Re: Vaxstation 3100 of odd sort on epay

[Glen Slick via cctalk]

> The VXT software is included in the InfoServer software which is
> included the OpenVMS Freeware Distribution, V8, Disk1.
>
> ftp://ftp.hp.com/pub/openvms/FREEWARE80_1.ZIP
>
> Inside the infoserver.zip file which is inside the infoserver directory:
> ag-pjjhh-be.img - VTX Software V2.1 CD-ROM image
>

Just to refresh my memory about the VXT software, I started a OpenVMS
session on a SIMH VAX and mounted the ag-pjjhh-be.img image as an
RRD40 CD-ROM to take a look at its contents.

It contains a saveset that you can install on an OpenVMS host using
VMSINSTAL, along with documentation in PostScript format. I converted
those documents into PDF files. I forget if I ever uploaded them
anywhere.

There are also files on the ag-pjjhh-be.img image that can be
installed on an InfoServer using UPDATE. If you do have an InfoServer
there are some things you can do with that that you can't do with the
OpenVMS host VXT software installation.


$ dir dua1:[vxt021...]*.*;* /columns=1

Directory DUA1:[VXT021]

KIT.DIR;1
LINE_DOCS.DIR;1
POST_DOCS.DIR;1

Total of 3 files.

Directory DUA1:[VXT021.KIT]

VXT021.A;1
VXT021.B;1
VXT021.C;1
VXT021.D;1
VXT021.E;1

Total of 5 files.

Directory DUA1:[VXT021.LINE_DOCS]

VXT021.RELEASE_NOTES;1

Total of 1 file.

Directory DUA1:[VXT021.POST_DOCS]

VXT021_RELEASE_NOTES.PS;1
VXT_GETTING_STARTED_DE.PS;1
VXT_GETTING_STARTED_EN.PS;1
VXT_GETTING_STARTED_ES.PS;1
VXT_GETTING_STARTED_FR.PS;1
VXT_GETTING_STARTED_IT.PS;1
VXT_GETTING_STARTED_NL.PS;1
VXT_SYSMAN_INSTALL_APPENDIX.PS;1
VXT_SYSMAN_INSTALL_DEC_OSF1_AXP.PS;1
VXT_SYSMAN_INSTALL_HP-UX.PS;1
VXT_SYSMAN_INSTALL_IBM_AIX.PS;1
VXT_SYSMAN_INSTALL_INDEX.PS;1
VXT_SYSMAN_INSTALL_INFOSERVER.PS;1
VXT_SYSMAN_INSTALL_OPENVMS.PS;1
VXT_SYSMAN_INSTALL_OVERVIEW.PS;1
VXT_SYSMAN_INSTALL_SCO_ODT.PS;1
VXT_SYSMAN_INSTALL_SUNOS.PS;1
VXT_SYSMAN_INSTALL_ULTRIX.PS;1
VXT_SYSMAN_INSTALL_USING_CONFIG_MANAGER.PS;1
VXT_USER_GUIDE.PS;1

Total of 20 files.

Grand total of 4 directories, 29 files.


$ dir DUA1:[SYSD.SYSEXE...]*.*;* /columns=1

Directory DUA1:[SYSD.SYSEXE]

ESS$VXT_V2.DAT;1
VXT.PWD;1
VXT021.SYS;1
VXTEX020A.SYS;1
VXTLDR021.SYS;1
VXT_G_.XRM;1
VXT_INFOREADER_021.LIBRARY;1
VXT_IR_GETTING_STARTED_DE_021.DECW$BOOK;1
VXT_IR_GETTING_STARTED_EN_021.DECW$BOOK;1
VXT_IR_GETTING_STARTED_ES_021.DECW$BOOK;1
VXT_IR_GETTING_STARTED_FR_021.DECW$BOOK;1
VXT_IR_GETTING_STARTED_IT_021.DECW$BOOK;1
VXT_IR_GETTING_STARTED_NL_021.DECW$BOOK;1
VXT_IR_INFOSERVER_OPS_021.DECW$BOOK;1
VXT_IR_SOFTWARE_RELNOTES_021.DECW$BOOK;1
VXT_IR_SYSMAN_APPENDIX_021.DECW$BOOK;1
VXT_IR_SYSMAN_CONFIGMAN_021.DECW$BOOK;1
VXT_IR_SYSMAN_HP_021.DECW$BOOK;1
VXT_IR_SYSMAN_IBM_021.DECW$BOOK;1
VXT_IR_SYSMAN_INFOSERVER_021.DECW$BOOK;1
VXT_IR_SYSMAN_OSF_021.DECW$BOOK;1
VXT_IR_SYSMAN_OVERVIEW_021.DECW$BOOK;1
VXT_IR_SYSMAN_SCO_021.DECW$BOOK;1
VXT_IR_SYSMAN_SUN_021.DECW$BOOK;1
VXT_IR_SYSMAN_ULTRIX_021.DECW$BOOK;1
VXT_IR_SYSMAN_VMS_021.DECW$BOOK;1
VXT_IR_USER_INFO_021.DECW$BOOK;1
VXT_IR_USING_INFOREADER_021.DECW$BOOK;1
VXT_V2_1.FNT;1
VXT_VER_021.DAT;1

