ELM327 Bluetooth OBD-II Wireless Dongle $57 (including shipping and Taxe) for Carman
 

ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57
http://www.dealextreme.com/details.dx/sku.16921

Sold for at least $72 in Ebay.


Edit: Tested by "nix". These are his pictures and a small testing video:

http://www.youtube.com/watch?v=pWzWgJWnfu0

pictures:

http://picasaweb.google.com/xmpp.tes...an_N800_OBDII#

http://www.dealextreme.com/productim...ku_16921_1.jpghttp://www.dealextreme.com/productim...ku_16921_4.jpg

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Thanks, great price. Does anyone know if this particular unit works with Carman? I was just getting ready to spend $170 for ODBkey, but I'd much rather spend $57.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Actually i didn't buy it but i'm quite sure that all OBD-II dongles with ELM327 chip will work with carman, someone from Carman developer could help you with this issue.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I just bought it. I'll update this thread after I test it.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Many thanks for the upcoming reviews.

There are also USB versions out there. This might be preferred for some for additional privacy. NOTE: USB does not appear to be supported by Carman!

According to my search my car supports OBD-II but how do I know where I connect it? How do I know this ELM327 tool supports it?

Found one on eBay UK for £29.99. It uses BlueTooth 1.2. This is even more insecure than 2.0 hence all the data can be read out by others! What BlueTooth version does the DealExtreme one support?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

yes, Carman supports only Bluetooth until now, perhaps usb in future.
Your car support OBD, you must read your car manual and look for OBD, you will find exactly where it is located. You can find same info in many website, just use Google type your car model and OBD.

If your car is OBD II so, this Dongle support it. Any OBD II reader is compatible withh all cars using OBD II.

I don't understand your problem with secure connection. You are only reading data, you can't write it. So, what's the problem if others can read it?

they are in general more interested by the Bluetooth in your PDA than the one in your car :).

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Privacy???? OMG- you are worried someone might find out how many milliseonds your fuel injectors stay open? or how many volts your cars O2 sensor has across it?

BTW- Bluetooth is secret key-based encrypted by default anyway, so your O2 sensor voltage is probably safe from all but the most determined spies.
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Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Yes, my car supports OBD-II, I just have to find the connector.

The BlueTooth in my NIT, phone and laptop is hidden.

Some people are using BlueTooth for tracking and building databases with such information. I don't like that.

First of all some devices have standard keys. I have no idea how to change them. Second, this cryptography implementation is most likely broken.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

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There isn't much motivation for a hacker to exert effort to crack my Bluetooth. What is he going to see, how fast my engine RPM is at idle?


When I have sensor data in my car that I worry about someone stealing ----AND---- that person is within range (10 to 30 meters) then I will worry about it. Fact is you said something foolish regarding Bluetooth security concerns and the ELM327, just admit it.
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Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

a Hacker could reset that check engine light in your VW without your consent....


anyway until carman support USB, I will keep using the Scangauge

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

From what I read Carman does not support more BlueTooth devices than the ElmScan although these could be added relatively easily.

Your BlueTooth...

My point is about BlueTooth 2.0 cryptography (using linear feedback shift register), and BlueTooth tracking in general (lack of hidden mode / temporary visible).

10 - 30 meters is for BlueTooth 1.2. This encryption scheme is easily crackable. For BlueTooth 2.0 its 100 meters, and crackable in theory.

-1 straw man.

Just because you don't care about a problem doesn't mean it doesn't exist.

I believe the choice between BlueTooth 1.2 and 2.0 is in this case a conscious, important choice.

Now stop stalking me. Creep.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I don't think the range is specific to a Bluetooth version. The class of the device specifies the range : (if memory serves) Class I is 100 m and Class II is 10 m.

Fred

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

You are not being stalked. I have an interest in Carman Bluetooth. You said a a couple dumb things in this thread (and then tried to justify them as not dumb).

Stop being paranoid, you are not being stalked. Stop calling me names.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Remember that a high gain antenna may permit connection or tracking from a distance much farther than specified by the bluetooth spec.

