[Ovmsdev] Hi everyone

William Petefish william.petefish at gmail.com
Sat Jun 2 00:11:57 HKT 2012


If anyone needs an OBD2 connector, try
Sparkfun<http://www.sparkfun.com/products/9911>
.

William

On Fri, Jun 1, 2012 at 10:21 AM, R. Scott Perry <spamfree4 at rscott.org>wrote:

> Hi David,
>
> AFAIK, the Volt uses raw CAN, too.  The ELM-based products have no problem
> accessing the primary bus on the Volt.  The real issue is that they cannot
> access the other buses (e.g. SWLAN, DWLAN on pins 12-13), but most tools
> cannot access those.
>
> The reverse engineering tool sounds very, very nice.
>                    -Scott
>
>
>
> On 6/1/2012 10:57 AM, Mark Webb-Johnson wrote:
>
>> David,
>>
>> I, and others, have also had success with CANUSB (http://www.canusb.com/),
>> but that is more expensive that the ElmScan 5 approach.
>>
>> I originally used a cando (http://www.cananalyser.co.uk/**) which is
>> similar but windows-only.
>>
>> These are both CAN tools (not ODBII, but ODBII builds on CAN for modern
>> cars).
>>
>> If you want to do anything custom, the CANUSB is pretty cool. It appears
>> to the operating system as just a USB serial port, with textual protocol,
>> so i easy to script from in Windows, Linux or Mac OSX.
>>
>> The ElmScan 5 is also possible if you just want ODBII, but note that the
>> Tesla DIAG port is raw CAN not ODBII.
>>
>> I'm working on a project called CAN-RE-Tool that supports the CANUSB. It
>> is designed for reverse engineering can buses. Getting real close to a
>> first pre-alpha release, as I know Michael is waiting on it...
>>
>> Regards, Mark.
>>
>> On 1 Jun, 2012, at 9:52 PM, R. Scott Perry wrote:
>>
>>  Hi David,
>>>
>>> There are a number of different cables that should work.
>>>
>>> I use the ElmScan 5 (at Amazon, it is under US$30).  The OBDLink SX
>>> (~US$50) is another good choice.
>>>
>>> The ElmScan 5 uses the ELM327 chipset, which cannot handle a connection
>>> to the computer higher than 500kbps, which sometimes causes a small amount
>>> of data to be lost.  Also, the ELM327 chipset has an issue where it
>>> sometimes does not record all the data (if the first byte of data is
>>> between 1 and 8, it only includes that number of bytes of data, even if
>>> there is more).  I believe the OBDLink SX (which uses a different chip that
>>> is compatible with the ELM327) doesn't have those issues.
>>>
>>> If you are planning to do more with the ODB2 port, there are lots of
>>> other options (e.g. ones that display data on a screen for you).
>>>                      -Scott
>>>
>>>
>>> On 6/1/2012 3:01 AM, David Peilow wrote:
>>>
>>>> Hi,
>>>>
>>>> I've just signed up here so it will probably take me a while to get up
>>>> to speed on the work done so far.
>>>>
>>>> First off, can you advise me on what cable I need to obtain to pull logs
>>>> (I saw RScott's program link) and also where to buy one?
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> David
>>>>
>>>>
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>>
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