CAN Bus Connector Cable - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 11 (permalink) Old 08-08-2004, 02:55 AM Thread Starter
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Hi,

I am trying to make myself a CAN-to-RS232 connector cable. Does anyone know any connector pinouts ? Any links, ideas ?


TIA
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post #2 of 11 (permalink) Old 08-09-2004, 10:53 AM
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I looked into it and gave up. I couldn't find that info on the internet. Its almost worth it to just buy something like the Autoengnuity scanner. That way you have the scanner software. Are you planning on doing more than just the scanning capabilities? If so, this way you'd have the hardware, the scanner software, then can use that hardware for your purposes.
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post #3 of 11 (permalink) Old 08-09-2004, 06:10 PM
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Quote:
Originally posted by GreenNuggs@Aug 9 2004, 08:53 AM
I looked into it and gave up. I couldn't find that info on the internet.* Its almost worth it to just buy something like the Autoengnuity scanner. That way you have the scanner software.* Are you planning on doing more than just the scanning capabilities?* If so, this way you'd have the hardware, the scanner software, then can use that hardware for your purposes.
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Can to RS232
$130 is crazy for that (if that in fact is the thing you are talking about)...

"Zoom freaking Zoom"
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post #4 of 11 (permalink) Old 08-10-2004, 12:25 AM Thread Starter
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Thank you both.
I was curoius to test a few software apps before buying them so I thought I might be able to make the cabe myself.

Do you know anyother CAN scan software on the market other than AutoEngnuity?

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post #5 of 11 (permalink) Old 08-10-2004, 12:26 AM Thread Starter
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Thank you both.
I was curoius to test a few software apps before buying them so I thought I might be able to make the cabe myself.

Do you know anyother CAN scan software on the market other than AutoEngnuity?

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post #6 of 11 (permalink) Old 08-10-2004, 03:11 AM Thread Starter
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He who seeks, shall find!

Ok this is the best link I could find on the net:

http://www.obd2cables.com/products/o...ble_type_b.htm

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post #7 of 11 (permalink) Old 08-10-2004, 10:00 AM
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I'm almost positive the box itself must be CAN capable. That is, I don't think you can simply hook this cable from the serial port on your computer directly to the OBDII port without some sort of hardware switching.

"Warning: the OBD-II cable is designed to be used in conjunction with ElmScan family of interfaces (or other interfaces, which isolate your computer from the vehicle's electrical system). Plugging the cable directly into the PC may damage the serial port."

Their packages don't mention CAN capability, even if the pinouts do:
http://www.obd2cables.com/products/s...l_packages.htm

PWM is not the same as CAN.
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post #8 of 11 (permalink) Old 08-10-2004, 10:02 AM
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I know its expensive, but the AUTOENGUNITY software is worth the price. You can get it on Ebay for under 200.
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post #9 of 11 (permalink) Old 08-11-2004, 08:09 AM Thread Starter
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Surely you cannot directly connect the serial port to OBD-II connector. Take a look at this circuit for OpenDiag project http://www.planetfall.com/%7Ejeff/obdii/.

Nevertheless, I think that's too risky and not worth the hassle.I think I'll go for an ebay version of my project rather than the DIY one.

By the way, have you guys ever tried this AutoEnginuity app?
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post #10 of 11 (permalink) Old 08-11-2004, 10:03 AM
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Quote:
Originally posted by Saeed@Aug 11 2004, 08:09 AM
Surely you cannot directly connect the serial port to OBD-II connector. Take a look at this circuit for OpenDiag project* http://www.planetfall.com/%7Ejeff/obdii/.

Nevertheless, I think that's too risky and not worth the hassle.I think I'll go for an ebay version of my project rather than the DIY one.

By the way, have you guys ever tried this AutoEnginuity app?
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So you were thinking about making the circuit yourself. Thats pretty cool, but yes risky I suppose.

I have the AutoEnginuity app. Its top notch scanner software and comes with another package that works similar to the G-tech to estimate HP, 1/4 times, 0-60 times, etc. I've never been able to use that package though because my laptop battery is dead so I have to plug it in to the wall. (There are other software/hardware packages out there, visit 6tech for more info, that are cheaper, but the software is definitely not as good as AutoEnginuity is.) But the scanner software is great, allows realtime sensor monitoring of just about anything you'd ever want, freeze frame data, and DTC codes.

The scanner in my opinion is one of the best and cost effective ways to keep tabs on the operation of your vehicle. I'm so glad I got it.
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