I'm not so much worried about the privacy of bluetooth as I am upset over the high cost of bluetooth to serial adapters. Most bluetooth obd interfaces cost $150 or more. This is at least $50 more than most usb and serial interfaces from the same vendors.

I'd really like carman to support usb so I could build one of these for only $50: http://obddiag.net/products.html

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

OBDPros has one and its field upgradeable. I'll have mine shortly so I should be able to give details.

http://www.obdpros.com/product_info.php?products_id=135

Carman should be easily adaptable to use USB (if the serial port driver is sane)

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

being hidden doesn't stop a determined attacker, it's possible to do a brute force scan of bluetooth devices WITHOUT needing to scan every possible mac. go google for Adam Laurie's bluetooth hacking tools.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Received the one from UK for ~30 GBP. Works great! Had to search for the OBD-II interface (was not in my manual), but it was actually on a straightforward spot. Just hidden. If the car is off, I can actually connect, but then it disconnects right away. Now I'll combine this with my GPS.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

What vendor did you order it from?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I guess this one:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=320313061278

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Yes.

I think Carman just reads the data from an input device. So if you select a different /dev it should work (if protocol is also same).

Here are 2 other open source utilities for OBD-II

http://freediag.sourceforge.net
http://www.cs.unm.edu/~donour/cars/pyobd/

I'm trying to find Carman option to have the raw/extended data but it seems this is gone from 0.7.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Any info you can feed us Matt? There are a few of us aching to dive into the DX unit once we know it works to some extent with Carman. I actually emailed the ELM327 folks and their statement led me to believe that it isn't an original chip of theirs. That isn't to say it won't work properly or fail to communicate with Carman but as they said, who'd spend the time removing the OEM sticker on the chip?

Please let us know what you've been able to do/not do and if by chance the manufacturer's sticker happens to be on the ELM chip (I doubt it).

Thanks much,

Dave

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Of course I will. I post pictures of it too if that'd be helpful.

I've only just this week been notified that the supplier has shipped the part. It's by mail, and it's coming from China. So it'll be another week or two before I actually receive it.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

so can anyone confirm wherever this DX BT thingy works with CarMan?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

At this time I'm guessing nobody else who found this thread took a risk and ordered it other than Matt so until his arrives we'll probably be sitting in the dark awhile longer since had they ordered they too are probably waiting just as long for theirs. Good to know for would-be purchasers to keep our expectations reasonable on the shipping front.

Some day our children's children's children will have the ability to purchase an item and have it arrive instantly via teleport mechanism. Until then...we drink, er wait.

Dave

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Has anyone determined if this scanner samples data at 1hz or 5 hz? The more expensive ElmScan 5 samples and transmits at 5hz which is far more useful than just 1hz for diagnostics or performance data.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I think I have the very same device as the one sold here (see the other thread). At least they look similar. But I don't know how or where I look up the information you're asking for.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Geez guys, just buy from DealExtreme, you can pick up some placenta essence while you're there

http://www.dealextreme.com/details.dx/sku.11020

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Very interested, can't wait to see if this works.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

You are obviously referring to the placenta essence, keep us updated!

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

The delivery person came by with it today; but my wife wasn't home to sign for it.

Hopefully, he'll be by with it again tomorrow, and I'll have it to play with over the weekend.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Well, I finally got mine last night, and it's taking a bit of figuring.

The tablet (and Carman) recognize it as an OBD2 interface, and carman will connect to it for a few seconds before telling me "ODB2 disconnected"..

I've had very little time to poke at it, but it plugs in, transmits bluetooth, and carman (.7) at least sees it, but at this point, I've yet to get it doing what it's supposed to.

On an amusing note, it comes with the software from the car-pal (and the car-pal documentation) for windows, pocket pc, palm, etc..

