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PICList Thread
'[EE]: 2.5 mm plug to DB9F serial cable'
2006\10\10@153724 by Vitaliy

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Hi List,

Does anyone know of a source for a 3-wire serial 2.5 mm stereo plug to DB9
cable? What I'm really after is the pinout (I like to be compatible whenever
possible), unless buying 1000 cables would be cheaper than having them
custom built.

Best regards,

Vitaliy

P.S. GoDaddy blocked MIT's IP once again last Thursday (very annoying). I
resubscribed using a gmail account (thanks for the invitation, Dan!),
hopefully I won't miss another PicList post ever again. :)

2006\10\10@160300 by Harold Hallikainen

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I'm also interested in a source for such a cable. For prototype use, I
made my own, cutting up a Radio Shack cable. Here's the pinout I used:

tip - DB9F-2
ring - DB9F-3
sleeve - DB9F-5
Jumper DB9F-7&8
Jumper DB9F-4&6


Harold


{Quote hidden}

> -

2006\10\11@170514 by Vitaliy

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Harold Hallikainen wrote:
> I'm also interested in a source for such a cable. For prototype use, I
> made my own, cutting up a Radio Shack cable. Here's the pinout I used:
>
> tip - DB9F-2
> ring - DB9F-3
> sleeve - DB9F-5
> Jumper DB9F-7&8
> Jumper DB9F-4&6

Have you been able to find anything at all? How long is your cable? And how
many are you looking for?

You can contact me off-list.

Best regards,

Vitaliy

2006\10\11@171209 by Harold Hallikainen

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{Quote hidden}

Thus far I have not found a supplier. These used to be used on digital
cameras before they went USB. I will eventually need thousands.

Harold


--
FCC Rules Updated Daily at http://www.hallikainen.com - Advertising
opportunities available!

2006\10\11@184144 by Bob Axtell

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Harold Hallikainen wrote:
{Quote hidden}

There is a cable company on the web, I think called "cables to go". If I
recall, they had those.

--Bob

2006\10\11@193748 by Jamie Lawson

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This form of cable comes with some of the Texas Instruments calculators
(the TI-89T for sure) and they do sell them individually. Perhaps someone
at TI can give you a lead on the source.

Jamie

On Wed, 11 Oct 2006, Harold Hallikainen wrote:

{Quote hidden}

> --

2006\10\12@031051 by Per Linne

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Don't know if this link works, but here:

http://www.electroniccomponents.globalsources.com/gsol/I/D-D-sub-manufacturers/b/2000000003868/3000000180798/22675.htm

PerL

{Original Message removed}

2006\10\12@155725 by Vitaliy

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Jamie Lawson wrote:
> This form of cable comes with some of the Texas Instruments calculators
> (the TI-89T for sure) and they do sell them individually. Perhaps someone
> at TI can give you a lead on the source.

I know what you're talking about (I own a TI-89), and the cable in question
doesn't have a 2.5 mm plug (it's smaller, something like 1.5 mm in
diameter). Also, TI-89 does not understand RS232. Their serial cables are
actually converters -- they have electronics inside that convert RS232 to
the proprietary TI protocol.

Best regards,

Vitaliy

2006\10\12@180604 by Jamie Lawson

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On Thu, 12 Oct 2006, Vitaliy wrote:

> Jamie Lawson wrote:
>> This form of cable comes with some of the Texas Instruments calculators
>> (the TI-89T for sure) and they do sell them individually. Perhaps someone
>> at TI can give you a lead on the source.
>
> I know what you're talking about (I own a TI-89), and the cable in question
> doesn't have a 2.5 mm plug (it's smaller, something like 1.5 mm in
> diameter). Also, TI-89 does not understand RS232. Their serial cables are
> actually converters -- they have electronics inside that convert RS232 to
> the proprietary TI protocol.
>
> Best regards,
>
> Vitaliy
>

This is for the TI-89 Titanium. The cable I am using must be from some
other device (I 'thought' it came with the calculator) but the plug is
definitely 2.5mm in diameter. I use this cable for digital I/O to
connect the calculator to an I2C network. I was unaware that the TI cables
incorporated a converter as the Titanium also has a USB interface for
computer communications; hence I do not need the I/O connector for that
use.

Regards,
Jamie

2006\10\12@195506 by Vitaliy

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Jamie Lawson wrote:
>> I know what you're talking about (I own a TI-89), and the cable in
>> question
>> doesn't have a 2.5 mm plug (it's smaller, something like 1.5 mm in
>> diameter). Also, TI-89 does not understand RS232. Their serial cables are
>> actually converters -- they have electronics inside that convert RS232 to
>> the proprietary TI protocol.
>>
> This is for the TI-89 Titanium. The cable I am using must be from some
> other device (I 'thought' it came with the calculator) but the plug is
> definitely 2.5mm in diameter. I use this cable for digital I/O to
> connect the calculator to an I2C network. I was unaware that the TI cables
> incorporated a converter as the Titanium also has a USB interface for
> computer communications; hence I do not need the I/O connector for that
> use.

*Taking my foot out of my mouth*

Jamie, you're absolutely right, the plug is 2.5 mm in diameter. I was
mentally comparing it to the 3.5 mm audio jack, which I assumed was 2.5 mm.

Best regards,

Vitaliy

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