Cell phone interface for Parallax Stamp projects
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Hello. Due to the portability of the Parallax Stamp, I have been
trying to develop a few projects that will interface with my car. I
would like it to call up my pager and report information. Due to
this, I need to know if anyone has found a way to interface the Stamp
with a Cellular phone OR a HAM Packet Radio system. Has anyone done
this? Or does anyone know where I may find infomation on how to go
about this?
Also, has anyone else done any projects interfacing an automobile
with the Stamp?
Thanks for any help you all can offer.
Best of Regards,
Todd
trying to develop a few projects that will interface with my car. I
would like it to call up my pager and report information. Due to
this, I need to know if anyone has found a way to interface the Stamp
with a Cellular phone OR a HAM Packet Radio system. Has anyone done
this? Or does anyone know where I may find infomation on how to go
about this?
Also, has anyone else done any projects interfacing an automobile
with the Stamp?
Thanks for any help you all can offer.
Best of Regards,
Todd
Comments
I'd say you would want to consider making the Stamp act as some sort of
'smart' terminal and hook it to a TNC. To emulate the TNC function would
be serious over-kill. Just a thought.
Michael
KD6BMV
contacttodd@y... wrote:
> Hello. Due to the portability of the Parallax Stamp, I have been
> trying to develop a few projects that will interface with my car. I
> would like it to call up my pager and report information. Due to
> this, I need to know if anyone has found a way to interface the Stamp
> with a Cellular phone OR a HAM Packet Radio system. Has anyone done
> this? Or does anyone know where I may find infomation on how to go
> about this?
>
> Also, has anyone else done any projects interfacing an automobile
> with the Stamp?
>
> Thanks for any help you all can offer.
>
> Best of Regards,
>
> Todd
>Having been a ham for a few years and run packet for most of that time,
>I'd say you would want to consider making the Stamp act as some sort of
>'smart' terminal and hook it to a TNC. To emulate the TNC function would
>be serious over-kill. Just a thought.
FWIW, one of the HAM websites has a PIC TNC, as I remember.
>Michael
>KD6BMV
>
>contacttodd@y... wrote:
>
> > Hello. Due to the portability of the Parallax Stamp, I have been
> > trying to develop a few projects that will interface with my car. I
> > would like it to call up my pager and report information. Due to
> > this, I need to know if anyone has found a way to interface the Stamp
> > with a Cellular phone OR a HAM Packet Radio system. Has anyone done
> > this? Or does anyone know where I may find infomation on how to go
> > about this?
> >
> > Also, has anyone else done any projects interfacing an automobile
> > with the Stamp?
> >
> > Thanks for any help you all can offer.
> >
> > Best of Regards,
> >
> > Todd
I suggest you go to Parallax.com and download their
"Cermetek Modem AppKit" info and software. This modem
is a tiny unit and works great with a cell-phone. I
use it to send data at 1200 baud without any problems.
I have had it call a pager and report voltage levels
as part of a monitoring system. (I use a 3 Watt analog
phone)
Andy
> > > Hello. Due to the portability of the Parallax
> Stamp, I have been
> > > trying to develop a few projects that will
> interface with my car. I
> > > would like it to call up my pager and report
> information. Due to
> > > this, I need to know if anyone has found a way
> to interface the Stamp
> > > with a Cellular phone OR a HAM Packet Radio
> system. Has anyone done
> > > this? Or does anyone know where I may find
> infomation on how to go
> > > about this?
> > >
> > > Also, has anyone else done any projects
> interfacing an automobile
> > > with the Stamp?
> > >
> > > Thanks for any help you all can offer.
> > >
> > > Best of Regards,
> > >
> > > Todd
>
>
>
>
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> >Having been a ham for a few years and run packet for most of that time,
> >I'd say you would want to consider making the Stamp act as some sort of
> >'smart' terminal and hook it to a TNC. To emulate the TNC function would
> >be serious over-kill. Just a thought.
>
> FWIW, one of the HAM websites has a PIC TNC, as I remember.
>
You do, in fact, remember Bruce anf the site is www.tapr.org
Mark Hillier, VE6HVW
President, HVW Technologies Inc.
Canadian Distributors of Parallax Products and other Neat Stuff
Tel: +403-730-8603 Fax: +403-730-8903
http://www.hvwtech.com
have considered connecting a GPS receiver with Packet radio or a cell
phone so if the
vehicle is stolen the system would report it's current location. Motorola
cell phones have an interface and communication protocol to send the
phone commands. This could be a command to dial 555-1212 for example. The
interface uses some kind of
serial connection but there is not much info on the net related to this.
