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'[EE]: tracking system. was: Car burglar alarm,'
2002\02\11@041218 by Trevor Page

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Sorry if this is something that's been talked about before (I'm relatively
new to the list) but has anyone here actually attempted some sort of DIY car
tracking system? I've pondered a few ways of doing this, such as using a
simple direction-finding method using a transmitter, to implementing a
system whereby a coordinates from a GPS receiver are transmitted over a
radio system of some sort. However, I guess that in practice it would be
pointless saving money by making one and not just buying a commercial one -
an approved tracker will save me more money on car insurance I suppose...

The thread about using CCD cameras interests me greatly - for a long time
I've thought about building a system where alarm activation could be
performed by image processing, and storing of images performed using a
solid-state memory device hidden inside the vehicle somewhere. Tony Nixon's
interesting robot application has really inspired me to start thinking about
this.

Back to lurking...

Trev


> {Original Message removed}

2002\02\11@050636 by Mahmood Elnasser

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I did this for a company, used a gps receiver and send the data as SMS
by GSM modem. I used a pic to control the 2 modules.


{Original Message removed}

2002\02\11@051710 by ael Pettersson

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> Sorry if this is something that's been talked about before (I'm relatively
> new to the list) but has anyone here actually attempted some sort of DIY
car
> tracking system? I've pondered a few ways of doing this, such as using a
> simple direction-finding method using a transmitter, to implementing a
> system whereby a coordinates from a GPS receiver are transmitted over a
> radio system of some sort. However, I guess that in practice it would be
> pointless saving money by making one and not just buying a commercial
one -
> an approved tracker will save me more money on car insurance I suppose...

Sounds like something that I'm using in my car.
I'm a radio amateur and we have something that calls APRS,
automatic position reporting system.

There is a very small hardware that uses the 16f84 on http://www.byonics.com.
This hardware takes the gps position in nmea and transmits this with the
help of a radio.
More about aprs one could find at http://www.aprs.net
To see where different radio amateurs is, http://www.findu.com.

The problem with sending the position via radio is the need of a receiver
that hears
the transmitter. A better way might be a gsm module that can send a sms with
your position.

/regards

Michael Pettersson
SM6XOG

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2002\02\11@053015 by Trevor Page

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Interesting. I am - well, I used to be a radio amateur (GW0VSC) but haven't
touched the key for a very long time I'm afriad! I'm not even familiar with
the APRS system - but I'll certainly be learning about it. Many thanks for
the links. There have probably been a lot of new developments in the field
of AR that I'm not even familar with.

If my amateur license would permit me to operate such an unattended
transmitter for tracking use then that would be something to look into -
though I'm quite certain that there are great restrictions on operating such
a 'station' in the UK.

I did originally wonder if I could use a cheap mobile phone or something
attached to a modem of some kind to transmit GSM data. I know zilch about
GSM modems so it's time to do some searches on Google...

Many thanks for the advice all.

Trev


> {Original Message removed}

2002\02\11@053018 by Alexandre Domingos F. Souza

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       Ugh...

>Sorry if this is something that's been talked about before (I'm relatively
>new to the list) but has anyone here actually attempted some sort of DIY
>car tracking system? I've pondered a few ways of doing this, such as using a
>simple direction-finding method using a transmitter, to implementing a
>system whereby a coordinates from a GPS receiver are transmitted over a
>radio system of some sort. However, I guess that in practice it would be
>pointless saving money by making one and not just buying a commercial one -
>an approved tracker will save me more money on car insurance I suppose...

       Ugh...There comes an old, long and sad history...

       Ok. Many of you know I live in Brazil. "News" like these are always celebrated here. Not only for the ones who need this kind of accessory, but for the ones who copy it and sell for a rip. And this is how this history goes...

