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Editorial Comment

Editorial Comment

2007-08-02 by djbrow54

I posted what I thought might be positive news in message 651. Now I
realize I wrote it with a lot of "shalls" and "disclaimers" but I
wanted to be perfectly clear and I do author like an engineer writing
a specification. I have sold my 3 extra prototype CVS boards.
Hopefully the owners will validate the buildability, parts list, and
functionality, and post some photos and status on this list.

But, I am completely puzzled by the lack of any follow-on posts. Is
this project completely of no interest? Is the list broken? This
design is buildable in a number of different configurations. Based on
the flurry of postings some time back, I had expected at least some
interest and perhaps a few "I want one" postings so that people could
begin to group together for an order. 8 boards is ~$300 so it
shouldn't be hard to organize a small order.

What am I missing?

Dazed and confused ... but happy with my CVS.

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by David Moylan

I've followed this thread with some interest. I'd probably be
interested in a group buy in the future. Honestly, I didn't feel I met
the qualifications for the 3 proto boards, especially the part about
getting it completed in a timely manner.

I'm definitely interested in the project though.

Dave


djbrow54 wrote:
>
>
> I posted what I thought might be positive news in message 651. Now I
> realize I wrote it with a lot of "shalls" and "disclaimers" but I
> wanted to be perfectly clear and I do author like an engineer writing
> a specification. I have sold my 3 extra prototype CVS boards.
> Hopefully the owners will validate the buildability, parts list, and
> functionality, and post some photos and status on this list.
>
> But, I am completely puzzled by the lack of any follow-on posts. Is
> this project completely of no interest? Is the list broken? This
> design is buildable in a number of different configurations. Based on
> the flurry of postings some time back, I had expected at least some
> interest and perhaps a few "I want one" postings so that people could
> begin to group together for an order. 8 boards is ~$300 so it
> shouldn't be hard to organize a small order.
>
> What am I missing?
>
> Dazed and confused ... but happy with my CVS.
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by crystal

What am I missing?

Dazed and confused ... but happy with my CVS.


actually it's more like- what am i missing?
is there a website with the complete spec and info in general.

space is the place~
crystal

Re: Editorial Comment

2007-08-02 by djbrow54

Wow - activity! People are following this group.

All the documentation I have done is in the
"Files > Hardware > CVS Module" folder in this group.
Photos are in the
"Photos > Dave Brown" folder in this group.

John has placed the LCD documentation in the
"Files > LCD-support" folder in this group.
Photos are in the
"Photos > LCD Support PCB" folder in this group.

Dave

--- In ComputerVoltageSources@yahoogroups.com, "crystal" <crystals@...
> wrote:
>
> What am I missing?
>
> Dazed and confused ... but happy with my CVS.
>
>
> actually it's more like- what am i missing?
> is there a website with the complete spec and info in general.
>
> space is the place~
> crystal
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by The Alison Project

Yes I am interested in a group buy, also did not feel I met the qualifications to buy a proto board.

Chris


----- Original Message -----
From: djbrow54
To: ComputerVoltageSources@yahoogroups.com
Sent: Wednesday, August 01, 2007 10:32 PM
Subject: [ComputerVoltageSources] Editorial Comment


I posted what I thought might be positive news in message 651. Now I
realize I wrote it with a lot of "shalls" and "disclaimers" but I
wanted to be perfectly clear and I do author like an engineer writing
a specification. I have sold my 3 extra prototype CVS boards.
Hopefully the owners will validate the buildability, parts list, and
functionality, and post some photos and status on this list.

But, I am completely puzzled by the lack of any follow-on posts. Is
this project completely of no interest? Is the list broken? This
design is buildable in a number of different configurations. Based on
the flurry of postings some time back, I had expected at least some
interest and perhaps a few "I want one" postings so that people could
begin to group together for an order. 8 boards is ~$300 so it
shouldn't be hard to organize a small order.

What am I missing?

Dazed and confused ... but happy with my CVS.





[Non-text portions of this message have been removed]

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Jason Proctor

i'll have one, but with all the other stuff i'm doing i can't
guarantee to build it any time soon. but being a software hack as
well as a modular nut, it's right up my alley.



>Yes I am interested in a group buy, also did not feel I met the
>qualifications to buy a proto board.
>
>Chris
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Norman Fay

Basically, "me too" on this! As I'm not qualified to build one of the
prototypes, I figured the best thing to do here was shut up! Sorry! Put my
name down for a board in future, for sure.

