I just ran into this web site that claims to have 'experts' to answer questions including car issues. For $15, it is worth while to find out if they have a better answer for an OBD scanner for the NHW11. We'll see: Ask Question & Experts Answer You ASAP! Name Your Price, Get Online Answers & Help - Just Answer! Bob Wilson
Do you get your money back, if they can't find one? Hope they don't come back with "Techstream Lite" What were your parameters for the reader, IE: Price ?
I'd already kissed off the $15. I wanted to see if for a fee they had another answer . . . nope. I wasn't expecting much and that was pretty much what I got. I've only met two Toyota technicians I'd ever want to meet again. The first is the husband of Galexy and his is brilliant . . . and got 'separated.' He changed careers and now repairs medical equipment, something that matches is skills and abilities. The other is a local boy who taught me about: Cleaning Prius Throttle Now I don't think he really knows what he did but I'd buy that boy a 12-pack of cold Bud any day of the week . . . hummmm now that is a thought. Regardless, I've still got the T605 on order and it should be here sometime next week. BTW, remember my 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. I've got more work to convert the audio data in into digital but once working . . . I'll have a nice tool. Bob Wilson
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?
I connected the audio input to the K and L lines and used audacity to record the voltage levels. This evening I got the floating point format fixed and loaded one file into excel. I'll use this data to set the thresholds for logic 0 and 1. Then I'll reconstruct the data. Bob Wilson
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..
I used a resistor network: ~600 ohm - each mic input ~6000 ohm - dropping resistor for each The 10:1 ratio brings the voltages down to safe levels. What I found was the "L-line" has no signals. It may have a level but no coding. Sampled at 44,100 Hz, I have good data but trying to recover digital data from audacity traces . . . is like reading digital with an oscilliscope. My "c" program reads the data that was recorded in floating point. I've got a few outliers, possibly max values, that I have to deal with but otherwise it looks to be good data. I can see the 'start bit', bits, and intra-byte timing. My next step will be to build a software decoder and reassemble the bits. Then I should be able to figure out what Auto Enginuity is doing wrong (assuming they are reading the right data.) Fortuantely, I have another scanner that I can use as the 'gold standard' for the fields of interest. This means I can cross check the commands they are sending and results back. . . . Well at least it is not as complex as code breaking. Bob Wilson
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:
I tried justanswer for three different questions on three different subjects, one about my 2001 Prius. One answer was trivial. The Prius question was never answered. The other question I answered myself before I received any response from Justanswer. I believe that the service is useless.
