1/2 ton status
- Mar 23, 2014
- Reaction score
- Ocean Springs, MS
The goal of this little project was to have a 'small' customized screen of certain data streams out of my ECM, as I recently lost my speedo and wanted to reduce the number of gauges. The speedo wasn't that big of a concern anyways since it's been way off since going to 4.11 gearing. But anyways ...
Main challenge was my particular ECM (16147060, 4L80-E trans) isn't as common as the 1227747 ECM, which was used in the same year for the 1/2 ton R/V Burbs and prior years for the C/K platform ... so not a whole lot of subject matter to review.
When doing some researching on how to accomplish this, I came across fbodytech.com from which Steve was doing basically what I wanted to achieve, but with his LT1. He had a good write-up on how to get his program (ALDL-IO) setup on a little Raspberry Pi single board computer.
After looking at the A138.DS and the 'latest' $85-16147060 ADX file and getting some guidance from Steve, I was able to get the streams I was aiming for, as well as coming across a lot more available data available from the ECM, and pieced it all together.
Here is a quick video I just did today, upon wrapping all this up. One thing I didn't cover was the logging part. It writes all the values to a CSV file (real-time, 2 times a second), which can be on a USB thumb drive.
If you like what you see, let me know - I'll be more than happy to give a better run-down on what I did here.