A cable for SMS phones etc
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Posts: 46,084
I have been reading this list and surfing the web for some info on
controlling a GSM phone from a stamp. So far I have managed to find various
links etc on various cables. I have even went and bought a commercial cable
that seems to work with my phone with various bits of software but I am
unable to get it to work with a terminal package. the reason for the
terminal package is if I can do this with AT commands I should be able to
get it to do it using a serial out on a stamp with basically the same
commands. I realise there is another format of talking to the phone but my
research (and I would love to be corrected on this) has shown that you can
apparently use simple AT commands. I am not however trying to use the phone
as a modem. Simply send and recieve SMS messages
For the record I am using a Nokia 5110 as my test phone
Hence:
I have found a couple of sites with home made data cables etc and have
intentions of building one using a MAx3232 chip. I was wondering if some of
you would like to provide a link with a build it yourself data-cable type
web page that you have used to build a succesful design....
And I am confused as to the format of communications to the phone. Is it 7
or 8 bit at 9600 or what?
I would love to hear from anyone (on or off the list) about any of the above
of if you can offer any further links or info.
Warmest regards, Peter
controlling a GSM phone from a stamp. So far I have managed to find various
links etc on various cables. I have even went and bought a commercial cable
that seems to work with my phone with various bits of software but I am
unable to get it to work with a terminal package. the reason for the
terminal package is if I can do this with AT commands I should be able to
get it to do it using a serial out on a stamp with basically the same
commands. I realise there is another format of talking to the phone but my
research (and I would love to be corrected on this) has shown that you can
apparently use simple AT commands. I am not however trying to use the phone
as a modem. Simply send and recieve SMS messages
For the record I am using a Nokia 5110 as my test phone
Hence:
I have found a couple of sites with home made data cables etc and have
intentions of building one using a MAx3232 chip. I was wondering if some of
you would like to provide a link with a build it yourself data-cable type
web page that you have used to build a succesful design....
And I am confused as to the format of communications to the phone. Is it 7
or 8 bit at 9600 or what?
I would love to hear from anyone (on or off the list) about any of the above
of if you can offer any further links or info.
Warmest regards, Peter
Comments
So far, I haven't been successful in sending SMS directly from
the stamp but I can point you to different links that helped me
move my research forward.
You should look at: http://www.daniel-hertrich.de/s25_hplx/
the schematics should probably work also for the stamp. So far,
I've used a commercial cable and I also tried connecting directly
to the mbus of the phone(only got garbage though).
I will add random bookmarks:
http://www.emesystems.com/BS2rs232.htm
http://multivac.fatburen.org/gnokii/6110-mailarchive/msg00019.ht
ml
http://multivac.fatburen.org/gnokii/6110-mailarchive/msg00117.ht
ml
http://multivac.fatburen.org/gnokii/6110-mailarchive/msg00045.ht
ml
http://gatling.ikk.sztaki.hu/~kissg/gsm/at+c.html
http://www.atrox.at/datacable/dlr3/
commercial link but a proof that it's possible:
http://www.dps-promatic.com/gsm.html
also: http://www.westplex.co.za/RTCU.html
http://www.ee.washington.edu/circuit_archive/circuits/
Of course, I hope it's only a matter of time before I figure it out,
and I will post further discoveries.
Btw, I got hyperterminal talking to a motorola timeport using a
cable sold by softgsm. Of course it only works through softgsm's
virtual modem, and when I tried to reproduce the same data
(recorded with portmon) inside the stamp, it didn't work. Some
phones like the nokia 3210 uses straightforward serial datas
and doesn't need a virtual modem installed on the pC in order to
send SMS to the phone. So far I found a cheap solution for my
project by using DTMF, but the type of data is very limited. Anyone
interested in using that can get the DTMF kit from parallax and a
pair of headsets for their phone(necessary , if not the phone
won't pick up automatically). With this, it makes a very fiable
remote control for the stamp.
Sorry if I went off the subject a bit... and if my links are not so well
organised. just hope it was useful for someone...
And I will be very greatful if anyonelse could also share their
links..
thomas charveriat.