OBD-2 Input to the PIC

[oslinux]

True they are just pics with code. You're welcome to spend the hundreds of dollars to buy the SAE standards, and then hours and hours creating code. I can say from personal expirence its a major task. I found that spending $14 on a device the handles all the communications was money well spent. Plus by changing Elm chips I can "talk" to different cars without rewriting my code.

Ehhmmmmm... i guess you're right!

Depends what you mean. The product was designed to be an ODBII diagnostics tool. With the chip you will get all the normal engine data and diagnostic codes. The following site has some more information about the chip plus some free software and schematics. http://scantool.net/

Ok.

Not sure what you mean. If you're asking if you can tie your computer directly to the OBD buss the answer is no. There are currently 4 OBDII communications protocols all with very different communications methods but none are RS232 or TTL.

No, i meant "I can connect the serial output from the elm chip to a PC and then use a standard software for obd over serial to read the data?"

thank you for your help!

Luca

[DynamoBen]

No, i meant "I can connect the serial output from the elm chip to a PC and then use a standard software for obd over serial to read the data?"

Yes, the chip is designed to be used with something as simple as hyperterminal. No special software required.

[skimask]

Yes, the chip is designed to be used with something as simple as hyperterminal. No special software required.

I'm using an ELM327, got a few PCBs I designed on the way. Chip works like a champ and the 'shareware' that's out there works great too. Lots of software to choose from, just have to pick whichever one fits your wants/needs.

[Ioannis]

Can one use the OBD-II to, say, lock or unclock the doors, or open - close the windows or control other electric devices?

Ioannis

[Archangel]

Can one use the OBD-II to, say, lock or unclock the doors, or open - close the windows or control other electric devices?

Ioannis

The only tester I've seen which will do all that is the Star tester ford uses, only $3500 or so, My MT2500 won't do all that, at least with the older software I have, maybe the newest updated . . . I doubt it though.

[Ioannis]

Once I saw a car alarm that would do all the above. It may used the can-bus of the car for that purpose. Sure it used a 18F series controller.

Ioannis

[skimask]

Once I saw a car alarm that would do all the above. It may used the can-bus of the car for that purpose. Sure it used a 18F series controller.

Ioannis

I wouldn't doubt you can use the CAN bus in a vehicle to control all of that and more. Problem is getting your hands on the codes/protocol to handle that. I'd bet that stuff would cost a load of $$$...unless it's on the net somewhere. I haven't found anything like that beyond generic troubleshooting type stuff so far...been searching off and on for a couple of years now...

[DynamoBen]

Can one use the OBD-II to, say, lock or unclock the doors, or open - close the windows or control other electric devices?

Ioannis

I recently helped another forum member create such a project, use the search above.

This kind of info's are well kept secrets and are different for each type of car. I will try to find that guy that had the alarm systems. Are interested in a specific car to look?

It’s not really, if you have a copy of the standard its in there. If you're creative you could hook up the Elm device to the car and start capturing codes.

BTW if you email Elm they will tell you that they don't support this type of interaction. That being said I've seen it done and it works, you really have to educate yourself on how the standard works and the different settings in the Elm chip.

[Ioannis]

OK. Thanks. I'll check it. I thought that only CAN-Bus was meant to do such "dangerous" and "wild" things on the car, not the more "innocent" ODB known to be a diagnostic tool.

Thanks again,
Ioannis

[Acetronics2]

Hi, Ioannis ...

My car is a " quite fully " computerized one ...

and , If I want to buy a new key, I MUST go to the dedicated garage ...

You know why ???

All the new key logging is made being connected to the OBD plug ... YESSS !!!

I suppose you understand what this mean ... and some functions do not have to be explained on the Web ... or at your own risks ( There's a superb .444 cal. 94' model Winchester repeating gun home ... for your info !!! )

The answer to your doors, glasses ...etc, control is YES ( but may be not with all car models ...)

Regards

Alain