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Thread: OBD-II to HTTP bridge

  1. #1
    Newbie
    Join Date
    Apr 2009
    Posts
    2

    OBD-II to HTTP bridge

    Hi everybody,

    A simple application that I wrote

    OBD poller

    Basically, what it does is:

    - Starts local HTTP server
    - Reads data from ELM327 connected to a COM port as often as it is requested or at a periodical intervals and passes the data to HTTP server
    - There is a configuration window where the list of sensors to poll and exactly which bits to pass can be configured
    - Other applications can access the data on HTTP server. E.g. Flash (example gauges included)
    - It is a windows application, but should work with very little modifications on other platforms (all the underlying libraries are cross-platform).


    Just thought that it can be useful to someone.

    Unfortunately, I have absolutely no time for any kind of support or future development, but will be happy if someone will decide to take over the project.

  2. #2
    Newbie zvjer's Avatar
    Join Date
    Aug 2005
    Posts
    26
    Is your app reading data directly from ELM327?
    I'm searching the net trying to find apps like your to help me program a "virtual display" for my new Opel. You see I have an "graphics info display" in my car which show airco status, song info, board computer, a little bit of engine diagnostics and so on. When I install a CarPC this display will need to be removed from the car and then I will loose a lot of important information.

    The goal is to create a software on a PC which will (when summoned) show all the same data that the original display shows, but ofcourse on an bigger colour display. When I don't need it, I can just use the PC for other purposes like navigation and other.

    Do you have a little bit of time just to point me in the right direction on how to start extracting the data from the car's obd-ii port and how to recognise which part of data is which information? I would appreciate it very much!

    I already have a working ELM327 (clone) which works (only) with Scanmaster software, and I have a canbus powered Corsa OPC 2007.

    Thank you once more!
    Opel Club Croatia
    Opel Corsa OPC

  3. #3
    SuperMod - OBDII GPS Logger forum
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    Join Date
    Mar 2009
    Location
    Los Angeles
    Posts
    924
    Do you have a little bit of time just to point me in the right direction on how to start extracting the data from the car's obd-ii port and how to recognise which part of data is which information? I would appreciate it very much!
    Grab the Elm327 data sheet from http://elmelectronics.com/thehome.html#ELM327, and read this wikipedia page: http://en.wikipedia.org/wiki/OBD-II_PIDs. That's everything you need to get going.

    You could also read the source from open-source projects that do this. Freediag is one, there are others.

    Alternatively, there's lots of already-existing software if you don't want to write your own, google is your friend.

    Gary (-;
    OBDGPSLogger, for logging OBDII and/or GPS data
    OBDSim, an OBDII/ELM327 software simulator
    mp3car forums: obdgpslogger, obdsim

  4. #4
    Newbie
    Join Date
    Nov 2010
    Posts
    1

    Smile OBD display and including obdpoller

    hey i've been working on a new display for RPM Speed etc (obdpoller is a godsend <3 <3 <3) for me and the locals.

    anyways, when im selling my displays locally, am i able to include obdpoller as freeware? cause i didnt see a EULA.... its unclear if people are able to include it with their own software.

    picture below of my display, its the first version of this one so dont be too harsh on how it looks x_x

    and normally the display just runs fullscreen so u dont see the menus and windows.


  5. #5
    Newbie
    Join Date
    Apr 2009
    Posts
    2
    anyways, when im selling my displays locally, am i able to include obdpoller as freeware? cause i didnt see a EULA.... its unclear if people are able to include it with their own software.
    Absolutely, feel free to do whatever you like.
    Consider it public domain.

    Nice display, btw!

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