Total of 30 files.

Re: Key for Intel MDS-800

[Fred Cisin via cctalk]

On Wed, 10 May 2017, Sam O'nella via cctalk wrote:
Is this a thing? There's an archive of vintage physical computer keys? 
This would be very cool. Heck one could potentially even 3d print a key 
for short term usage.


Jay West was starting to collect some of that info.
There was a thread last year, first half of 2016:
Re: Keys - Non-Ace was RE: ACE Key codes (xx2247 etc.)

Re: Key for Intel MDS-800

[Ed via cctalk]

wonder if the is a same  key as the  intelect 8 uses.?
Ed#
 
 
 
In a message dated 5/10/2017 7:28:16 P.M. US Mountain Standard Time,  
cctalk@classiccmp.org writes:

Is this  a thing? There's an archive of vintage physical computer keys? 
This would be  very cool. Heck one could potentially even 3d print a key for 
short term  usage.
 Original message From: Dennis Boone via cctalk  
 Date: 5/10/17  4:13 PM  (GMT-06:00)  To: "General 
Discussion: 
On-Topic and Off-Topic Posts"   Subject: Re: Key for 
Intel MDS-800
If someone  has one, let's get it added to the ccmp keys list: blank
type, cut info,  etc.

De

Re: Key for Intel MDS-800

[Sam O'nella via cctalk]

Is this a thing? There's an archive of vintage physical computer keys? This 
would be very cool. Heck one could potentially even 3d print a key for short 
term usage.
 Original message From: Dennis Boone via cctalk 
 Date: 5/10/17  4:13 PM  (GMT-06:00) To: "General 
Discussion: On-Topic and Off-Topic Posts"  Subject: Re: 
Key for Intel MDS-800
If someone has one, let's get it added to the ccmp keys list: blank
type, cut info, etc.

De

Re: Need help reproducing a PCB

[Jim Brain via cctalk]

On 5/10/2017 6:02 PM, wrco...@wrcooke.net wrote:

In EAGLE I am having very good luck with:


 * Getting some nice B versions of the scans (Thanks everyone, but
   especially Paul)
 * importing them into EAGLE under layer 200 and 201 (reversing bottom
   layer)
 * setting layers to some light colors (pale yellow and pale green are
   my choices)
 * moving them so they line up (not perfect, but I tried)
 * Move all of the PCB footprints to match up with holes
 * Turn off top layer
 * start routing bottom layer (tedious, but not too hard)
 * repeat for top layer


A pic of progress:

https://s6.postimg.org/vkffvf8sh/Capture.png


--
Jim Brain
br...@jbrain.com  
www.jbrain.com

Re: Vaxstation 3100 of odd sort on epay

[Glen Slick via cctalk]

On Wed, May 10, 2017 at 1:12 PM, Charles Dickman  wrote:
>
> Is the software for this still around someplace? I had it at one time,
> but didn't have a monitor, keyboard or mouse. Now I have everything
> but the software.
>
> -chuck

The VXT software is included in the InfoServer software which is
included the OpenVMS Freeware Distribution, V8, Disk1.

ftp://ftp.hp.com/pub/openvms/FREEWARE80_1.ZIP

Inside the infoserver.zip file which is inside the infoserver directory:
ag-pjjhh-be.img - VTX Software V2.1 CD-ROM image


The current HP website makes it difficult to find OpenVMS freeware
packages. I wouldn't be surprised if these files vanished at some
point. Hope they are archived elsewhere.

