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Thread: Th!nk City EV datalogging

  1. #1
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    Th!nk City EV datalogging

    As a student I'm currently writing my thesis on EV usage in Real life. In which the Real Life consumption of energy and so on are really interesting. Within 3 month a total of 20 Th!nk City cars will be driving around 5 days a week. At the moment we're running 1 Th!nk City.

    This project is carried out in Holland (the really small country....) so maybe my English is not the best in the world but Iím still learning.

    Whitin this project I'm trying to connect/log the data out of the Th!nk City Can/OBD2.

    The information Iím currently having:
    OBD2 (connector)
    CAN 2.0B
    11 Bit identifier
    ISO 11898

    I'm currently in possession of an 'ELM327' interface. The problem is that none of the known software is capable of connecting with this car/protocol.

    So what would be the most logical steps to get the data that's available on the CAN to my PC?

  2. #2
    SuperMod - OBDII GPS Logger forum
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    obdgpslogger might be worth a look

    Of course, I think that because I wrote it...

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

  3. #3
    mru
    mru is offline
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    Did you have any success connecting to the car?

    I have the same problem and even if I set automatic discovery via
    AT SP 0
    i just got en error when trying to get information via
    0100

    Any hints on this subject?

    Thanks in advance,
    mru

  4. #4
    Variable Bitrate
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    mru, to which car are you trying to connect? (Make, model, model year, engine type)
    And in which country do you live?

  5. #5
    mru
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    Quote Originally Posted by p2psmurf View Post
    mru, to which car are you trying to connect? (Make, model, model year, engine type)
    And in which country do you live?
    To the Th!nk City, its a elector vehicle. AFAIK its the latest version, i can get more details if needed.

    I can provide you with the some logs i created while driving around and while trying to connect to the car.

    The car is currently located in switzerland.

    thanks

  6. #6
    Variable Bitrate
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    I know hybride vehicles have to comply to EOBD and also the electric part can be read, but a full electric car has zero emissions, whatever the circumstances. Whether this has to comply to EOBD? I don't know.
    If it's a 2008 or later, then if (BIG if) it complies with EOBD rules, the protocol is CAN (obligated).

    I seriously doubt if you can log much. There are no specific pids for an electric car.
    Most of the pids are for cars with petrol, gas or diesel engines.
    Leaves you with a few generic pids like Vehicle speed and Battery Voltage.

  7. #7
    mru
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    AFAIK its newer then 2008, its more likely to be 2009.

    The ELM327 supports auto probing, so it should be no problem, right?

    If i specify proto 8 (ISO 15765-4 CAN (11 bit ID, 250 Kbaud)) and try to get an overview about available pids with 0100 i just get CAN ERROR

    Code:
    ELM327 v1.2a
    > AT TP 8
    OK
    >0100
    CAN ERROR
    on the other hand with proto 6 (ISO 15765-4 CAN (11 bit ID, 500 Kbaud)) it seems somehow to work but i can't get an overview about available pids (afaik 0100 is obligatory)
    Code:
    >AT TP 6
    OK
    >0100
    NO DATA
    With auto probing:
    Code:
    >AT TP 0
    OK
    >0100
    SEARCHING...
    UNABLE TO CONNECT

    But it seems that the interface is connected as i get some messages with MA:
    Code:
    0: 00 00 00 00 00 00
    7: 10 27 10 27 10 27 10
    6A 00 00 0A 5F 0A 5D <DATA ERROR
    E0 00 00
    7: 10 27 10 27 10 27 10
    0B 0E 4D
    <DATA ERROR
    7: 10 27 10 27 10 27 10
    00 02 <DATA ERROR
    00
    So what would be the next steps? Any hints?

  8. #8
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    Get (Beg, steel, borrow) a reliable tester with a proven record both for 11-bit and 29-bit can and test the car.
    I think this car is also sold in the USA? That would rule out 250k baudrate as OBD2 only allows 500k.
    Or test your Elm on some Can vehicles. Volvo has been using 29-bit 250k around 2004. I think now there also on 500k because of problems in the USA with OBD2.
    But in the end it looks like your vehicle is NOT compliant.

  9. #9
    SuperMod - OBDII GPS Logger forum
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    ELM327 v1.2a
    one point *two* a? All the recent devices are 1.3 [or 1.4 if they're very, very recent]. I'd suggest checking the device you're using.

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

  10. #10
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    It finaly worked out on our th!nks using PEAK-IT OBD2 connector/USB. Then there are about 15 signals on the can, probably there many more but I working on it.... The original software is called Zebramonitor.....

    Gr basten

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