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'''This page lists some applications that could be implemented with''' using large part of '''GenBoard HW''' (or as is) and considerable part of the firmware (but extension is needed): * http://www.popsci.com/popsci/auto/article/0,12543,611352,00.html * chicken incubation system * industrial control * help GenBoard/VerThree/Testing * GoBox * AutoTrans (automatic gearbox) * OvenControl * get lotsof ideas from here: http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/ Ok. I'm new to wiki, so this is going to be a mess. This seems to be about the most reasonable place to post (I'm more of a forum guy). I want to develop an open source engine piggy-back controller. The idea is very similar to your project here, except I want to minimize initial tuning by taking inputs from the stock ECU. My target application is the Dodge SRT-4. We already have 4 different very well tuned ECUs. Many hours went into their testing and I want to preserve much of that. However, I want flexibility to tune my engine based on my modifications. So, the plan is to have inputs for the fuel injector and ignition drives from the stock ECU and modify them slightly as needed. For example, adjusting fuel injector pulse widths to trim out excess fuel at WOT when using W/I. I don't know if maybe I'm re-inventing the wheel and there already is such a project underway, or what... Perhaps a modified GenBoard could perform this task? Anyway, if you really interested in details, check out my long-winded thread at srtforums. http://www.srtforums.com/forums/showthread.php?p=2033955 The first page summarizes most of the project. thanks. sorry for the mess. ----------------------------- Doing that as a piggy pack controller seems both very cool and overly complex. I wonder if you'd be better off a) making a plug'n'play loom set to run a native VEMS ECU, or b) using a simple input (eg, MAF) interceptor to adjust fueling. Eg, [http://autospeed.drive.com.au/cms/A_2418/article.html here] and [http://autospeed.drive.com.au/cms/A_2420/article.html here]. ----------------------- Thanks for the info! Good ideas. A. I could run VEMS full stand-alone, but I don't really feel like going through all the re-tuning. I have a good tune as it is, I just want minor changes. Plus, I'd need to wire up a lot more sensors. Perhaps someday I will. B. We don't have a MAF sensor. The ECU determines MAF from MAP, temp and RPM. Perhaps what I might like to do is re-layout the GenBoard to change some of the extra injector drivers to be inputs instead of outputs. We only have 4 cylinders and it will stay that way. Also, change half the ignition drivers to be inputs. I'd also need to add some DACs. I'm not sure if I saw any on your design. Is it possible to get copies of the schematics and PCB layouts in their native format? I'm not sure what capture program you are using, but I can probably get it or use it at work. I'm an embedded software developer and I've done PCB layouts before. It shouldn't be hard for me to tweak your design to my purpose. Thanks!
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