It does work, a PC-Card cellular modem in my laptop dials numbers on a
flip-phone without difficulty. The same connector on portable/mobile
Motorola phones carries many data lines and audio signals, if you can
figure it out that would sure make a nice project.
-William
contacttodd@y... wrote:
> Hello. Due to the portability of the Parallax Stamp, I have been
> trying to develop a few projects that will interface with my car. I
> would like it to call up my pager and report information. Due to
> this, I need to know if anyone has found a way to interface the Stamp
> with a Cellular phone OR a HAM Packet Radio system. Has anyone done
> this? Or does anyone know where I may find infomation on how to go
> about this?
>
> Also, has anyone else done any projects interfacing an automobile
> with the Stamp?
>
> Thanks for any help you all can offer.
>
> Best of Regards,
>
> Todd
>Myself and a friend constructed a car alarm last October. Since then we
>have considered connecting a GPS receiver with Packet radio or a cell
>phone so if the
>vehicle is stolen the system would report it's current location.
This sounds like a great application for APRS (Automatic Position Reporting
System), a GIS that allows real time tracking of GPS equipped vehicles.
Hams have been using this for years to track everything from vehicles to
near space balloons. Look here for info:
http://www.qsl.net/kd4rdb/aprs.htm
On this page under 'Trackers' look at the Tiny Trak. It'a PIC based
Transmit only TNC thats perfect for GPS trackers. Works with the AX.25
packet protocol which these days can be decoded with a sound card. Bear in
mind that to use any of this on amateur radio frequencies you need a licence.
Duncan
an RS-232 interface cable as an accessory. Most of these cell phones
turn into modem like devices, emulateing an AT command set. so you
don't need a modem, write your stamp program as if it is connecting to
the other computer via a dialup modem. (warning, Sprint PCS sells these
cables w/ software for $100, but if you go to manufactur web sites, and
third party sites, you can typically get these cable between $25 and $50)
If your cell phone does not support this mode, you can allways use DTMF
to transmit limited amounts of information via an audio interface. (if
your cell phone has a headset option through a 2.5mm jack, or on nokia
phones via a $5? adapter, then you could use this to send/receive DTMF
or if you have a FSK or simillar modem audio.)
some hi-end phones support IRDA, i am unfamilliar with regards to the
negotiation of the speed of such a connection. it may be possible to
utilize this, but haven't looked at the specs.
nearly all cell phones have accessory cables which allow you to connect
a modem/fax or any POTS device. you can purchase a POTS line interface
(or roll your own, check out Nuts and Volts, or Electronics Now.) then
use the stamp or DTMF tone generator/detector to transmit and receive
data.
if you don't want to buy the cable and have a hackable phone, connect
the keypad to a i/o expander, so you can dial out with the stamp, and
hook the speaker/microphone up to the stamp's DTMF in/out or use a DTMF
encoder and decoder chip set.
just some ideas
joshua
Excerpts from Stamp_List: 19-Sep-100 [noparse][[/noparse]basicstamps] Cell phone in.. by
contacttodd@y...
> Hello. Due to the portability of the Parallax Stamp, I have been
> trying to develop a few projects that will interface with my car. I
> would like it to call up my pager and report information. Due to
> this, I need to know if anyone has found a way to interface the Stamp
> with a Cellular phone OR a HAM Packet Radio system. Has anyone done
> this? Or does anyone know where I may find infomation on how to go
> about this?
Thanks for your information, that's exactly what I was
looking for! I am trying to build an alarm for my
automobile that will interface with a cell phone. If
someone steals my car, I want the ability to dial up
the car and turn it off. If you have anymore ideas on
how to better develop my concept, please let me know.
Your advice was excellent, I would love to hear more
input if you have the time.
Thanks again!
Todd
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>Joshua,
>
>Thanks for your information, that's exactly what I was
>looking for! I am trying to build an alarm for my
>automobile that will interface with a cell phone. If
>someone steals my car, I want the ability to dial up
>the car and turn it off. If you have anymore ideas on
>how to better develop my concept, please let me know.
>Your advice was excellent, I would love to hear more
>input if you have the time.
>
>Thanks again!
>
>Todd
Good Idea, but the reason something like this isn't on
the market... Suppose that when you turned your car
"OFF", the robber was crossing an intersection, railroad,
or on an 8-lane hwy and was killed, or killed someone
else because of your actions of turning the car off.
YOU my friend would be charged with vehicular homicide.
