Ot - rs232 - db9
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Posts: 46,084
Gentlemen:
Having been a long subscriber of this list (and a stamp user) I decided
to ask an off topic question.
I am looking for a method or adapter that can be connected to a laptop
computers' RS232 port. Most older laptops have only one RS232 port and I
need two.
My needs are to connect a GPS receiver and a Side Scan Sonar unit to an
older laptop. My purpose for using the older (obsolete/cheap) laptops is
that when the laptop (not waterproof) gets wet with salt water, I can throw it
away and get another one at no great expense. Of course I will protect it
from the elements as best as I can.
The newer of the older laptops have plug in cards which are quite expensive.
But if I could get (or make) an adapter it would solve most of my problems.
The software I am using runs under Windows 95 and 98 only.
I hope someone can help. Thanks
Dick
[noparse][[/noparse]Non-text portions of this message have been removed]
Having been a long subscriber of this list (and a stamp user) I decided
to ask an off topic question.
I am looking for a method or adapter that can be connected to a laptop
computers' RS232 port. Most older laptops have only one RS232 port and I
need two.
My needs are to connect a GPS receiver and a Side Scan Sonar unit to an
older laptop. My purpose for using the older (obsolete/cheap) laptops is
that when the laptop (not waterproof) gets wet with salt water, I can throw it
away and get another one at no great expense. Of course I will protect it
from the elements as best as I can.
The newer of the older laptops have plug in cards which are quite expensive.
But if I could get (or make) an adapter it would solve most of my problems.
The software I am using runs under Windows 95 and 98 only.
I hope someone can help. Thanks
Dick
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
Search Google for "parallel to serial" and "USB to serial"
They are a lot of answers.
Regards
ECO
Original Message
From: "Richard Gurske" <rfgurske@i...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, September 07, 2003 3:13 PM
Subject: [noparse][[/noparse]basicstamps] OT - RS232 - DB9
> Gentlemen:
>
> Having been a long subscriber of this list (and a stamp user) I decided
> to ask an off topic question.
>
> I am looking for a method or adapter that can be connected to a laptop
> computers' RS232 port. Most older laptops have only one RS232 port and I
> need two.
>
> My needs are to connect a GPS receiver and a Side Scan Sonar unit to an
> older laptop. My purpose for using the older (obsolete/cheap) laptops is
> that when the laptop (not waterproof) gets wet with salt water, I can throw it
> away and get another one at no great expense. Of course I will protect it
> from the elements as best as I can.
>
> The newer of the older laptops have plug in cards which are quite expensive.
> But if I could get (or make) an adapter it would solve most of my problems.
>
> The software I am using runs under Windows 95 and 98 only.
>
> I hope someone can help. Thanks
>
> Dick
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
parallel (printer) port. I suspect that you could rather easily jury-rig the
parallel port if need be.
Original Message
From: "Richard Gurske" <rfgurske@i...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, September 07, 2003 6:13 AM
Subject: [noparse][[/noparse]basicstamps] OT - RS232 - DB9
> Gentlemen:
>
> Having been a long subscriber of this list (and a stamp user) I decided
> to ask an off topic question.
>
> I am looking for a method or adapter that can be connected to a laptop
> computers' RS232 port. Most older laptops have only one RS232 port and I
> need two.
>
> My needs are to connect a GPS receiver and a Side Scan Sonar unit to an
> older laptop. My purpose for using the older (obsolete/cheap) laptops is
> that when the laptop (not waterproof) gets wet with salt water, I can
throw it
> away and get another one at no great expense. Of course I will protect it
> from the elements as best as I can.
>
> The newer of the older laptops have plug in cards which are quite
expensive.
> But if I could get (or make) an adapter it would solve most of my
problems.
>
> The software I am using runs under Windows 95 and 98 only.
>
> I hope someone can help. Thanks
>
> Dick
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
The simplist (and cheapest) solution I've found is
to put in a USB based adapter. BAFO makes one, and
I'm very fond of the KeySpan 19W. The KeySpan 49W
has 4 serial ports, which look just like local ports
once the drivers are installed, and works perfectly.
The Belkin one's don't emulate the hand-shake
signals properly, nor do PDA USB interfaces.
HOWEVER -- to do this, you need Win98 or later, or
Win95B. Win95B is an OEM only version, which added
USB support to Win95. Win95 'plain' DOES NOT HAVE
USB support. Win NT 4.0 DOES NOT HAVE USB support
either.
The next most expensive is a PCMCIA card which
has one or two serial ports on it. Again, talk
to the vendor -- drivers for these are
VERY OS version specific. The 'single' port
cards tend to be MUCH easier to interface, and
are quite portable from laptop to laptop.
Finally, SEALEVEL makes ethernet based units which
connect to the ethernet port. But now we're talking
real expense -- $500 to $3,000.
And here's a thought: you could use a Stamp-based
solution to convert one port into two. You'd need
control of the port, since you'll be putting a
'split' protocol on top of the existing application.
You'd need one to three external 232 receivers,
depending on if all three ports (two 'in' and one
'out') could talk at the same time.
Recommendation: Upgrade to Win98 and use USB,
whenever possible.
--- In basicstamps@yahoogroups.com, "Richard Gurske" <rfgurske@i...>
wrote:
> Gentlemen:
>
> Having been a long subscriber of this list (and a stamp user) I
decided
> to ask an off topic question.
>
> I am looking for a method or adapter that can be connected to a
laptop
> computers' RS232 port. Most older laptops have only one RS232 port
and I
> need two.
>
> My needs are to connect a GPS receiver and a Side Scan Sonar unit
to an
> older laptop. My purpose for using the older (obsolete/cheap)
laptops is
> that when the laptop (not waterproof) gets wet with salt water, I
can throw it
> away and get another one at no great expense. Of course I will
protect it
> from the elements as best as I can.
>
> The newer of the older laptops have plug in cards which are quite
expensive.
> But if I could get (or make) an adapter it would solve most of my
problems.
>
> The software I am using runs under Windows 95 and 98 only.
>
> I hope someone can help. Thanks
>
> Dick
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]