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What were your parameters for the reader, IE: Price ?

 

Where was my wife last night!!!! (tribute to 39 steps)

 

Hi , sorry been away for a while, concerning:

"problem with Auto Enginuity not handling MG1 torque? Well this morning I spent a little time on the 'c' program that reads the audio file"

What exactly do you mean by audio file?

 

Hi Bob, well that sounds very cool indeed. If you mean connecting K&L lines (12v logic?) directly to your sound board audio rec. input, the soundboard a/d and frontend circuitry to the DSP chip would not want to see anymore than about 1.5v p-p max..but normally a standard audio line level signal 0-1v p-p and thats volume all the way up. I would take an audio transformer, say around 1K to 1K windings and then feed the secondarys through an attenuator before the audio rec. input. This is just a couple of simple resistors (ea. line) even making the "series" one a pot for calibration. I have blown the input of one of my soundboards, luckily not the notebook, feeding way too much on the input -that time it was from an audio signal but I would think feeding 12v logic levels as well directly to the soundboard is only a matter of time. It will begin to sound "tinny" right before the failure. Just 2c towards your good idea, and maybe save another soundboard..

 

Ok Great -well on second thought, depending on the frequency of the pulses, the transformer idea would only have a "spike" on the output either pos. or neg. going depending on the transition of the pulse at the time, it would be worse at low freqs. Duh... transformers pass ac not dc. So you have the attenuator circuit though which would be required. That should be ok by itself. The next best thing would be to have a good analog storage Oscope to capture the waveforms, then go back later and compare. I haven't looked at any signals yet on this, just trusting what AE says for now. Actually on the gen1 I am now using the scangauge daily to monitor SOC and MG2temp, But when it finally does have a problem I will be at the mercy of AE. A friend of mine here is using basically the same idea but he's injecting a low amplitude signwave (audio freq) into an unknown circuit and measuring the results with the soundboard..sort of an audio freq. Bode plot -interesting indeed. Thanks for all your work on this Bob, and I will contribute where I can for sure. :rockon:

 

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