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Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

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Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Old 06-26-2018, 08:21 AM
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Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

I wanted to give a quick status about a project I recently forked from a dormant GitHub repository for monitoring 8192 baud ALDL streams from OBD-I GM ECMs.

Being an experienced engineer/scientist and an amateur mechanic, I decided that I needed more data from the 3.1L V6 LH0 in my 1992 Camaro RS if I were to properly diagnose and learn along the way. Also, I was looking for something that had the 80s command line UNIX/DOS aesthetic to match the era of the car.

Photos/video are below the code is compiled on a Raspberry Pi in an integrated 7 screen display case connected to the ECM through an ALDL USB cable from Red Devil. The address definitions were modified from an original LT1 configuration to a LH0 definition ($88 from a TunerPro RT file I found). The console is fully-customizable to display whatever addresses are coded up the ones shown are some low-hanging fruit as I play around with the arrangement of the displays.

If if people are interested in the step-by-step guide on how this was coded up/compiled and how the Pi was configured, Id be willing to write a How To let me know! ~PG




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Old 06-26-2018, 09:58 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Nice work!
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Old 06-26-2018, 10:00 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Totally amazed by the ingenuity of this forum. Awesome job!
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Old 06-27-2018, 12:21 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Thanks!
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Old 06-27-2018, 07:03 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

In for more info on this.
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Old 10-03-2018, 05:14 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

I would also like to get some insight into your code. I've been using a modified version of a Linux PC LT1 ALDL program (ALDL-io) I got from GitHub which I compiled for and am running on a Pi 3. My ecm is a GM MEFI 3 unit which utilizes the general GM ALDL type of commands and data monitor output with a MEFI 3 specific datastream decode definition. Thx

Last edited by rkmason; 10-03-2018 at 05:22 PM.
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Old 10-03-2018, 11:21 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Very cool
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Old 10-05-2018, 04:25 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

That's what I ever wanted to do... Please teach us how to!
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Old 10-07-2018, 01:24 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

I'd be interested in a how to. I'd love to build one that would hang out in the car like in the video.
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Old 12-27-2018, 11:35 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

I'm interested in a How-to on this as well!
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Old 01-16-2019, 03:57 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Me seven!
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Old 02-11-2019, 04:05 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Yes, cool! I grabbed one of these to play around with in the home office. I was trying to run it over wifi, though, and something somewhere kept timing out, or going into sleep mode, disconnecting it from the network that only a reboot would fix. I shelved the project until I get a larger home router so I can hard wire the thing into the network. Other projects, though.....

You're not the only one who's done this. I've seen someone on another forum who's messing with the Pi to datalog on his vehicles.
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Old 02-11-2019, 07:59 PM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

The Pi displaying the stats from the computer won't need a network connection, Unless you are talking a bluetooth connection between the PI and the adapter. I haven't seen many OBD1 units that have bluetooth. It uses the 12v power and the ALDL cable in the picture. The PI would need to be able to run a program that can decode the stream across the USB connection. If I knew how to do that in Python I could probably come up with a cool display.
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Old 02-15-2019, 10:43 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Thats frigin sweet. I need to get something like this for my MS2. This power on/off with ignition power?
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Old 03-26-2019, 08:27 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

Hey OP, I know I'm a bit late to the party here, but can you link your repo? I'd love to extend this to the $42 TBI I'm on.
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Old 03-27-2019, 09:33 AM
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Re: Project: Fully-customizable Raspberry Pi-based ALDL Monitor for OBD-I ECMs

I think he forgot about us. Best guess is he is having a fun time playing with that thing...
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