Results 1 to 4 of 4

Thread: OBDII vehicle speed acquisition

  1. #1
    Newbie
    Join Date
    Jul 2008
    Posts
    2

    OBDII vehicle speed acquisition

    I am working on a small project that doesn't seem to be so simple anymore.

    I have a data acquisition (USB-1408FS) unit hooked up to a laptop.
    I would like to record vehicle speed from the OBDII port, and input it into the data acq.

    The vehicle is a 2005 Ford truck.

    What is the most efficient way of doing this? There has to be a way, but I can not seem to find a simple way.

    Thanks in advance for your reply.
    Steve

  2. #2

  3. #3
    North of the land of Hey Huns
    Auto Apps:loading...

    Join Date
    Jun 2004
    Location
    Westminster, MD
    Posts
    2,144
    Not entirely sure what you mean by "inputting it into the data acq", but your best bet for reading speed would be to buy an OBD2 tool, such as those sold by http://www.obdpros.com/(This is an ELM unit, which is compatable with all programs supporting the ELM327 and most programs supporting the ELM323) , and connecting via serial (or via a program), and as you can see from http://en.wikipedia.org/wiki/OBD-II_PIDs that list, 010D is the command to send to retrieve vehicle speed.

  4. #4
    Newbie
    Join Date
    Jul 2008
    Posts
    2
    I have an existing data acq unit that I am trying to feed vehicle speed into. The data acq measures a voltage, that is it. I could use one of the many existing components and input vehicle speed into the laptop, however I was initially trying to input the information into the data acq module I already have, even if it would be slightly more work.

    Basicly here is my ideal setup even though it is not efficient.

    OBDII port > Cable > Module that sends command to OBDII and recieves speed data, then outputs the data as a voltage > Cable > Data Acq > Cable > Laptop running software I already have.

    I don't know if this can be done easily or not.
    Thanks,
    Steve

Similar Threads

  1. Replies: 319
    Last Post: 07-06-2011, 03:18 AM
  2. Replies: 1
    Last Post: 06-22-2007, 12:44 PM
  3. Replies: 22
    Last Post: 04-15-2007, 09:38 PM
  4. Replies: 2
    Last Post: 08-31-2005, 06:01 PM
  5. PC / Vehicle interface
    By bluelip in forum General Hardware Discussion
    Replies: 7
    Last Post: 07-15-2005, 01:24 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •