefer just to buy a QFP-> DIP adapter.

http://www.voti.nl/shop/p/K-USB-2-232.html

I did not put the PCB for sale separately, but if you just want 1 email
me your adress.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu


2005\12\14@165404 by alan smith

picon face
I haven't looked at the pitch on these parts...but I am guessing you don't have a microscope to use.  Few things come to mind.  For small pin count parts, I;ve just glued it down and soldered the wires on...tedious but it works.
 
 What about doing a small board and getting those sparkfun or whoever to do it? they seem to be way cheap, run the bunch on a panel each week.  You wouldnt have any holes to drill, just pads.

Mike Hord <spam_OUTmike.hordTakeThisOuTspamgmail.com> wrote:
 I'd like to play with the FTDI chips, particularly the 2232
(dual port version). The problem is one of finding a way
to get that onto a perfboard or breadboard.

There's a DIP module with a 2232 on it available, for
~$50US. I'd prefer just to buy a QFP-> DIP adapter.

Failing that, I'll just go for the regular one-port job, which
can be done in 28-SOIC. Still having a hard time finding
a fairly cheap 28-SOIC->DIP adapter.

Jameco sells the Bellin Dynamic adapters, but they come
in a sheet of 30 for $45US. Can I buy just one, somewhere,
for $2-$3?

Mike H.

2005\12\14@171213 by Mario Mendes Jr.

flavicon
face
I make these myself with a positive exposure kit I bought.  The kit was
close to $120 but I use it to make all of my circuit boards.  The price is
a bit high if all you're going to do is use it to make 1 or 2 of these
adapter boards every so often, but if you make other boards too with some
frequency it may be worth it.

- Mario


{Quote hidden}

> -

2005\12\14@173638 by Juan Cubillo

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face
Ebay


----- Original Message -----
From: "Mike Hord" <.....mike.hordKILLspamspam@spam@gmail.com>
To: "Microcontroller discussion list - Public." <piclistspamKILLspammit.edu>
Sent: Wednesday, December 14, 2005 3:14 PM
Subject: [EE] Economical SMT IC prototyping


{Quote hidden}

> --

2005\12\14@234830 by dal

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face
I'm finding that most if not all the cool new stuff only comes in SMT
anymore anyway.  Why not do some quick and dirty homemade PCB's? You can
make these adapters yourself in a hour or two --especially if you avoid
drilling holes for pins through cunning use of right angle .1" headers.
http://myweb.cableone.net/wheedal/pcb.htm

That said, olimex's USB-Serial converter looks to be FTDI based.  Sparkfun
has it for $24
www.sparkfun.com/shop/index.php?shop=1&cart=504967&match_criteria=all
&rec=&keywords=ftdi&
{Original Message removed}

2005\12\15@113019 by Wayne Topa

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face
dal(.....piclistsrvKILLspamspam.....cableone.net) is reported to have said:
> I'm finding that most if not all the cool new stuff only comes in SMT
> anymore anyway.  Why not do some quick and dirty homemade PCB's? You can
> make these adapters yourself in a hour or two --especially if you avoid
> drilling holes for pins through cunning use of right angle .1" headers.
> http://myweb.cableone.net/wheedal/pcb.htm
>
Connections to the above URL are being refused.  I've been trying that
address for a couple of days now.

Wayne
--
All computers wait at the same speed.
_______________________________________________________

2005\12\15@124559 by Wayne Topa

flavicon
face
Wayne Topa(EraseMElinuxonespam_OUTspamTakeThisOuTintergate.com) is reported to have said:
> dal(piclistsrvspamspam_OUTcableone.net) is reported to have said:
> > I'm finding that most if not all the cool new stuff only comes in SMT
> > anymore anyway.  Why not do some quick and dirty homemade PCB's? You can
> > make these adapters yourself in a hour or two --especially if you avoid
> > drilling holes for pins through cunning use of right angle .1" headers.
> > http://myweb.cableone.net/wheedal/pcb.htm
> >
> Connections to the above URL are being refused.  I've been trying that
> address for a couple of days now.
>
Just tried it again, thanks to David and others, with konqueror, and
It worked.  Tried again with firefox 1.5 and now, it works also.

Thanks guys.
Wayne
--
Why do we want intelligent terminals when there are so many stupid
users?
_______________________________________________________

2005\12\15@171422 by Mike Hord

picon face
On 12/14/05, alan smith <@spam@micro_eng2KILLspamspamyahoo.com> wrote:
> I haven't looked at the pitch on these parts...but I am
> guessing you don't have a microscope to use.

Bad guess. ;-)  I do have a microscope, but I may not need
it.  Usually, a surgeon's loupe is sufficient, or even just a
steady hand and some solder wick.

>For small pin count parts, I;ve just glued it down and
> soldered the wires on...tedious but it works.

I find that to breed pin failures at the package.

>   What about doing a small board and getting those
> sparkfun or whoever to do it? they seem to be way
> cheap, run the bunch on a panel each week.  You wouldnt
>have any holes to drill, just pads.

Maybe.  I'll be running some more protos at Advanced Circuits
in the coming weeks anyway.  Maybe I'll just design a little
chunk on the board that I can shear off later, after my prototype
is done.

Mike H.

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