On 8/2/07, David Moylan <dave@...> wrote:
>
> I've followed this thread with some interest. I'd probably be
> interested in a group buy in the future. Honestly, I didn't feel I met
> the qualifications for the 3 proto boards, especially the part about
> getting it completed in a timely manner.
>
> I'm definitely interested in the project though.
>
> Dave
>
> djbrow54 wrote:
> >
> >
> > I posted what I thought might be positive news in message 651. Now I
> > realize I wrote it with a lot of "shalls" and "disclaimers" but I
> > wanted to be perfectly clear and I do author like an engineer writing
> > a specification. I have sold my 3 extra prototype CVS boards.
> > Hopefully the owners will validate the buildability, parts list, and
> > functionality, and post some photos and status on this list.
> >
> > But, I am completely puzzled by the lack of any follow-on posts. Is
> > this project completely of no interest? Is the list broken? This
> > design is buildable in a number of different configurations. Based on
> > the flurry of postings some time back, I had expected at least some
> > interest and perhaps a few "I want one" postings so that people could
> > begin to group together for an order. 8 boards is ~$300 so it
> > shouldn't be hard to organize a small order.
> >
> > What am I missing?
> >
> > Dazed and confused ... but happy with my CVS.
> >
>
>


[Non-text portions of this message have been removed]

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Doug Wellington

Everybody,

Dave and I had a conversation in private email last night, so I've
decided that I'll handle a group buy, since he didn't seem to want to
buy and sell pcbs himself. Dave wanted to wait until after the
prototypes had been assembled to make sure that the circuit board and
parts list didn't have any errors, so we'll wait the 30-45 days he
estimated that would take. If I don't hear from him earlier, I'll
check back with Dave on September 1, and if everything looks good,
I'll get the design file from him and place the order.

Is anyone interested in a group buy on the front panel? Individually,
it will cost $120.73, but for an order of 5-9 that is reduced to
$108.66 and for 10-19, it's only $96.58. At some point, I'll get
around to making a stooge panel for it, but with the current list of
panels to make, it will probably be several months before I'd get to
it...

--
-Doug

http://www.analognotes.com
http://www.stoogepanels.com
http://www.dougwellington.com

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by David Moylan

Yes, I'd be interested in a panel as well.

Dave

Doug Wellington wrote:
>
>
> Everybody,
>
> Dave and I had a conversation in private email last night, so I've
> decided that I'll handle a group buy, since he didn't seem to want to
> buy and sell pcbs himself. Dave wanted to wait until after the
> prototypes had been assembled to make sure that the circuit board and
> parts list didn't have any errors, so we'll wait the 30-45 days he
> estimated that would take. If I don't hear from him earlier, I'll
> check back with Dave on September 1, and if everything looks good,
> I'll get the design file from him and place the order.
>
> Is anyone interested in a group buy on the front panel? Individually,
> it will cost $120.73, but for an order of 5-9 that is reduced to
> $108.66 and for 10-19, it's only $96.58. At some point, I'll get
> around to making a stooge panel for it, but with the current list of
> panels to make, it will probably be several months before I'd get to
> it...
>
> --
> -Doug
>
> http://www.analognotes.com <http://www.analognotes.com>
> http://www.stoogepanels.com <http://www.stoogepanels.com>
> http://www.dougwellington.com <http://www.dougwellington.com>
>
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Jay

I'd order one if there was someone willing to do the SMT soldering for me.

krisp wrote:
> Hi Dave
> I think your post scared the crap out of us competent but like to go at our one pace type S-DIYers.
> so we sat back and left it to the more compitent members
> but don't be fooled into thinking there is no one interested in this project .
> I would be up for a set of boards and would enjoy the chalenge of building them
> cheers
>
> paul darlow
>
> PS I would probably be in for the front panel as well
>
>
> ----- Original Message -----
> From: djbrow54
> To: ComputerVoltageSources@yahoogroups.com
> Sent: Thursday, August 02, 2007 4:32 AM
> Subject: [ComputerVoltageSources] Editorial Comment
>
>
> I posted what I thought might be positive news in message 651. Now I
> realize I wrote it with a lot of "shalls" and "disclaimers" but I
> wanted to be perfectly clear and I do author like an engineer writing
> a specification. I have sold my 3 extra prototype CVS boards.
> Hopefully the owners will validate the buildability, parts list, and
> functionality, and post some photos and status on this list.
>
> But, I am completely puzzled by the lack of any follow-on posts. Is
> this project completely of no interest? Is the list broken? This
> design is buildable in a number of different configurations. Based on
> the flurry of postings some time back, I had expected at least some
> interest and perhaps a few "I want one" postings so that people could
> begin to group together for an order. 8 boards is ~$300 so it
> shouldn't be hard to organize a small order.
>
> What am I missing?
>
> Dazed and confused ... but happy with my CVS.
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
> Yahoo! Groups Links
>
>
>
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by krisp