Re: Key for Intel MDS-800

[Dennis Boone via cctalk]

 > Is there anyone who could copy a MDS-800 key for me?  I would cover
 > expenses...

If someone has one, let's get it added to the ccmp keys list: blank
type, cut info, etc.

De

Re: SMS 8" Floppy Drive

[Douglas Taylor via cctalk]

On 5/9/2017 3:05 PM, shad via cctech wrote:

Hello,
I have a clone PDP11, including an SMS QBUS board and a 8" drive.
Not sure if it's the same model as yours.
The controller runs MSCP for floppy with RX02 or IBM format , and for an
MFM hard disk like Seagate ST251.
Board code is SMS FWD0106.
I should have some manual and drivers for it somewhere, if you manage to
find the board, but utilities like formatter aren't for VAX, IIRC.

Andrea


The SMS documentation in bitsavers says the controller can be operated 
in two modes; compatible and extended.  In the compatible mode the SMS 
unit will work with the DEC DY driver, or so they say.  If that is true 
that would be good news since my disk drive hardware has only 2 floppies 
and no winchester disks.  However, it looks I would need the SMS 
diagnostics or FW driver in order to format RX02 media.


Nevertheless, if I do get it running and it is DEC RX02 compatible I 
would try to use it in the MicroVax just to see what happens


Doug

Key for Intel MDS-800

[Rob Doyle via cctalk]

Before I disassemble my MDS-800 -

Is there anyone who could copy a MDS-800 key for me?  I would cover 
expenses...


Rob Doyle

Re: Vaxstation 3100 of odd sort on epay

[Charles Dickman via cctalk]

On Tue, May 2, 2017 at 10:55 PM, Glen Slick via cctalk
 wrote:
> A VT1300 is a VAXstation 3100 M30 KA42-A CPU in a BA42-A box but
> without the SCSI interface and internal hard disk shelf mounting
> hardware. It might also have different firmware than a standard VS3100
> M30. It is meant to net boot the X Window System server software. I
> have a VT1300 (and a couple of VXT2000) that I haven't powered on in a
> while.

Is the software for this still around someplace? I had it at one time,
but didn't have a monitor, keyboard or mouse. Now I have everything
but the software.

-chuck

Re: FTGH Large amount of DEC/Misc Classic computer hardware

[Peter C. Wallace via cctalk]

On Wed, 10 May 2017, Guy Sotomayor Jr via cctalk wrote:


Date: Wed, 10 May 2017 12:30:47 -0700
From: Guy Sotomayor Jr via cctalk 
Reply-To: Guy Sotomayor Jr ,
"General Discussion: On-Topic and Off-Topic Posts" 
To: Noel Chiappa ,
"General Discussion: On-Topic and Off-Topic Posts" 
Subject: Re: FTGH Large amount of DEC/Misc Classic computer hardware



On May 10, 2017, at 12:20 PM, Noel Chiappa via cctalk  
wrote:


From: Guy Sotomayor Jr



We need to move our business and I have about a ton of
classic cimputer junk in the SFBA that need to go or get scrapped:



Symbolics 3645? (from Guy Sotomayer a few years back)
PDP 11



I stopped by and picked up some stuff from Peter today. ... He did
mention that he has to be out of his space by May 31st and anything
that isn't picked up will be scrapped.



I did take some pictures that I'll put up sometime tomorrow but what
Pete has on his list below seems pretty accurate.


WHat kind of -11, do you happen to recall?


Some Q-bus machine.  It was just the LSI-11 style open enclosure.  I didn??t
look very closely at it.


Theres small card cage with some random boards but there is one of those tall 
skinny cases that the older VAXstations came in that has an 11-23 or 5x 
something with a A-D card


Also the HP calculator is a 9825






I assume someone will have grabbed the 'Bolics machine... Hyper-desirable.


Yep.  Know him *really* well.  ;-)

You can see pics here: https://www.flickr.com/photos/150223282@N04/albums



I do hope someone will be able to scoop up all this stuff. Even if all
you do it put it up on eBay, that's still better that having it go to
scrap!


I did my part!  ;-)

TTFN - Guy



Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.