Beau Schwabe IC Mask Designer
National Semiconductor Network Products Division
500 Pinnacle Court, Suite 525 Mail Stop GA1 Norcross, GA 30071
Beau Schwabe wrote:
>
> At 11:53 AM 9/19/00 -0700, you wrote:
> >Joshua,
> >
> >Thanks for your information, that's exactly what I was
> >looking for! I am trying to build an alarm for my
> >automobile that will interface with a cell phone. If
> >someone steals my car, I want the ability to dial up
> >the car and turn it off. If you have anymore ideas on
> >how to better develop my concept, please let me know.
> >Your advice was excellent, I would love to hear more
> >input if you have the time.
> >
> >Thanks again!
> >
> >Todd
>
> Good Idea, but the reason something like this isn't on
> the market... Suppose that when you turned your car
> "OFF", the robber was crossing an intersection, railroad,
> or on an 8-lane hwy and was killed, or killed someone
> else because of your actions of turning the car off.
>
> YOU my friend would be charged with vehicular homicide.
>
> Beau Schwabe IC Mask Designer
> National Semiconductor Network Products Division
> 500 Pinnacle Court, Suite 525 Mail Stop GA1 Norcross, GA 30071
Beau·Schwabe@a...
> Good Idea, but the reason something like this isn't on
> the market... Suppose that when you turned your car
> "OFF", the robber was crossing an intersection, railroad,
> or on an 8-lane hwy and was killed, or killed someone
> else because of your actions of turning the car off.
>
> YOU my friend would be charged with vehicular homicide.
i don't doubt that there would be a strong legal case for wrongful death
or similar arguement.
But i'm fairly sure that this does exsist on the market. it is
typically marketed as an anti-car jacking device.
when you are car-jacked, you leave the car and press another remote in
your pocket. the car can be driven two minutes or so, and then locks
the doors, disengages the ignition, and honks the horn/siren or similar
attention grabing device.
i haven't been able to find this feature on a commercial alarm. perhaps
they have been taken off the market, or it's just a figment of my
imagination.
so all this is for educational purpose only. consult your lawyer,
doctor or psycic to make sure this is legal...
joshua
Beau·Schwabe@a...
> Good Idea, but the reason something like this isn't on
> the market... Suppose that when you turned your car
> "OFF", the robber was crossing an intersection, railroad,
> or on an 8-lane hwy and was killed, or killed someone
> else because of your actions of turning the car off.
>
> YOU my friend would be charged with vehicular homicide.
True, it is dangerous to shut down the engine. What if it was drastically
slowed down 30 seconds after you left the car by reducing the fuel? A stamp
could be programmed to slow down the engine 30 seconds after the seat belt
is removed by controlling a solenoid blocking the fuel line with a small
bypass line in parallel with the blocking solenoid. Most car jackers
wouldn't put the seat belt on, so if your Stamp monitored the drivers seat
belt, it could prevent starting without it, or shut down after a short time.
You would have to make sure you put it back on if you take it off to get
your wallet or something.
Lets see the guy get away while only being able to drive 20 MPH, oh yeah,
and the horn going off!
1) My low-tech antitheft device on a 1979 Mazda RX-7 was a hidden
toggle switch on the electric fuel pump. With the pump switched off,
the car would run for a few blocks and then die. Until Beau's comment,
I didn't realize what an adverse legal position I could be in.
2) If someone really wants your car, they will just tow it away.
Here in LA that means your positional system might help locate the
frame in a chop shop.
Dennis
Beau Schwabe wrote:
> At 11:53 AM 9/19/00 -0700, you wrote:
> >Joshua,
> >
> >Thanks for your information, that's exactly what I was
> >looking for! I am trying to build an alarm for my
> >automobile that will interface with a cell phone. If
> >someone steals my car, I want the ability to dial up
> >the car and turn it off. If you have anymore ideas on
> >how to better develop my concept, please let me know.
> >Your advice was excellent, I would love to hear more
> >input if you have the time.
> >
> >Thanks again!
> >
> >Todd
>
> Good Idea, but the reason something like this isn't on
> the market... Suppose that when you turned your car
> "OFF", the robber was crossing an intersection, railroad,
> or on an 8-lane hwy and was killed, or killed someone
> else because of your actions of turning the car off.
>
> YOU my friend would be charged with vehicular homicide.
>
> Beau Schwabe IC Mask Designer
> National Semiconductor Network Products Division
> 500 Pinnacle Court, Suite 525 Mail Stop GA1 Norcross, GA 30071