1. Yiannis's Avatar
    Can someone write an application that downloads and displays car codes and data from the car's computer's using the obdii connection?

    Currently we have to pay $170 for the more decent Scangauge II
    11-22-2009 09:57 AM
  2. Adiliyo's Avatar
    how would you input the car's data? don't you need a hardware device to do that?

    or are you talking more like a database that keeps the details about the codes?
    11-22-2009 10:47 AM
  3. Yiannis's Avatar
    I assume that the "hardware device" you speak of simply reads data from the computer, decodes and displays them.

    Why wouldn't any appropriately configured device read that?
    11-22-2009 12:54 PM
  4. Adiliyo's Avatar
    i'm not sure, don't you plug something into the car to get the odbii codes out of it?

    i haven't worked on a modern car in a while...
    11-22-2009 01:09 PM
  5. Yiannis's Avatar
    there are cheap obdii readers that you can view and store in your laptop, but the ones displaying real time info are $170 or more.
    11-22-2009 02:37 PM
  6. kennyidaho's Avatar
    Yes but don't you need a physical connection between the car and device ie cable? Does a cable exist that would plug into a car and also fit the hero's miniUSB port?
    11-22-2009 05:14 PM
  7. Jerry Hildenbrand's Avatar
    The interface isn't a problem. It's a 4 pin low speed data xfer, and usb adapters are already available. The issue would be getting the specs on the data that's sent by various cars.

    Example - I could test on a Lexus and probably grab the data and figure it out. That won't help for a Ford. I'm sure there's a resource out there that tell the various data sent by each manufacturer, or else there wouldn't be 45 dollar laptop solutions.

    The auto industry is one I'm pretty damn familiar with. I already provide some services to Mile One Corp and Group 1 Automotive (shameless plug )for data hosting, as well as call center operations. I know someone who may be interested in this, I just finished working with him on an iPhone solution for auto starting and unlocking automobiles. I'm meeting with him Tuesday, and I'll see what he has to say.

    In the meantime, I suggest you write a little proposal for your idea and email it to yourself. This shows the date and time in case there are any "issues" when/if a solution like this comes to market. This wouldn't be a .99 app, so there may be potential for some serious profit, and you deserve your share for thinking of it.
    11-22-2009 08:02 PM
  8. Jerry Hildenbrand's Avatar
    To update on this. The project sounds very interesting, and we hashed around a bunch of ideas how one would go about getting it started. Then a stumbling block hit.

    This would likely be as battery intensive as a voice call. Since the mini USB would be in use to collect the data, is the app still useful if
    A - it can only be used for a limited time while you're driving
    B - Will a consumer accept the fact that using this may very well eat the battery enough that the radio will no longer function.

    In my/our/his opinion, this is a very interesting idea for an application, and once the power supply factor was worked out would likely appeal to men 18-25 (who also happen to be the Android target audience). Solutions could be manufactured that allow direct connection to the phones power supply, such as a new battery cover with a charging port attached directly connected to the battery contacts, but it's likely beyond the scope of a small development team.

    He suggested you present your idea to Pertronix or another high preformance auto electronics maker. Stress the point of the Droid's industrial look and feel, and point out the appeal the device would have to tuners and other folks who like to tinker, as they are likely to have cutting edge electronic devices anyway. Use the Droid as your selling point, and not the Hero or Eris

    You've got a good idea in your hands. I wouldn't give up on it. If you ever get to the manufacturing and testing phase, I'd love to try it on my LX, I don't believe that 18 mpg rating

    Hope this helps.
    11-25-2009 09:43 PM
  9. Ali Fazel's Avatar
    Instead of a USB adapter, could a battery-powered bluetooth adapter be used? Then, have the obdii communicate to the phone app via bluetooth so that the phone can still receive the data without so much power being used, and the phone can sit on a charger within the car.
    12-12-2009 01:37 PM
  10. robertw0925's Avatar
    I would pay for this
    12-21-2009 11:04 PM
  11. ubasu's Avatar
    PLX devices makes this for the iphone ipod touch

    Also innovate motor sports is making one too for the ipod iphone.

    All that would need to be done would be to write the software for one of these devices.

    Id be more than happy to help with the project

    I tried to get this going before but at the time the hardware wasn't as cheap and/or available...
    12-23-2009 02:00 PM
  12. Skaggz's Avatar
    Power wouldn't be too much of an issue. On the OBD-II connector, pin 16 is 12v power and pins 4 & 5 are both ground.

    Generic OBD-II would be accessible since it only uses 1 serial data line (I believe). You would be able to access P0xxx codes and their definitions since they are the same on all cars made since 1996. example P0302: Misfire on cylinder #2. Also, live data is available through generic OBD-II, but not as functional as manufacture specific data.

    Manufacture specific codes, P1xxx format, would pose a problem since it uses multiple serial data lines. The device would have to be formatted to know which pins to pull information from for that specific make and model.

    P1xxx codes would be readable in generic OBD-II, however their definition is not the same for every year, make, and model. You would need a rather LARGE database to be able to pull those definitions.

    The Bluetooth device is a good idea, but I'd expect it to be rather pricey. Honestly, if you want this functionality, you'd probably be better off with an inexpensive code reader from your auto parts store.


    No, I'm not an app developer, I'm a mechanic.
    01-04-2010 09:27 PM
  13. MikeB's Avatar
    I'd love to see gauges on the face of the droid with configurable ODB-II parameters like my Batt volts, coolant temps, oil pressure, etc .. I know there are gauges by PLX that do this now .. but an app for Android would be awesome! You could use the car mount and have a couple of configurable gauges!

    I have an SCT XCal-2 that has an ODB-II port to USB connector so I can hook my laptop up to the car and data log all of the ODB parameters (thru the device) and show them graphically. This thing was more like $400 though .. and it stores/loads custom ECU tunes for the car as well.
    01-05-2010 03:11 PM
  14. rrife's Avatar
    Buy a bluetooth ODBII adapter from ebay (~$40), download a terminal application that supports serial connections pair your phone to the ODBII adapter, launch the terminal app & connect to the BT serial port....done.
    01-06-2010 09:52 AM
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