Hi Dave
I think your post scared the crap out of us competent but like to go at our one pace type S-DIYers.
so we sat back and left it to the more compitent members
but don't be fooled into thinking there is no one interested in this project .
I would be up for a set of boards and would enjoy the chalenge of building them
cheers

paul darlow

PS I would probably be in for the front panel as well


----- Original Message -----
From: djbrow54
To: ComputerVoltageSources@yahoogroups.com
Sent: Thursday, August 02, 2007 4:32 AM
Subject: [ComputerVoltageSources] Editorial Comment


I posted what I thought might be positive news in message 651. Now I
realize I wrote it with a lot of "shalls" and "disclaimers" but I
wanted to be perfectly clear and I do author like an engineer writing
a specification. I have sold my 3 extra prototype CVS boards.
Hopefully the owners will validate the buildability, parts list, and
functionality, and post some photos and status on this list.

But, I am completely puzzled by the lack of any follow-on posts. Is
this project completely of no interest? Is the list broken? This
design is buildable in a number of different configurations. Based on
the flurry of postings some time back, I had expected at least some
interest and perhaps a few "I want one" postings so that people could
begin to group together for an order. 8 boards is ~$300 so it
shouldn't be hard to organize a small order.

What am I missing?

Dazed and confused ... but happy with my CVS.





[Non-text portions of this message have been removed]

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by John Luciani

On 8/2/07, Jay <synthbaron@...> wrote:
> I'd order one if there was someone willing to do the SMT soldering for me.
>

SMT soldering isn't difficult. You do need a maginifier and an iron
with a fine tip.
I use thin solder and a water-soluble flux pen.

I have started an smd-hints page at
www.luciani.org/getting-it-done/smd-hints/smd-hints-index.html

(* jcl *)


--
http://www.luciani.org

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Romeo Fahl

I'd order a board as well. Not sure what to do panel wise yet, since I don't
use MOTM size panels.

Romeo

On 8/2/07, Doug Wellington <DougWellington@...> wrote:
>
> Everybody,
>
> Dave and I had a conversation in private email last night, so I've
> decided that I'll handle a group buy, since he didn't seem to want to
> buy and sell pcbs himself. Dave wanted to wait until after the
> prototypes had been assembled to make sure that the circuit board and
> parts list didn't have any errors, so we'll wait the 30-45 days he
> estimated that would take. If I don't hear from him earlier, I'll
> check back with Dave on September 1, and if everything looks good,
> I'll get the design file from him and place the order.
>
> Is anyone interested in a group buy on the front panel? Individually,
> it will cost $120.73, but for an order of 5-9 that is reduced to
> $108.66 and for 10-19, it's only $96.58. At some point, I'll get
> around to making a stooge panel for it, but with the current list of
> panels to make, it will probably be several months before I'd get to
> it...
>
> --
> -Doug
>
> http://www.analognotes.com
> http://www.stoogepanels.com
> http://www.dougwellington.com
>
>


[Non-text portions of this message have been removed]

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Jay

Great. How much do you charge?

John Luciani wrote:
> On 8/2/07, Jay <synthbaron@...> wrote:
>> I'd order one if there was someone willing to do the SMT soldering for me.
>>
>
> SMT soldering isn't difficult. You do need a maginifier and an iron
> with a fine tip.
> I use thin solder and a water-soluble flux pen.
>
> I have started an smd-hints page at
> www.luciani.org/getting-it-done/smd-hints/smd-hints-index.html
>
> (* jcl *)
>
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by John Luciani

On 8/2/07, Jay <synthbaron@...> wrote:
> Great. How much do you charge?

I primarily do my own protoypes. If you had a enough boards you could
try going to a
contract assembly house that does prototypes.

