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My CarPC in PORSCHE
By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Sa Nov 05, 2005 - 12:59

Hallo Smile

Here are few snapshots of my system running with Linux.
The software which drives everything inside is home made including the interface.

The system first started in summer 2003 with a Playstation's LCD screen and an old pentium overclocked 133 Mhz.


It was hard to make it work but finnaly it worked, the first results were very poor with black and white picture then came the color
but introducing another stability difficulty.



anyway those difficulties have been solved to give this result



After time spent with experiiments at home it was time to put
all the stuff in the car.



I was happy with my thing in car, having music with a multi format able player then i had the idea to be able to stop my car.
There are not so much options, first started thinking about recognizing
dtmf sequences sent to a handy but unfortunately my handy was unable to recognize those sequences through it's port.
So no more options but using then sms.
Now simply sending a sms is ok but reading it's content is something else, more than that it's even harder to recognize the caller ID (i mean for a machine).
That's why i started again experiments at home till it worked fine.
here's the screenshot of what happens when the machine receives the sms.
The picture is too big you can access to it at http://81.56.210.152/capturesms.jpg
In the same time i made something to wear the metal bezel.
Ok don't laugh at this time i was with no more job, hard times so difficult to have a beautiful screen.


Now it was time to put some more software inside.
I wanted a voice synthesis, then i used the Carnegie Melon University
festival project.
I wanted also to have a gps so i started using GPSdrive but i had to let it because that there's no cartography library and the displayed cards are static.
I wanted too that the system was automated so i don't have to bother
with stupid buttons everywhere.

And finally here's the result with the multimedia player XMMS which was good for the task i wanted at this time.


Was it enough ?
No it wasn't as those little systems are so addictive.
More i had more i wanted. Why not now let the computer make some
monitoring ?
Yes good idea, unfortunately the Porsche 944 before 1988 was with no OBD nor pre-OBD so what now ?
I refused to accept the defeat and built my own system to gather informations form the car.

10 channels with a refresh speed of 5000 measures per second.
We are far best from OBD aren't we Frin


The first attempt was to get the air/fuel rate with two ways of displaying.
One with a simple display and another with fine curves displaying what was hapening to the lambda sensor in real time




And today ?
Today i changed every little part but this is for the next part...with still home made interface, with a home made kernel using another hadware
and new features included...



By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Fr Sep 01, 2006 - 01:37

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Message has been edited, Click Here to view/hide original message

Where is my Porsche ?

you may follow my moves on the road using your browser. The very alpha of the tracking through the server works fine. there are not so much points for now as i tested it yesterday at night and quickly this morning while going to office, but the client side will soon be improved with hopefully a better interface to be displayed on the internet. Of course don't expect to follow me whole the time, it's only when i want it to Smile

so to see the car's moves http://www.r-kraft.com/geolocal.php
By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Mo Sep 04, 2006 - 08:21

New interface for the tracker, click on the blue diamonds to see the maps Smile

http://www.r-kraft.com/geolocal.php


By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Sa Sep 16, 2006 - 10:35



new automatic display of the car's position. Refreshed every minute. It's also possible to change scale or access to the last moves when the car is parked.


http://www.r-kraft.com/live.php
By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Mo Okt 30, 2006 - 02:41

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This tiny thing is a small computer able to work with the main one except when i detach it for home use.
To allow to still have minimal informations displayed, i'm building this little satellite computer.

Tmeperatures, accelerometer, data logger and many many other things like interaction with the car. The circuits are totally optocoupled so i'm sure nothing will fry Smile









The board has communications ability with gps usefull for tracking purpose even if the main computer is down, ability to talk with serial port, i2c port, modbus port and even ehternet port. It has also a tiny server aboard and last but not least 90 inputs / outputs able to drive anything. Solenoids, pneumatic or hydraulic devices, servo motors, stepper motors...it is also able to store data on SD or CF memory card

oh yes forgot to mention, it is driven with a lcd touch screen, the one you see on pics Wink
By: Pierre
Rank: Starfleet Captain
Postings: 117
From: n/a
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Posted: Do Nov 02, 2006 - 09:48

Quick attempt to represent my Porsche with the accelerometer





Not prefect, that's right, i'll make some corrections so it can looks as nice as possible with this low resolution but now you can understand better where will go these X, Y and Z axis Smile
 
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