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Old 07-07-2008, 02:18 PM   #421 (permalink)
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@ Brandon

I can't believe I didn't think of just using a continuity tester... durr.

Thank you for this, and hopefully others will find it useful as well.

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Old 07-07-2008, 05:26 PM   #422 (permalink)
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Quote:
Originally Posted by wagonman76 View Post
Hi, I am really thinking about starting on this project for my OBDI vehicles. Do I need to snap up one of the v1.0 serial boards before they are gone, or will everything work just the same with a v2.0 serial board? Im running NT4 sp6 so I do not have USB.
I don't see why the v2.0 board wouldn't work. The only difference is the serial programming interface - the functionality should be identical:

Quote:
Originally Posted by NKC Electronics
This KIT uses a MAX232 compatible RS232 driver, instead of the 2 transistors used in the original Arduino serial board, improving the reliability of the RS232 communication to higher levels comparable to the USB board.
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Old 07-10-2008, 11:08 PM   #423 (permalink)
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So I've got everything built, and since v0.66 and having it hardwired, everything seems to be looking good on the bench. It seems that all thats left is to get at my ECU and test this bad boy out in the car.

Something really strange I noticed however:

As of v0.67, it seems that I am now my own signal generator. If I touch the VSS input, I will get on the instant raw data screen up to 60.00-61.00 (not sure what that means but it equates to about 52mph on the first screen). And if I touch the injector input, I get a uS of ~362000. I'm not sure if this is just because I don't have them hooked to a solid signal and they're taking the minute electrical signals in my finger and running with them, or if this is going to be a noise problem. Any ideas on this? It is cool to see it working though
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Old 07-11-2008, 08:00 AM   #424 (permalink)
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I suppose thats possible, picking up interference, depending on how sensitive the mpguino is. What I would try is shielded wire, or at least wrapping the wires with foil and see if it helps.
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Old 07-11-2008, 08:16 AM   #425 (permalink)
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Naw, it does that when not hooked up. It's not a problem when it is hooked up, so it's not a problem.
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Old 07-11-2008, 09:09 AM   #426 (permalink)
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^^ Cool that's exactly what I wanted to hear Now I don't have to build a signal generator, and can see that it is working. Now to find those schematics again that I found for my car....
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Old 07-11-2008, 09:38 AM   #427 (permalink)
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Quote:
the list of beta testers/second fiddlers now includes:
larrydag - '95 Honda Accord DX
myself - '98 Pontiac Firefly (Geo Metro)
andrewj - '94 Civic CX
mosier - ??
awillard69 - ??
Mr Clean - ??
And of course our fearless leader:
dcb - 97 saturn s2
Did I miss anyone?
I'm using a '85.5 Mitsubishi Starion...
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Old 07-11-2008, 10:15 AM   #428 (permalink)
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I'll be putting mine in the Jeep, '01 Wrangler. Been busy lately (family, work, more family), but hope to get it installed this weekend. I'm putting it into an enclosure, just working on the buttons now, then it's just wiring. I'll post pictures when I get it done. Plus, since it's OBDII, I'll also be shadowing it with the SGII.
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Old 07-11-2008, 12:06 PM   #429 (permalink)
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Don't forget my '93 Corolla.. I've been busy too, but I'm almost there
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Old 07-11-2008, 12:50 PM   #430 (permalink)
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And my '05 Subaru Impreza Outback Sport. Here's the info for the database:

Injectors: 4x 155cc/min = 366330173 uS/gal/injector... /2 = ~183165000 - for some reason dividing by two is giving me more accurate mpg readings. Gotta calibrate still over a few tanks, but this is far less optimistic, but more realistic I think.

VSS: Seems that 8000 even matches my ODO exactly... I may calibrate this to the GPS though for more accuracy since I know my ODO is off a hair.

Injector/VSS/ECU pins/locations for '05 Subaru Impreza:

http://i18.photobucket.com/albums/b1...iagram-VSS.jpg
http://i18.photobucket.com/albums/b1...-Injectors.jpg
http://i18.photobucket.com/albums/b1...nectorPins.jpg
http://i18.photobucket.com/albums/b1...rLocations.jpg


Last edited by cmags; 07-21-2008 at 10:03 AM.. Reason: Updated figures
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