Yes I know there is a lot of diagrams for cables but I meant "How do you all
make the physical connector to fit the bottom of the phone" :-0

-----Original Message-----
From: Dennis Noordsij [mailto:dennis.noordsij@WIRAL.COM]
Sent: Sunday, October 14, 2001 23:28
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: SMSing


On Sunday 14 October 2001 16:01, you wrote:
> As a amtter of interest, how does everyone make a connector to plug onto
> the bottom of the phone? That was the main reason for buying the cable for
> me?

Small list:

http://fp.marknatalie.f9.co.uk/ff/make_your_own_mobile_data_cable.htm

http://www.versamart.com/Nokia5110/nokia5110datacommunication.shtml

http://www.atrox.at/datacable/contact/

And then there's www.google.com :-)

Goodluck
Dennis



> -----Original Message-----
> From: Dennis Noordsij [mailto:dennis.noordsij@WIRAL.COM]
> Sent: Sunday, October 14, 2001 22:22
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [OT]: SMSing
>
> On Sunday 14 October 2001 09:10, you wrote:
> > Thanks. By the level switching cable do you mean using say a max232
chip?
>
> I
>
> > can buy a data cable for the phone complete with some basic software to
> > send sms's from a PC so I was going to buy the cable that way. It simply
> > plugs into the serial port on the PC. From there I was going to just
> > replace the PC with a PIC and as mentioned a MAX232
>
> Hi,
>
> here's my 2 cents worth :-)
>
> The level shifter is to be able to communicate with the PC serial port.
The
> Nokia data cable you are talking about has exactly that inside it (max232
> or similar). However, if you are doing PIC <-> phone directly there is no
> need to first level shift to PC serial port levels and then shift back
down
> to Nokia phone levels. I.e. why the mediator? Do a search on the web for
> home-built Nokia data cables, and they're all very simple circuits with a
> direct mapping of phone pins to serial pins with the max232 in the middle.
>
> You should be able to connect your PIC directly to those pins, since you
> have
> no need for the PC. Thus, no need for a max232 circuit or data cable.
>
> Then all that's left is bit banging serial commands or using a usart if
> your PIC has one.
>
> (Someone please correct me if I'm totally wrong :-)
>
> Goodluck, and do drop some status reports off later, a friend of mine
wants
> to build a similar circuit :-)
>
> Regards,
> Dennis

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