Re: FTGH Large amount of DEC/Misc Classic computer hardware

[Guy Sotomayor Jr via cctalk]

> On May 10, 2017, at 12:20 PM, Noel Chiappa via cctalk  
> wrote:
> 
>> From: Guy Sotomayor Jr
> 
 We need to move our business and I have about a ton of
 classic cimputer junk in the SFBA that need to go or get scrapped:
> 
 Symbolics 3645? (from Guy Sotomayer a few years back)
 PDP 11
> 
>> I stopped by and picked up some stuff from Peter today. ... He did
>> mention that he has to be out of his space by May 31st and anything
>> that isn't picked up will be scrapped.
> 
>> I did take some pictures that I'll put up sometime tomorrow but what
>> Pete has on his list below seems pretty accurate.
> 
> WHat kind of -11, do you happen to recall?

Some Q-bus machine.  It was just the LSI-11 style open enclosure.  I didn’t
look very closely at it.

> 
> I assume someone will have grabbed the 'Bolics machine... Hyper-desirable.

Yep.  Know him *really* well.  ;-)

You can see pics here: https://www.flickr.com/photos/150223282@N04/albums

> 
> I do hope someone will be able to scoop up all this stuff. Even if all
> you do it put it up on eBay, that's still better that having it go to
> scrap!

I did my part!  ;-)

TTFN - Guy

Re: FTGH Large amount of DEC/Misc Classic computer hardware

[Noel Chiappa via cctalk]

> From: Guy Sotomayor Jr

>>> We need to move our business and I have about a ton of
>>> classic cimputer junk in the SFBA that need to go or get scrapped:

>>> Symbolics 3645? (from Guy Sotomayer a few years back)
>>> PDP 11

> I stopped by and picked up some stuff from Peter today. ... He did
> mention that he has to be out of his space by May 31st and anything
> that isn't picked up will be scrapped.

> I did take some pictures that I'll put up sometime tomorrow but what
> Pete has on his list below seems pretty accurate.

WHat kind of -11, do you happen to recall?

I assume someone will have grabbed the 'Bolics machine... Hyper-desirable.

I do hope someone will be able to scoop up all this stuff. Even if all
you do it put it up on eBay, that's still better that having it go to
scrap!

Noel

Re: Model 33 wiring complexity

[Ethan Dicks via cctalk]

On Wed, May 10, 2017 at 2:22 PM, Paul Koning via cctalk
 wrote:
> I'd put it this way:  For teletypes, the receiver is predominantly an 
> inductive load.  And it wants a fairly short rise time, so you pick the time 
> constant you need, which gives you R, which in turn gives you the needed 
> drive voltage.  And that works out to be a fairly high voltage in a lot of 
> cases, especially with the older machines with 60 mA loop current.  The 
> needed loop R is almost entirely the series R; the receiver coil adds very 
> little to the total.

I'm restoring a Model 19 teletype (5-level Baudot). The current loop
is 60mA, and uses 120VDC for the loop.  Typical of the class.

-ethan

Locust 1-2-3

[Liam Proven via cctalk]

This came up recently due to a small coincidence. Does anyone remember
this early MS-DOS game for PC compatibles?

 It was designed to look exactly like the spreadsheet, so you could
play in the office, but you had to "shoot" falling numbers by doing
arithmetic...

It looked just like a mockup of 1-2-3 r2.01, the classic version.

>From very vague memory...

There was an answer line at the bottom. Numbers would trickle down the
current column. You had to add, subtract, multiply or divide and input
the correct answer. If you didn't, your mistakes piled up, like
incomplete lines in Tetris, giving you less room and so less time to
do the computation, until you died.

Then a new column began, I think. When all the columns were full of
figures, you'd died and had to start a new game.

It wasn't much of a game, but it was kinda fun, and it was a perfect
mockup of the spreadsheet, so it would pass casual over-the-shoulder
inspection.


