Arduino ALDL Info Display

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pman92
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Arduino ALDL Info Display

Post by pman92 »

I plan to sometime in the future (not this week or next) use an Arduino to create a digital speedometer display to replace the non functioning clock in my tonner.
I originally planned to use gps for the speed information, but have since decided I should use ALDL data to get the information since I could then potentially display other information if I wanted to (coolant temp etc etc).
I've done a lot of reading online and seem to understand most of it except for one thing.

I'm using a 808 with 12p and USB Comms.
Is there even a single wire 8192 ALDL connection for me to connect to?
Does the old 160 ALDL pin for the diagnostic connector become 8192 now I'm running the 12P code?

I plan on using the transistor circuit described in section 3.2 here:
http://lukeskaff.com/?page_id=305
To connect the arduino Tx/Rx connections to the ALDL line.

Or would I have to connect the arduino up to the USB and get the data out via the USB Comms board?

This project is along way off and I'm only really dreaming it up at the moment.
No doubt I'll do some simple projects first to get a grasp.
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Jayme
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Re: Arduino ALDL Info Display

Post by Jayme »

there are a few ways of doing what you want, but the easiest for you may be to use VL400's SXR board design, to replace your current USB comms board. the SXR board essentially turns the 808 into a VR manual ECM, so you can wire that interface at the web page you linked, up to the 8192 baud data pin on the 808 - pin A8 (which is now active as a result of the SXR board)

I have a few of these in stock. pictured here:
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festy
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Re: Arduino ALDL Info Display

Post by festy »

Or just wire the Arduino's uart directly to the MCU's?
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Re: Arduino ALDL Info Display

Post by antus »

thats ok if you dont want to be able to log data at the same time. Some kinda switching setup would work. Nicest way would be use the above and install an ALDL bus in the car. Then make the arduino project listen for and obey chatter disable commands.
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
pman92
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Re: Arduino ALDL Info Display

Post by pman92 »

Thanks guys, exactly what I needed to know.
How much are them boards Jayme?
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Re: Arduino ALDL Info Display

Post by vlad01 »

I got one of these in my 808 in the VP and wired in a VR onward style OBD socket. Its just a single wire plus a ground.

So this makes all my cars use the same interface and more universal. I can install a bus into the car later if I ever desire it.
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Re: Arduino ALDL Info Display

Post by antus »

I'd say you have a bus, just with not so many devices on it.... yet. Vt dash becomes an option with 12p
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
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Re: Arduino ALDL Info Display

Post by Jayme »

pman92 wrote:Thanks guys, exactly what I needed to know.
How much are them boards Jayme?
I haven't created a for sale ad for them yet, but cost is $70 + $15 P&H
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