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Subject: SV: [T3] An idea for calibrating the manifold pressure sensor. > I suddenly remembered a program demo I got long ago, where the game port, or > the printer port, on an ordinary PC was used for measuring purposes. > It was a nice Win95 program written in C++. > With that program, up to 8 temp sensors could be driven and read directly > from the printer port (as long as the load was within a few mA), and the > results were displayed graphically on the screen. Way cool! > > There is also a lot of (fairly cheap) Analog/Digital converter PC cards > aviable on the computer market, which can be used for more advanced > measurement and control tasks. > Data sampling and such. > > Now, I'm not much good at electronical stuff or low-level programming, but I > wonder if anyone out there are able, or already have attempted to hack > something together that would give a simple PC the functions of a engine > analyzer (at a low cost). > (After all, the PC was initially born from stuff in the mad IBM scientists > laboratories, just meant to be a data analyze device...not a office > inventory!) > Maybe there already is some cool software aviable? > There is all kinds of equipment out there to do what you are suggesting. RadioShack has a digital multimeter that has a serial output to a computer. You can measure just one point at a time with it, but the cost is reasonable, and the software comes with it. We use it at work to monitor processes at work sometimes. My brother drag races professionally and has a program that will down load data from the "drag computer" in the car, after each run. When we are doing prototype work for the auto manufacturer's, they will take the car out with a laptop connected to it, and read data on the fly while driving. But I am sure these are rather expensive. The last one I saw was being used by Mercedes. (They found out, you don't leave the laptop in the car overnight when it is -40F.) ^_^ There is a company called Omega that has all kinds of aquisition equipment and software. http://www.omega.com/das/ There are also a lot of stuff available that runs under Linux, and it is all open source, which means that it is usually free. A lot of universities use it in there labratories. Russ Wolfe russw@classicvw.org http://www.classicvw.org/ ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org