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'[PIC]: Interfacing PICs to el cheapo GSM phones'
2002\12\19@083609 by Sean Alcorn - PIC Stuff

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Hi all,

With the wealth of el cheapo GSM phones on the market today, I was
wondering if anyone has successfully interfaced any later models to a
PIC - in order to send SMS messages etc.

You can now buy a whole phone way cheaper than a GSM Modem or GSM
module. :-)

Regards,

Sean

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2002\12\19@084235 by Patrik Husfloen

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Some, like my Nokia 6210 can be interfaced using rs232 and has a special
command set for sending and reading SMS.
I'm not sure if it quailifies of the "el cheapo" requirement though.


/Patrik

Sean Alcorn - PIC Stuff wrote:

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2002\12\19@141202 by Howard McGinnis

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I've got a 873 talking to an Ericsson T39 using SMS to signal an alarm.

Howard

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2002\12\19@153938 by Sean Alcorn - PIC Stuff

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Hi Patrick,

> Some, like my Nokia 6210 can be interfaced using rs232 and has a
> special
> command set for sending and reading SMS.
> I'm not sure if it quailifies of the "el cheapo" requirement though.

No, the 6210 is still a fairly decent phone - at least in this part of
the world, and I've never seen something of it's calibre at a
supermarket checkout for AUD$99 or whatever they are down to these days.

But with the 6210, you need their proprietary data cable don't you?

Regards,

Sean

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2002\12\19@154144 by Sean Alcorn - PIC Stuff

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Hi Howard,

> I've got a 873 talking to an Ericsson T39 using SMS to signal an alarm.

Cool. That's still a fairly decent phone though. And did you need
Ericsson's cable or just the phone? I'll just have to go out and buy
one, I think.

I can get a MODEM with TTL level RS-232, but they are over AUD$500

Regards,

Sean

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2002\12\19@155823 by Spehro Pefhany

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At 07:40 AM 12/20/02 +1100, you wrote:


>Cool. That's still a fairly decent phone though. And did you need
>Ericsson's cable or just the phone? I'll just have to go out and buy
>one, I think.

Shop around for the cable. I picked one up for about US$6 retail
(Ericsson), but around Toronto you're lucky to get it under the
equivalent of US$20 or so.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
spam_OUTspeffTakeThisOuTspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2002\12\19@161759 by Andrew Thoms

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Hi,

I have used 5110 for a project that dials and SMSs when an alarm is
triggered... it was easy to do, same protocol as the 6110 etc.. the
connector was pulled out of a AUD$10 hands free kit... the phones were
obtained for free from employees who had recently upgraded their phones to
newer technology....


Andrew

{Original Message removed}

2002\12\20@014335 by Patrik Husfloen

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Well, I used IrDA for my little experiment, but yeah, there is a
propriatary data cable you have to get, there are "pirate" cables
though, but I haven't had much luck with those

/patrik

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2002\12\20@034727 by dr. Imre Bartfai

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Hello,

I use M35/C35 to send/receive DTMF signals. The only problem is the power
maintenance on which I am working now. Communication seems to be simple
and fine as this phone has a standard AT-modem in it. BTW made by Siemens.

Hereby I wish also to all PicListers a happy and peaceful christmas.

Regards,
Imre


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On Fri, 20 Dec 2002, Patrik Husfloen wrote:

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'[PIC]: Interfacing PICs to el cheapo GSM phones'
2003\01\18@201220 by Kyrre Aalerud
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I'm doing this in a little project.
The main problem with talking to a GSM system that will send and recieve SMS
messages is that most of them will halt as they recieve a message even if
you are doing another action like reading the previous message.  This causes
very erratic behaviour in a system where a lot of SMS'es will be send and
recieved in a short time.

If you only will be sending, or doing send / recieve very infrequently, then
you can safely asume the modem/phone will actually do and perform as
expected.

   KreAture


{Original Message removed}

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