One place that comes to mind is http://www.screamingcircuits.com
They state that they will assembly a single board but the cost must be
extremely high. The money would probably be better spend on tools ;-)

(* jcl *)

--
http://www.luciani.org

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Samppa Tolvanen

Hi ya, Dave!

On 8/2/07, djbrow54 <davebr@...> wrote:
>
>
> But, I am completely puzzled by the lack of any follow-on posts. Is
> this project completely of no interest? Is the list broken? This
> design is buildable in a number of different configurations. Based on
> the flurry of postings some time back, I had expected at least some
> interest and perhaps a few "I want one" postings so that people could
> begin to group together for an order. 8 boards is ~$300 so it
> shouldn't be hard to organize a small order.
>
> What am I missing?
>

Your post with made the point clear: You want somebody who is READY to
"proof build" the board and do the documentation. Nothing wrong with
that.

So how things went in this CVS thingy? We wanted PSIM-1 replacement to
be available and the project grew - You are the "project leader", we
follow You ;)

In that light - We are still waiting for: THIS IS IT! It's working and
completed :D

I'm probably not going to participate on the group buy, so only thing
I feel sorry about this project is using proprietary software for the
design :(

Samppa

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by John Mahoney

At 03:05 PM 8/2/2007, Samppa Tolvanen wrote:

>In that light - We are still waiting for: THIS IS IT! It's working and
>completed :D

Dave's new CVS *is* it. He designed and built it, and it's working.
He's selling the few extra PCBs so that others can build it, thus
verifying its THIS IS IT status. He wanted people who will build it
sooner rather than later so that the project can move forward, in
whatever form that is.

John Loffink designed the display adapter and that also works.

I would not look for Dave to do much more work. For instance, he's
not going to produce more boards to sell. I assume that he'll assist
in various ways, but he has done a tremendous job here.

I tip my hat to both Dave and John L.

I would like to build a CVS, eventually, but my time and money have
been going more into recording gear than modular synth stuff. (Mics,
preamps, acoustic treatments, outboard gear, plug-ins... there's no
end in sight!) And I've already got a PSIM-1.
--
john


--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.476 / Virus Database: 269.11.2/931 - Release Date: 8/1/2007 4:53 PM

Re: Editorial Comment

2007-08-02 by djbrow54

Thank you John for that clarification. I've been saying it all along.
The intent was that this be a group effort and the resulting design
public. I intend to meet that intent and everything is public except
the PCB design. I would like to publicly thank John Loffink for his
design of the LCD_Support PCB and also thank Grant Richter for his
initial design and Harry Bissell for some early consolidation and
consultation. I just took what they started and made it work.
However, for this project to move forward, others need to help and I
am glad to see this happening. I've got limited availability for
anything further on this project.

I am holding that back on making the board design files public for a
couple of reasons:

So far I am the only one who has built one. I still contend that this
is not a beginner's PCB, especially with the SMT. Someone with good
skills can build the board. I want others to build a few of the
'extra' boards I had to verify buildability.

I'm sure there are errors in the parts list and possibly schematic. I
think it would be wise to get a few more of these running to minimize
the number of issues.

Lastly, the TI DACs are still on allocation. You can't buy them yet.
They've been on allocation since the fall so you are just going to
have to wait anyway. I have built one with a Analog Devices DAC and
would like others to verify this as a viable substitute. However,
this DAC is not yet available in distribution so you're still going to
have to wait.

Dave

--- In ComputerVoltageSources@yahoogroups.com, John Mahoney
<jmahoney@...> wrote:
>
> At 03:05 PM 8/2/2007, Samppa Tolvanen wrote:
>
> >In that light - We are still waiting for: THIS IS IT! It's working
> >and completed :D
>
> Dave's new CVS *is* it. He designed and built it, and it's working.
> He's selling the few extra PCBs so that others can build it, thus
> verifying its THIS IS IT status. He wanted people who will build it
> sooner rather than later so that the project can move forward, in
> whatever form that is.
>
> John Loffink designed the display adapter and that also works.
>
> I would not look for Dave to do much more work. For instance, he's
> not going to produce more boards to sell. I assume that he'll assist
> in various ways, but he has done a tremendous job here.
>
> I tip my hat to both Dave and John L.
>
> I would like to build a CVS, eventually, but my time and money have
> been going more into recording gear than modular synth stuff. (Mics,
> preamps, acoustic treatments, outboard gear, plug-ins... there's no
> end in sight!) And I've already got a PSIM-1.
> --
> john

Re: [ComputerVoltageSources] Editorial Comment

2007-08-02 by Eric Brombaugh

--- Samppa Tolvanen <samppa.tolvanen@...> wrote:

> so only thing
> I feel sorry about this project is using proprietary
> software for the design :(

I assume that the proprietary SW you're talking about
is the BasicATOM development environment and
interpreter?

