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Thread: Comments on BR3 OBD Reader

  1. #1
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    Comments on BR3 OBD Reader

    After purchasing BR3 OBD reader I have realized that this only works with the supplied software. Lots of software which works on ELM3 based reader will NOT work on BR3 based reader.

    B. Roadman, the engineer behind the BR3 OBD Reader, has donated the interface/specification/code to Linux FreeDiag project. Using this code as a starting point, ELM based software can be modified to work with BR3 chip.

    Many members on this forum have purchased this reader. Has anybody given thoughts on how more software can be ported to work on this reader?

    Thanks,
    - Vikas

  2. #2
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    can you send me the code, im familiar with the elm coding, and probably can figure out the br3 one fairly easy

  3. #3
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    Here's the data structure with a couple sample programs to demonstrate:
    http://www.obddiagnostics.com/obdinfo/info.html

  4. #4
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    Quote Originally Posted by sontakke
    After purchasing BR3 OBD reader I have realized that this only works with the supplied software. Lots of software which works on ELM3 based reader will NOT work on BR3 based reader.

    B. Roadman, the engineer behind the BR3 OBD Reader, has donated the interface/specification/code to Linux FreeDiag project. Using this code as a starting point, ELM based software can be modified to work with BR3 chip.

    Many members on this forum have purchased this reader. Has anybody given thoughts on how more software can be ported to work on this reader?
    I have been struggling with the same problem- I've been trying to get this reader to work on linux using FreeDiag. Unfortunately the FreeDiag project seems to be stalled and doesn't even work with this reader anymore. I am seriously considering writing some software from scratch for it- my project will be for Linux and the Empeg though- so I'm not sure how much it would help you guys. Programming wise it seems like a pretty easy interface- but implementing the OBD-II protocol in general looks nasty. I'll keep everyone updated on what I get accomplished in case there are some Linux hackers here.

  5. #5
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    The FreeDiag mboard (on sourceforge) has few people who have got the software working on the BR3 interface.

    It is pretty frustrating to see that apart from ELM, every other hardware has found yet another way to talk to OBD-II using their own unique method :-( For example, Harrison R&D uses it a scheme in which they convert binary hex digits into ascii bytes! The major disadvantage of ELM is that there is no single chip which can handle all three i.e. ISO, VPW and PWM protocols.

    From my reading, DigitMoto (NOT free) software will work on any ELM based code reader.

    ScanTools.net has quite bunch of free software packages listed. They also have source code for windows based package. It uses "Allegro" based development environment. Not being a PC programmer, I really have no idea how one would go about to create the application from the available source code. I am hoping that smarter people in this forum could take this package and the source code from FreeDiag and marry them together.

    - Vikas

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