-- 
Liam Proven • Profile: https://about.me/liamproven
Email: lpro...@cix.co.uk • Google Mail/Talk/Plus: lpro...@gmail.com
Twitter/Facebook/Flickr: lproven • Skype/LinkedIn/AIM/Yahoo: liamproven
UK: +44 7939-087884 • ČR/WhatsApp/Telegram/Signal: +420 702 829 053

Re: Model 33 wiring complexity

[Paul Koning via cctalk]

> On May 10, 2017, at 2:24 PM, Chuck Guzis via cctalk  
> wrote:
> 
> On 05/10/2017 10:22 AM, Shoppa, Tim via cctalk wrote:
>> The Model 33's I bought back when I was a teenager, were all ex-Telex
>> use and had exceedingly complicated wiring harnesses as well as
>> built-in modems. They had paper tape readers and punches with various
>> auto-start/auto-stop relay options.
> 
> Wasn't Telex 5-level, not 7?  So they'd be Model 32s--or is my memory
> faulty?

Classically, yes.  I wonder if ASCII was done at some point.  Also, teleprinter 
service generically comes in a number of flavors, including 6 bit codes (of 
many variants) for newspaper wire services.

paul

Re: Model 33 wiring complexity

[Chuck Guzis via cctalk]

On 05/10/2017 10:22 AM, Shoppa, Tim via cctalk wrote:
> The Model 33's I bought back when I was a teenager, were all ex-Telex
> use and had exceedingly complicated wiring harnesses as well as
> built-in modems. They had paper tape readers and punches with various
> auto-start/auto-stop relay options.

Wasn't Telex 5-level, not 7?  So they'd be Model 32s--or is my memory
faulty?

--Chuck

Re: Model 33 wiring complexity

[Paul Koning via cctalk]

> On May 10, 2017, at 2:06 PM, Tony Duell via cctalk  
> wrote:
> 
> On Wed, May 10, 2017 at 6:22 PM, Shoppa, Tim via cctalk
>  wrote:
> 
>> I usually also found a useful current loop supply in the base. Sometimes I 
>> would find
>> bipolar relays and 20mA/60mA conversion supplies. I was a little surprised 
>> at some
>> of the current loop supplies - some of them weighed 20 pounds and were 
>> obviously
>> made for driving exceedingly long lines (open-circuit voltage way over 
>> 100VDC).
>> Seemed odd these were in there considering the units had modems just a foot
>> away from magnet and keyboard switch.
> 
> Not necessarily for long lines.
> 
> Some teleprinters had the receiving magnet directly in the current loop. The
> resistance of this was too small to limit the current to 20mA (or whatever) so
> a series resistor was added.
> 
> Now the time constant of an LR series circuit is L/R. In other words a higher
> resistor gives a shorter time constant. You get more rapid operation with a
> higher voltage supply as you then have a higher resistance circuit.

I'd put it this way:  For teletypes, the receiver is predominantly an inductive 
load.  And it wants a fairly short rise time, so you pick the time constant you 
need, which gives you R, which in turn gives you the needed drive voltage.  And 
that works out to be a fairly high voltage in a lot of cases, especially with 
the older machines with 60 mA loop current.  The needed loop R is almost 
entirely the series R; the receiver coil adds very little to the total.

paul

Re: Model 33 wiring complexity

[Tony Duell via cctalk]

On Wed, May 10, 2017 at 6:22 PM, Shoppa, Tim via cctalk
 wrote:

> I usually also found a useful current loop supply in the base. Sometimes I 
> would find
> bipolar relays and 20mA/60mA conversion supplies. I was a little surprised at 
> some
> of the current loop supplies - some of them weighed 20 pounds and were 
> obviously
> made for driving exceedingly long lines (open-circuit voltage way over 
> 100VDC).
> Seemed odd these were in there considering the units had modems just a foot
> away from magnet and keyboard switch.

Not necessarily for long lines.

Some teleprinters had the receiving magnet directly in the current loop. The
resistance of this was too small to limit the current to 20mA (or whatever) so
a series resistor was added.

Now the time constant of an LR series circuit is L/R. In other words a higher
resistor gives a shorter time constant. You get more rapid operation with a
higher voltage supply as you then have a higher resistance circuit.

-tony

Re: Need help reproducing a PCB

[Jim Brain via cctalk]

On 5/10/2017 11:29 AM, Alexandre Souza via cctalk wrote:

Anders, mind sharing which method you use to redraw a PCB? I have lots of
interest in this subject.
I know the question was not directed at me, but since I am doing exactly 
this, I can offer my perspective.