       I made it. It was just simple! A modified cellular phone, one TCM3105 (yep, that nice modem used in BAYCOMM), a GPS module and a 8751 processor to control everything. The entire circuit was simpler than stole a candy from a child. The 8751 took the NMEA output of the GPS (which is nothing more than current-level RS232), processed it to get latitude, longitude and speed, encoded it with the TCM3105 and sent thru the cell phone. In an event of the car being stolen, or the owner sequestred (is it the right english word? Or would it be "abducted"? Ah, I think "Rape" is the right verb...Oh, 08:30am in a sunday, lemme sleep!), the car would open up the cellular connection, and start transmiting the position, along with audio - if desired - of inside the car and the "porta malas" (brazilian friends, help me with this word, I think is "truck"). Of course, the reverse would also be possible - you could dial in the system in the car, and get it's position at any time. Since there was a password for that - which only the owner would know - there was no danger of his wife "spying" what the hell he was doing at 02:00a out of his home :o)

       No need to tell - Project ready to sell, the plans were robbed.

       I was planing an entire company - would provide the sales, installation, maintenance, survellance, and help the policy in case of stealing. Almost everything was done. But the project was robbed, and cannot protect itself ;o) In less than a month, it was produced and sold here, and everywhere.

       Of course, I cannot prove this is MY project. Maybe just my idea. Maybe just a coincidence.

       But here was my history. The project who almost was sucess ;o)

       Life is harsh sometimes...


---8<---Corte aqui---8<----

Alexandre Souza
spam_OUTtaitoTakeThisOuTspamterra.com.br
http://planeta.terra.com.br/lazer/pinball/

---8<---Corte aqui---8<----

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2002\02\11@084904 by mark

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Guess it works only on analog (AMPS) cell phones ...

On 11 Feb 2002 at 8:29, Alexandre Domingos F. Souza wrote:

{Quote hidden}

---
Marcelo Puhl
Mensa Brasil member
http://www.mensa.com.br

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2002\02\11@102707 by Roman Black

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Alexandre Domingos F. Souza wrote:

>         Ugh...There comes an old, long and sad history...
>
>         Ok. Many of you know I live in Brazil. "News" like these are always celebrated here. Not only for the ones who need this kind of accessory, but for the ones who copy it and sell for a rip. And this is how this history goes...
>
>
>
>         No need to tell - Project ready to sell, the plans were robbed.
>
>         I was planing an entire company - would provide the sales, installation, maintenance, survellance, and help the policy in case of stealing. Almost everything was done. But the project was robbed, and cannot protect itself ;o) In less than a month, it was produced and sold here, and everywhere.
>
>         Of course, I cannot prove this is MY project. Maybe just my idea. Maybe just a coincidence.
>
>         But here was my history. The project who almost was sucess ;o)
>
>         Life is harsh sometimes...

Wow! I bet that really hurt. Are you sure
there was no misunderstanding, that they
actually stole? Sometimes when something is
suspicious the "worst" is what people tend to
believe...
-Roman

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2002\02\11@135248 by Alexandre Domingos F. Souza

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>Wow! I bet that really hurt. Are you sure
>there was no misunderstanding, that they
>actually stole? Sometimes when something is
>suspicious the "worst" is what people tend to
>believe...

       It was very simple, Roman: Everything was the same. Hard to tell that it wasn't stolen. But it happens...Me and my big tongue ;oPPP

       It wasn't the first time. Years ago, I was into VR ressearching. I made a helmet with stereo vision (wow, expensive LCDs), for a local company. One night, in a bar table, not only I described how it worked, but also made some draws in the paper that covered the table. Guess what? In 2 weeks, front page of the local computer newspaper: Virtual Reality Ressearch in *******. A knew people with a knew helmet in the head, and the rest is history.

       Every man who developed technology, has some stories to tell ;o)


---8<---Corte aqui---8<----

Alexandre Souza
.....taitoKILLspamspam@spam@terra.com.br
http://planeta.terra.com.br/lazer/pinball/

---8<---Corte aqui---8<----

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