Scanner Hardware...please read...
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Scanner Hardware...please read...
Can anyone link to or e-mail me the electrical schematic for the ALDL/serial interface they used.
I have found about 6 or 7 diagrams, all different. I have no idea which one will work and which one won't. I know what they are *supposed* to do and which baud rates they are at, but I just want to be sure I don't nuke my ECM (or my brothers laptop) when I hook it up.
Most involve the use of the MAX232A chip which is coming in the mail. But some of the diagrams get power from the ALDL and some from the DB9 serial port (?). I didn't think that the circuit could get enuf power from the DB9 to run.
TIA
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'92 Astro 350 TBI Edelbrock intake, MSD 6AL, 3.42's, 2.5" exhaust, Flowmaster 40 2 chamber, B&M 2nd stage shift kit, 255 60 R15 tires on AR-727's, Polished & Bored TBI, Custom EPROM in progress
I have found about 6 or 7 diagrams, all different. I have no idea which one will work and which one won't. I know what they are *supposed* to do and which baud rates they are at, but I just want to be sure I don't nuke my ECM (or my brothers laptop) when I hook it up.
Most involve the use of the MAX232A chip which is coming in the mail. But some of the diagrams get power from the ALDL and some from the DB9 serial port (?). I didn't think that the circuit could get enuf power from the DB9 to run.
TIA
------------------
'92 Astro 350 TBI Edelbrock intake, MSD 6AL, 3.42's, 2.5" exhaust, Flowmaster 40 2 chamber, B&M 2nd stage shift kit, 255 60 R15 tires on AR-727's, Polished & Bored TBI, Custom EPROM in progress
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From: In reality
Car: An Ol Buick
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<font face="Verdana, Arial" size="2">Originally posted by V8Astro Captain:
Can anyone link to or e-mail me the electrical schematic for the ALDL/serial interface they used.
I have found about 6 or 7 diagrams, all different. I have no idea which one will work and which one won't. I know what they are *supposed* to do and which baud rates they are at, but I just want to be sure I don't nuke my ECM (or my brothers laptop) when I hook it up.
Most involve the use of the MAX232A chip which is coming in the mail. But some of the diagrams get power from the ALDL and some from the DB9 serial port (?). I didn't think that the circuit could get enuf power from the DB9 to run.
TIA
</font>
Can anyone link to or e-mail me the electrical schematic for the ALDL/serial interface they used.
I have found about 6 or 7 diagrams, all different. I have no idea which one will work and which one won't. I know what they are *supposed* to do and which baud rates they are at, but I just want to be sure I don't nuke my ECM (or my brothers laptop) when I hook it up.
Most involve the use of the MAX232A chip which is coming in the mail. But some of the diagrams get power from the ALDL and some from the DB9 serial port (?). I didn't think that the circuit could get enuf power from the DB9 to run.
TIA
</font>
You could buy a gal or two of gas?.
(In like reply, to your WB O2 posting)
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From: 600 yds out
Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
<font face="Verdana, Arial" size="2">Originally posted by Grumpy:
Why spend the money on a cable?.
You could buy a gal or two of gas?.
(In like reply, to your WB O2 posting)
</font>
Why spend the money on a cable?.
You could buy a gal or two of gas?.
(In like reply, to your WB O2 posting)
</font>
In regards to the O2 sensor thing, it was an attempt at humor I guess you didn't grab, or didn't agree with SORRY!
I'm sure some of you know a millions times more about this than me, it just sux that when I need help nobody responds, which is ok if I ask a rediculous question.
What I asked for was far from rediculous because I know some of have made an interface cable and the plan probably didn't fall from the sky.
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From: Baton Rouge, LA, USA
Car: 87 T/A
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Don't be a dork. There are a variety of schematics and most work. Pick one which matches your skill level and build it. Then try another one for fun. Then design your own...
Try one which uses +12v supply from the cigarette lighter, then you won't drain your com port and you won't have any voltage to/from the ECM... Max 232 or 233 have both worked for many...
[This message has been edited by Craig Moates (edited September 26, 2001).]
Try one which uses +12v supply from the cigarette lighter, then you won't drain your com port and you won't have any voltage to/from the ECM... Max 232 or 233 have both worked for many...
[This message has been edited by Craig Moates (edited September 26, 2001).]
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From: Uppsala, Sweden
Car: Camaro IROC-Z '89
Engine: 350 TPI /w Procharger P1SC
Transmission: TH700R4 with Transgo shiftkit
Axle/Gears: 2.77 Borg Warner
<font face="Verdana, Arial" size="2">Originally posted by Craig Moates:
Don't be a dork. There are a variety of schematics and most work. Pick one which matches your skill level and build it. Then try another one for fun. Then design your own...
Try one which uses +12v supply from the cigarette lighter, then you won't drain your com port and you won't have any voltage to/from the ECM... Max 232 or 233 have both worked for many...
[This message has been edited by Craig Moates (edited September 26, 2001).]</font>
Don't be a dork. There are a variety of schematics and most work. Pick one which matches your skill level and build it. Then try another one for fun. Then design your own...
Try one which uses +12v supply from the cigarette lighter, then you won't drain your com port and you won't have any voltage to/from the ECM... Max 232 or 233 have both worked for many...
[This message has been edited by Craig Moates (edited September 26, 2001).]</font>
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ZaphodB a.k.a Carl Andersson - zaphodb@faxancruisers.org
'89 Camaro IROC-Z 5.7L TPI - Mods under construction :-)
Custom ARAP Chip Under Development/180 t-stat, Edelbrock TES Headers,
SLP Airfoil, K&N Filters, Accel 8mm wires, Relocated MAT, AFPR @ 45 PSI
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From: Woodlands, Texas, USA
I bought a completed cable from here http://www.mindspring.com/~amattei/aldl.htm
Andrew does a great job and sent it to me very quickly.
He has free schematics on his site. He has kits and assembled cables you can buy.
Andrew does a great job and sent it to me very quickly.
He has free schematics on his site. He has kits and assembled cables you can buy.
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