 * I first scanned the files
 * Then, I reversed the back and cropped so both pics were the same
   size and orientation
 * I then used a photo manipulation app to create two "layers" and put
   the two images in a layer each
 * I then created a new layer and set the brush to small
 * I then created a schematic of the unit in EAGLE, putting all of the
   parts in the schematic in the general location as they were on the board
 * I the started tracing over the layers, turning on or off the top
   layer to see and trace the bottom layer.
 * Once I found two connections, I added the connection in EAGLE schematic
 * Repeat until all traces are covered with a brush stroke
 * I then had a really horrid looking schematic
 * The next step was to clean up the schematic
 * Next, I laid out the PCB according to the original, placing all of
   the parts in the same place.
 * Now, I intend to trace the metal into the PCB design.  I figure if
   there any discrepency, then I can fix the schematic and I will have
   more confidence that the design is correct.
 * The last step is to get a PCB manufactured, and see if the design
   still works.

Jim

Re: Need help reproducing a PCB

[Jim Brain via cctalk]

On 5/10/2017 10:23 AM, Doug Ingraham wrote:

If this is a one off all you need to do is print the negatives
I think my main problem right now is getting true negatives.  The scans 
I took don't immediately yield sharp negatives, and so photo editing is 
needed to create that.


Once that happens, this (or other options) are very possible.

Model 33 wiring complexity

[Shoppa, Tim via cctalk]

The Model 33's I bought back when I was a teenager, were all ex-Telex use and 
had exceedingly complicated wiring harnesses as well as built-in modems. They 
had paper tape readers and punches with various auto-start/auto-stop relay 
options.


The exceedingly complex wiring harnesses were to add various options. The 
wiring harnesses made the wiring of the unit look, literally, a thousand times 
more complex than it actually was.


In the end all I ever did was find the magnet wire, and the keyboard contact 
wire, for the main unit and the punch.


I usually also found a useful current loop supply in the base. Sometimes I 
would find bipolar relays and 20mA/60mA conversion supplies. I was a little 
surprised at some of the current loop supplies - some of them weighed 20 pounds 
and were obviously made for driving exceedingly long lines (open-circuit 
voltage way over 100VDC). Seemed odd these were in there considering the units 
had modems just a foot away from magnet and keyboard switch.


Tim N3QE

Re: Need help reproducing a PCB

[Anders Nelson via cctalk]

Hey Alex,

I haven't re-traced a PCB but I would probably do the same thing Jim is
suggesting - import a graphic into my CAD program and trace it over with
metal. EAGLE has lots of scripts available to import graphics, DXFs and do
other completely different things. You can also write your own!

I'll be able to try converting his scans to 2-color, then he can import
them using his scripts. I won't have tim to do the tracing with metal
though.

=]

--
Anders Nelson

+1 (517) 775-6129

www.erogear.com

On Wed, May 10, 2017 at 9:29 AM, Alexandre Souza <
alexandre.tabaj...@gmail.com> wrote:

> Anders, mind sharing which method you use to redraw a PCB? I have lots of
> interest in this subject.
>
>
> 2017-05-10 13:20 GMT-03:00 Anders Nelson via cctalk  >:
>
>> Hey Jim,
>>
>> I can probably do this for you but I'm pretty busy for the moment. What's
>> your desired timeline? I've been using EAGLE since 2005 so I'm familiar.
>>
>> =]
>>
>> --
>> Anders Nelson
>>
>> +1 (517) 775-6129
>>
>> www.erogear.com
>>
>> On Wed, May 10, 2017 at 8:23 AM, Doug Ingraham via cctalk <
>> cctalk@classiccmp.org> wrote:
>>
>> > If this is a one off all you need to do is print the negatives on
>> > transparency material with a laser printer.
>> > The laser printers tend to have a little more opacity than ink jets do
>> but
>> > I have done this with an ink jet
>> > printer as well.  I also once plotted directly on the bare copper with a
>> > sharpie and had it turn out ok.
>> >
>> > Align the negatives on the sensitized board stock.
>> > Expose.
>> > Develop.
>> > Etch.
>> > Drill
>> > Solder in your feed throughs.
>> > Put the parts on the board.
>> > Debug
>> >
>> > If on the other hand you want to make even 5 boards you would be better
>> off
>> > with your approach.
>> >
>> > Best wishes!
>> >
>> > --
>> > Doug Ingraham
>> > PDP-8 SN 1175
>> >
>>
>
>

Re: Need help reproducing a PCB

[Alexandre Souza via cctalk]

Anders, mind sharing which method you use to redraw a PCB? I have lots of
interest in this subject.


