Data acquisition obd2

  • How do I get data from OBD2?

    To log OBD2 data involves 3 simple steps:

    1. Configure your OBD2 logger with a list of OBD2 PIDs
    2. Connect it in your car via an OBD2 adapter to start logging
    3. Extract the SD and decode the data via the free software/API

  • How does OBD communicate?

    Modern OBD implementations use a standardized digital communications port to provide real-time data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow a person to rapidly identify and remedy malfunctions within the vehicle..

  • How does OBD2 work?

    An OBD2 automotive scanner connects to the car's diagnostic port located in the driver area.
    They connect to a mobile app on your smartphone via Bluetooth or Wi-Fi.
    The app can read and interpret stored error codes.
    It can also delete error codes once the fault has been rectified..

  • OBD2 Recorder

    The ODB2 data format is a standard SUBPROTOCOL for the CANBus bus.
    It includes several different bus systems, including ODB, CAN-II, and DTC.
    The ODB2 data format includes CAN IDs as well as the CAN bus.
    CAN messages have up to 8 bytes of data..

  • What data CAN be extracted from OBD2?

    What Data is Available from OBD? OBD-II offers a standard way to access many types of data, including: Real-time parameters: RPM, speed, pedal position, spark advance, airflow rate, coolant temperature, etc..

  • What information is on OBD2?

    The 10 OBD2 services (aka modes)
    Mode 1 shows Current Data and is used for looking at real-time parameters like vehicle speed, RPM, throttle position etc.
    Other modes are e.g. used to show/clear diagnostic trouble codes (DTCs) and show freeze frame data..

  • What is OBD database?

    OBD stands for On-Board Diagnostics and is a computer system inside of a vehicle that tracks and regulates a car's performance.
    This on-board computer system collects information from the network of sensors inside the vehicle, which the system can then use to regulate car systems or alert the user to problems..

  • The ODB2 data format is a standard SUBPROTOCOL for the CANBus bus.
    It includes several different bus systems, including ODB, CAN-II, and DTC.
    The ODB2 data format includes CAN IDs as well as the CAN bus.
    CAN messages have up to 8 bytes of data.
  • While OBD2 PID information is only available on-request by OBD2 test equipment, the J1939 protocol is used in most heavy-duty vehicles as the basic means for communicating CAN traffic - meaning data is broadcast continuously.
OBD 2 data logging can be used to monitor a variety of engine parameters, including engine speed, throttle position, and engine temperature. OBD2 data logging can also be used to monitor emissions-related data, such as exhaust gas temperature and oxygen sensor readings.
To log OBD2 data involves 3 simple steps: Configure your OBD2 logger with a list of OBD2 PIDs. Connect it in your car via an OBD2 adapter to start logging. Extract the SD and decode the data via the free software/API.

How do I log OBD2 data to an 8-32 GB SD card?

The CANedge lets you easily log OBD2 data to an 8-32 GB SD card.
Simply specify what OBD2 PIDs you wish to request, then connect it to your car via an OBD2 adapter to start logging.
Process the data via free software/APIs and our OBD2 DBC.

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How do I request an OBD2 PID?

Requesting OBD2 PIDs is relatively simple:

  1. An OBD2 scan tool or OBD2 data logger sends a specific CAN frame (the OBD2 request) and if the car supports the OBD2 PID
  2. it responds with a single CAN frame

In contrast, UDS requests may require performing transport protocol requests.
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How does OBD2 work?

In other words, OBD2 lets you analyze data from you car easily - in contrast to the OEM specific proprietary raw CAN data.
In principle it is simple to log the raw CAN frames from your car.
If you e.g. connect a CAN logger to the OBD2 connector, you'll start logging broadcasted CAN bus data out-the-box.

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What is an extended OBD2 ID?

The UDS service ID (SID) and the data identifiers (DID) are sometimes combined into one ID and referred to as an 'extended OBD2 PID' - for example 0x220101.
Recording UDS data via service 0x22 requests is sometimes used to extract car data beyond what is available through service 01 OBD2 PID requests.


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