If that's the case, what would you prefer as an
alternative?

Eric




____________________________________________________________________________________
Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games.
http://sims.yahoo.com/

Front Panel

2007-08-02 by djbrow54

If you are going to use my panel design, I have some suggestions.

Double-check the LCD dimensions. This fit perfect for the display I
used but I don't think it is still available. John's recommended
display should be compatible, but someone should check it out with the
panel.

I chose the Piher potentiometers that use a smaller 7 mm mounting
hole. You'll have to decide what size mounting hole you want.

In the photo of the rear, you'll see that the two MTA connectors on
the LCD_Support PCB are oriented such that the wires to the connector
are to the top. There is limited spacing if you have a cabinet with
the top 1/2" blocked as many wood cabinets do. Alternatives would be
to lower the LCD, use the "thru" connectors so the wires connect on
the opposite side, don't use connectors and solder directly to the
PCB, bend the wires in a tight fashion at the connector, or just
install the MTA connectors backwards. I use mine with rack rails so it
doesn't matter. I personally would leave everything as is and use the
"thru" connectors.

There is no provision for mounting the PCB. I made my own bracket.
Perhaps someone can figure out a better means of mounting.

There is no provision for mounting the 11 LEDs. This would be an
opportunity for someone to do a small PCB. I just soldered LEDs to a
vectorboard and RTV'd it to the panel.

You have to decide if you want the EXT IO connector. I use it all the
time with my PSIM Expansion for an auxilary keypad and control.
However, the PS2 connector I picked is awful. It required front-side
milling to recess the connector (which worked fine but is an extra
cost step), it was a PCB mount with very small pins to solder to, but
the worst is there is no locking mechanism so the mating connector is
easily pulled loose. There are threads on the end of this connector
but I have not been able to find a mating connector that uses them.
The pins are small and they are a pain to solder. I'd probably change
and use a 4 pin DIN like the Mouser 16HR654 and use the same hole
pattern as for the MIDI connector.

Dave


--- In ComputerVoltageSources@yahoogroups.com, "Doug Wellington"
<DougWellington@...> wrote:
> Is anyone interested in a group buy on the front panel?
> Individually, it will cost $120.73, but for an order of 5-9 that is
> reduced to $108.66 and for 10-19, it's only $96.58. At some point,
> I'll get around to making a stooge panel for it, but with the
> current list of panels to make, it will probably be several months
> before I'd get to it...
> --
> -Doug
> http://www.analognotes.com
> http://www.stoogepanels.com
> http://www.dougwellington.com

Re: [ComputerVoltageSources] Editorial Comment

2007-08-03 by Samppa Tolvanen

Hi,

On 8/2/07, Eric Brombaugh <ebrombaugh@...> wrote:
>
>
> I assume that the proprietary SW you're talking about
> is the BasicATOM development environment and
> interpreter?
>

Ah, no: Using ExpressPCB - Design is tied to their service, which
means, for gerbers (ect.) layout has to be done again with some other
software.

The layout itself is good - thanks Dave! It might not be suitable for
the first project to build, but it's not that complicated, SMTs are
reasonable and lots of repetitive stuff in input buffers.

CVS has a good backing with existing PSIM software - and there isn't
really an alternative, it would have to be created.

Samppa

Re: Editorial Comment

2007-08-03 by djbrow54

I always hoped someone would take my design, do it on a larger format,
add dual parts (DIP and SMT) for the DACs, and make it more buildable.

However, the DIP parts are considerably more expensive. DAC8420's are
$45 each at Digikey. The TI7714UB is $18 at Digikey, so that is $54
savings by using the SMT. I believe the target for the AD5726 is
something in the $8 range for ~$74 savings. That's sure worth a try
to solder SMT.

Remember, the pitch on this SMT part is only half that of a DIP - 0.
050". If you can hold your hand steady, see it, and have a fine tip
soldering iron, then it is quite doable. If you bridge (I have just
once), solder wick cleans it right up.

