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Thread: sample for in-car OBDII output on 20x4

  1. #21
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    Why would it be such a problem to program for? Especially since I'll be using a 486 linux box as the "controller", programming won't be a big issue at all.

    The cost of the 7" widescreen is a little much for me, actually I really don't want to spend any more money on this than I have already spent... So I think that the whole dash replacement will have to wait. Since I already have the LCDs I think that I'm gonna try to put them to good use

    I will want to (sometime in the future) get a nice widescreen LCD and pop it into the dash, but that will have to wait for later.

    Once I get all of this new hardware installed I'll pop some picks up and let you all know how it's going. I'm still trying to find out all that I can about the OBDII specs... Not much luck there.
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  2. #22
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    there is a wealth of information about obdII, I might be able to get intouch with someone that could get me some data sheets..

    ill get back to you..

  3. #23
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    Yeah that would be awesome!!

    I'm particularily interested in finding out more about:

    49 RUNNING TOTAL OF FUEL DELIVERED (MSB)
    50 RUNNING TOTAL OF FUEL DELIVERED (LSB) usec = ([n49] x 256 + [n50])*15.26

    51 RUNNING TOTAL OF DISTANCE TRAVELED Miles = n/2000
    52 ENGINE RUNNING TIME IN SECONDS (MSB)
    53 ENGINE RUNNING TIME IN SECONDS (LSB) Sec's = ([n52] x 256 + [n53])


    Also to know if the clutch pedal is pushed, if cruise control is enabled, if the parking brake is on, and generally anything else interesting

    If you can help me out that would be awesome! I have a '97 Cavalier in case that helps.
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  4. #24
    Low Bitrate backpack09's Avatar
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    dont know how this will help. but, these guys http://pocketlogger.com/ have a pretty cheap palm setup for odbII logging. maybe you could get some info from them? or if someone has one, they could hack the code...

    personally, now that my carputer is up and running...i will be installing this datalogger which is quite a bit more involved than odb2 www.dsmlink.com

    dan

  5. #25
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    Wow, that is actually pretty impressive.

    But unless you're planning on doing some major tuning work to your car... $600USD? Ouch, that's very steep price. I know that all of that information is available on the internet and I've seen some places that explain how to do the same modifications, all you have to get is a way of modifying the ECU and reprogramming it (much much much less than $600). Additionally usually you can just buy performance-enhanced replacement ECUs that already are tuned to offer the best performance for your particular car, again much less than $600. But not nearly as cool I guess

    Unfortunately I don't have one of those two cars mentioned

    Most places that make OBDII products aren't very forthcoming with sharing the information that they obtained, since it is copyrighted and they most likely had to pay for it. I will check around some more though.

    Thanks!
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  6. #26
    Low Bitrate backpack09's Avatar
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    well ive got one of those cars, 95 eagle talon TSI AWD

    and that is the main reason i built my carputer...

    next spring i intend to upgrade my turbo, fuel pump and regulator. at that point i will need this software to adjust my cars running conditions...too bad its 600 bones.

    but i have seen it in action and it is insane what can be done with it...wanna set your rev limitter at 3k? want your car to automaticly reduce throttle when you hit the clutch? want to log EVERYTHING happening in your engine?

    twill be great.
    dan

  7. #27
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    Sounds awesome, but are you sure that you need that in order to get those features? Just seems to me like $600USD is a little high for that sort of functionality, especially since you can find reprogrammed chips for much cheaper.

    I'm just not that rich right now
    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  8. #28
    Low Bitrate backpack09's Avatar
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    the reprogrammed chips dont do anything good for a turbocharged car. they do not leanout or richen the fuel delivery depending on knock. and there are many other features also.... just cant think of em right now.


    but hey, whats 600? i spend that on wheels, on tires,on a turbo hell i spen that about once a quarter on repairs...

    dan

  9. #29
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    gee I wish that I could say "hey, what's $600?"

    IN DEVELOPMENT -- '96 Mustang, lilliput with PII/450 laptop, custom DC-DC power supply, 60GB; Garmin GPS; 802.11g; compact keyboard, small graphical LCDs, OBDII.

  10. #30
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    Hey Telek, tell me... I have seen many different versions of the OBDii interfaces, and it seems that some have far more funtionality than others. Does funtionality depend on the hardware that you use to connect the computer to the ECU? In other words, does the interface allow/restrict the use of various modes? Or is the limitation in the software? I found many programs available that provide the basic information about the ECU, while not providing the ability to actually change, or write, anything (rev limit, speed limiter, etc.). I found a company a while back that was willing to sell me the interface and a fully funtional program for my specific car make, but they wanted over $800 us.

    Also, does the software used have to be specifically bulit for the interface used?

    I have been overwhelmed by the amount of basic information that is available, and the sheer lack of any advanced or specific information. I would like to use my ODB link to monitor some vital stats such as oil presure, coolant temp, voltage, air temp, o2 sensor staus, egr info, but I would also like to control simple parameters, such as the ones mentioned above.

    Clay

    An after thought, does the functionality depend on the car/ecu? I am just not clear about all of this. I am looking into building the obd connection on the scantool.net site.

    Thanks
    System in the works:
    Celeron 850 or PIII 933, SB Live! Value into a stock 4 channel amp, ATI vid, 10.4" sharp LCD w/ allen's controller, Elo SW touchscreen overlay and controller, GPS, TV tuner, FW DVD drive, 4 port serial card, and some other stuff....

    Loads of ideas.

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