*Update:
Well, I'm not much farther ahead - It still sees the unit (BTW, the pair code is "0000", if you get one), but disconnects after a few seconds. In the carman garage, it seems that the actual car-pal guys are having the same issue, so I posted my (looks useless to me) debug log to add to it. I'm hoping Matt has better luck than I, and that I've just got some out of date library file or the like. I can confirm that the DX unit is a bluetooth ODBII unit, but as far as working with carman 0.7.. Not yet for me..

Hey Matt; let me know how it goes for you...

To put it in debug mode, it's: carmand --log-level=debug > /my/card/my_log.txt (I used > /log.txt, but then you have to ssh into it to grab the file, instead of just plugging in the USB)
That starts the tray app in debug mode, and you've got to launch from there, but I didn't see any smoking guns around..

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I was able to try mine out today, and it works.

Here's what I did.

• plugged the box into the odbII socket.
• started my vehicle (Toyota - FJ Cruiser)
• started carman
• quit carman
• went to settings in the apptray
• paired the new device, and chose it for the odbII device selection.
• launched carman from the apptray
• went to the dials screen, and it was registering my RPM. I drove around the block and watched the dials move.
• when I turned the vehicle off, it told me odbII disconnected.

I really hope that helps you diagnose your issue. It'd be nice if it worked well for everyone.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

What's the refresh rate, and has it been stable for you? Also, have either of you tried any pc software?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Stuffguy, what vehicle are use testing with?
In this thread:
http://www.mp3car.com/vbulletin/engi...aptop-usb.html
an employee of scantool.net suggests that many elm327 clones may support only CAN and ISO protocols. (post 12, or look for the picture of the circuit board)

DX claims this interface supports "SAE J1850", but does not mention PWM or VPW. My car uses PWM so I am very wary of buying this interface.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Well, I'll give it another stab. Last night's snowstorm didn't make sitting the the parking lot that much fun. Thanks for the help. I'll try your procedure and see.. Thanks, eh?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

I've been testing it on a 96 saturn (mainly because it's been stupidly snowy, and I can smoke in that one), but that's an interesting point. I'll go try it on the jeep, but as far as I know (in my limited knowledge), north american cars (and construction equipment, etc) use the canbus for all the intra computer communications. I don't remember if the SAE spec above is the right one or not. I'm thinking I have a different numbered one in my head, but it's been months since I had need to look at the canbus spec.

I'm afraid I'm not at all familiar with PWM or VPW.. Got linkage or a quick explanation of what those are and where used?

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

http://www.scantool.net/support/inde...icleid=3&nav=0
There's a link near the bottom of that page that may tell you without crawling under the dash.

I would expect a 96 Saturn to use VPW.

The table is confusing but I think
J1850-41.6 = PWM = "used mostly in Ford Corporation vehicles"
J1850-10.4 = VPW = "used mostly in General Motors vehicles"
based on scantool.net's descriptions of their single protocol products.

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Ahh.. That makes more sense.. I've really only had anything to do with canbus protocols recently, so I wasn't aware that it was a relatively recent development...

Update: "I'll give it a try in the 04 Liberty, and let you know if I have the same problems..".. Doh! Nix that.. It seems to use the same protocol as the saturn (or is likely to).. I'm thinking that using the car-pal software that they included with it will be the easiest way to verify the unit, aside from my Carman difficulties.. I just need to find where I put the cd drive for the laptop..

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Well, good news for you, so-so news for me. Using the car-pal software, it will connect to a 96 saturn, monitor, check codes, etc, so the VPW issue isn't an issue. I don't have a ford handy, so I can't help you there.

That doesn't help me with my carman issues, but that at least answers that question. :)

Re: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle $57 (including shipping and T
 

Refresh Rate - Not near as fast as a Tech2 - If I were to guess, I'd say it polls all the sensors about once per second (or at least the car-pal software does, anyhow - raw sampling frequency? Dunno.)..

It didn't flake while I was playing with it, but I didn't have it on for hours - maybe 10minutes while watching the car warm up, and the spark advance change..

And to your second - Sadly, the included car-pal software is the only way I've been able to use it, so far. Now that I know it does do what it's supposed to (though, does take some time to properly connect), I'm back to working on why carman keeps disconnecting on me..