Dave


--- In ComputerVoltageSources@yahoogroups.com, "Samppa Tolvanen"
<samppa.tolvanen@...> wrote:
>
> Hi,
>
> On 8/2/07, Eric Brombaugh <ebrombaugh@...> wrote:
> >
> >
> > I assume that the proprietary SW you're talking about
> > is the BasicATOM development environment and
> > interpreter?
> >
>
> Ah, no: Using ExpressPCB - Design is tied to their service, which
> means, for gerbers (ect.) layout has to be done again with some
other
> software.
>
> The layout itself is good - thanks Dave! It might not be suitable
for
> the first project to build, but it's not that complicated, SMTs are
> reasonable and lots of repetitive stuff in input buffers.
>
> CVS has a good backing with existing PSIM software - and there isn't
> really an alternative, it would have to be created.
>
> Samppa
>

Re: [ComputerVoltageSources] Editorial Comment

2007-08-03 by Eric Brombaugh

--- Samppa Tolvanen <samppa.tolvanen@...> wrote:

> Hi,
>
> On 8/2/07, Eric Brombaugh <ebrombaugh@...>
> wrote:
> >
> >
> > I assume that the proprietary SW you're talking
> about
> > is the BasicATOM development environment and
> > interpreter?
> >
>
> Ah, no: Using ExpressPCB - Design is tied to their
> service, which
> means, for gerbers (ect.) layout has to be done
> again with some other
> software.
>

Aha. That was the other alternative. I guess being
locked in would require the layout be redone, which is
a nuisance.

> CVS has a good backing with existing PSIM software -
> and there isn't
> really an alternative, it would have to be created.

Yes, it appears to be a fundamental requirement of the
CVS that it be highly compatible with existing PSIM
code. Without that baseline it would be possible to
take advantage of a wide variety of other processors &
languages, but would also require a great deal of
fresh software development. From what I've read back
in the early days of this group the software legacy is
worth more than the hardware.

Eric



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Re: [ComputerVoltageSources] Editorial Comment

2007-08-03 by John Mahoney

>Yes, it appears to be a fundamental requirement of the CVS that it
>be highly compatible with existing PSIM code. Without that baseline
>it would be possible to take advantage of a wide variety of other
>processors & languages, but would also require a great deal of fresh
>software development. From what I've read back in the early days of
>this group the software legacy is worth more than the hardware.
>
>Eric

Right, and guess who has written the most PSIM software? That's
right: Dave Brown.
--
john


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Re: [ComputerVoltageSources] Re: Editorial Comment

2007-08-03 by mcb, inc.

On Fri, 3 Aug 2007, djbrow54 wrote:

> Remember, the pitch on this SMT part is only half that of a DIP - 0.
> 050". If you can hold your hand steady, see it, and have a fine tip
> soldering iron, then it is quite doable. If you bridge (I have just
> once), solder wick cleans it right up.

Another design option is to layout for an SMT part or the
same part on a DIP converter. Then the people who really
can't work SMT just need to find someone to mount the part
on the converter. ("Hey kid, you've got nice hands. Wanna
make $20?")

--
Monty Brandenberg

Re: [ComputerVoltageSources] Editorial Comment

2007-08-03 by Scott E.

Hi all,

Count me in for a group buy on the PCB, but I will wait for the Stooge
panel, thx. :)

I would also like to thank Dave and John for their efforts, as well as
to anyone else who may have contributed to this project.

Think this is a great addition to a modular synth.

Scott E.
===============================
djbrow54 wrote:
>
> I posted what I thought might be positive news in message 651. Now I
> realize I wrote it with a lot of "shalls" and "disclaimers" but I
> wanted to be perfectly clear and I do author like an engineer writing
> a specification. I have sold my 3 extra prototype CVS boards.
> Hopefully the owners will validate the buildability, parts list, and
> functionality, and post some photos and status on this list.
>
> But, I am completely puzzled by the lack of any follow-on posts. Is
> this project completely of no interest? Is the list broken? This
> design is buildable in a number of different configurations. Based on
> the flurry of postings some time back, I had expected at least some
> interest and perhaps a few "I want one" postings so that people could
> begin to group together for an order. 8 boards is ~$300 so it
> shouldn't be hard to organize a small order.
>
> What am I missing?
>
> Dazed and confused ... but happy with my CVS.
>
>


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