2017-05-10 13:20 GMT-03:00 Anders Nelson via cctalk :

> Hey Jim,
>
> I can probably do this for you but I'm pretty busy for the moment. What's
> your desired timeline? I've been using EAGLE since 2005 so I'm familiar.
>
> =]
>
> --
> Anders Nelson
>
> +1 (517) 775-6129
>
> www.erogear.com
>
> On Wed, May 10, 2017 at 8:23 AM, Doug Ingraham via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > If this is a one off all you need to do is print the negatives on
> > transparency material with a laser printer.
> > The laser printers tend to have a little more opacity than ink jets do
> but
> > I have done this with an ink jet
> > printer as well.  I also once plotted directly on the bare copper with a
> > sharpie and had it turn out ok.
> >
> > Align the negatives on the sensitized board stock.
> > Expose.
> > Develop.
> > Etch.
> > Drill
> > Solder in your feed throughs.
> > Put the parts on the board.
> > Debug
> >
> > If on the other hand you want to make even 5 boards you would be better
> off
> > with your approach.
> >
> > Best wishes!
> >
> > --
> > Doug Ingraham
> > PDP-8 SN 1175
> >
>

Re: Need help reproducing a PCB

[Anders Nelson via cctalk]

Hey Jim,

I can probably do this for you but I'm pretty busy for the moment. What's
your desired timeline? I've been using EAGLE since 2005 so I'm familiar.

=]

--
Anders Nelson

+1 (517) 775-6129

www.erogear.com

On Wed, May 10, 2017 at 8:23 AM, Doug Ingraham via cctalk <
cctalk@classiccmp.org> wrote:

> If this is a one off all you need to do is print the negatives on
> transparency material with a laser printer.
> The laser printers tend to have a little more opacity than ink jets do but
> I have done this with an ink jet
> printer as well.  I also once plotted directly on the bare copper with a
> sharpie and had it turn out ok.
>
> Align the negatives on the sensitized board stock.
> Expose.
> Develop.
> Etch.
> Drill
> Solder in your feed throughs.
> Put the parts on the board.
> Debug
>
> If on the other hand you want to make even 5 boards you would be better off
> with your approach.
>
> Best wishes!
>
> --
> Doug Ingraham
> PDP-8 SN 1175
>

Re: Need help reproducing a PCB

[Doug Ingraham via cctalk]

If this is a one off all you need to do is print the negatives on
transparency material with a laser printer.
The laser printers tend to have a little more opacity than ink jets do but
I have done this with an ink jet
printer as well.  I also once plotted directly on the bare copper with a
sharpie and had it turn out ok.

Align the negatives on the sensitized board stock.
Expose.
Develop.
Etch.
Drill
Solder in your feed throughs.
Put the parts on the board.
Debug

If on the other hand you want to make even 5 boards you would be better off
with your approach.

Best wishes!

-- 
Doug Ingraham
PDP-8 SN 1175

Re: Need help reproducing a PCB

[Systems Glitch via cctalk]

Mile High Test/Gardien Services in Colorado will scan boards for you and give 
you ready-to-go Gerbers. It cost around $250 to have an OSI sized 2-layer board 
scanned (8x10 inches).

Thanks,
Jonathan

On Tue, 9 May 2017 22:46:08 -0500
Jim Brain via cctalk  wrote:

> I am trying to reproduce a PCB design, and I have removed all the ICs, 
> scanned the boards, and am trying to draw it up in EAGLE.  But, it would 
> much easier if I could import the actual PCB as a bitmap under my PCB 
> layout, to ensure I have have everything in the right place.
> 
> Sadly, my graphics manipulation skills are suboptimal, and I am 
> wondering if there is anyone on the list that could take my scans and 
> convert them into 2 color bitmaps of the correct size such that I could 
> import.  When I tried to convert, the difference between light green and 
> dark green essentially removed most of the traces.
> 
> Jim
> 
> 
> -- 
> Jim Brain
> br...@jbrain.com
> www.jbrain.com
>