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  • 5 star 25 ( 44% )
  • 4 star 29 ( 51% )
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  • Basic Cheap OBD adapter

    posted by tz2026 on 02/04/2009
    0

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:

    Cheap for ELM with bluetooth

    Small/portable (no long or awkward cables)

    BT range is long enough. (Laptop, garage, and my n810).

    Does the basic OBD functions well

    Cons:

    No documentation (including the internal ELM327 of which there are a few DIFFERENT versions or the BT passkey of 0000, or what the leds signify)

    The particular ELM327 as implemented can't do ATMA (monitor all) with headers on for very long a not-very-heavily loaded J1850 bus. I don't know what baud rate it uses to connect to the BT, but I have a different ELM that is able to do this without a problem (38400 v.s. 9600 baud jumpered). A more expensive device which does BT OBD which emulates the ELM327 and adds a lot of features is easily able to do this.

    Gets multiple responses for a request (which can confuse things especially with the headers off)

    OtherThoughts:

    Works adequately for basic OBD-II functions (though the multiple responses are annoying)

    Bottomline:

    Very good for basic use considering the compact size and low price.

    Look for something more advanced if you need to go much beyond the basics.

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