Captain Obvious Posted January 30, 2013 Share #37 Posted January 30, 2013 I don't think it would be a completely different can of worms. If the design includes a microcontroller and it had enough processing horsepower remaining after taking care of all of the required necessary tasks, then yes... OBD interface could be included.I'm not sure how much value you would get out of it though. Sure, you would be able to purchase a small cheap code reader to connect to it, but the vast majority of the typical parameters wouldn't apply.You could probably make it so you could read AFM position, WTS temp, ATS temp, TPS position, and injector pulse width out.Are you thinking more value than that? Link to comment Share on other sites More sharing options...
TomoHawk Posted January 30, 2013 Share #38 Posted January 30, 2013 (edited) Yes, you have the idea right; some kind of simple OBD output, and air-fuel ratio would be nice, if it is so equipped. I already started looking for a Bluetooth OBD adapter for other purposes/vehicles. eBay has them, cheap. BTW- after I got the car, I took it to the e-check station to see what condition it was in, and the tech guy couldn't find the OBD port! An older guy stepped in to explain the car was too old, and exempt. It might be fun to take this "antique" car with "OBD" to a service station, have them scan it, and then drive away after they tell you that the ECU is totally dead and there's no way the engine should be running! Edited January 30, 2013 by TomoHawk Link to comment Share on other sites More sharing options...
Captain Obvious Posted January 30, 2013 Share #39 Posted January 30, 2013 Yes, you have the idea right, and air-fuel ratio would be nice, if it is so equipped. Somehow, I just figured you were going to say that... air-fuel ratio would be a bigger deal. It would require the installation of an O2 sensor, and it would require an additional A/D in the design. Not only that, but it changes a lot faster than the rest of the inputs, so it would have to be scanned more often which takes more processing time. And you also have to provide the data to the scanner with a real time data stream. The other sensors, with the possible exception of the AFM, change a lot slower which means stale data is still good data. Not saying you can't do it, but it's definitely on a different level of difficulty than the rest of the parameters. BTW- after I got the car, I took it to the e-check station to see what condition it was in, and the tech guy couldn't find the OBD port! Haha! That's funny. You know what? We're old. Link to comment Share on other sites More sharing options...
FastWoman Posted February 1, 2013 Share #40 Posted February 1, 2013 OBD?! Heh... Too rich for my blood. I fold.FAIW, I think an O2 sensor is the way to go. You might be able to get by with less frequent scans if you low-pass the A/D output. Actually that's how I would envision integrating O2 input into an analog design. Link to comment Share on other sites More sharing options...
superlen Posted July 17, 2013 Share #41 Posted July 17, 2013 Longtime, no see fellow ZedHeads. Just wanted to update everyone. My son went off to college with the Z car & I got busy with work and life, so the ZFuel project stalled. The good news is my son is now going to switch cars, so I'll have the Z back again. He wanted something with air conditioning and four doors. What's wrong with the youth today? He did manage to put it in the ditch while texting his girlfriend, so I have some more body work and suspension repair to deal with as well. Oh joy. No one hold their breath, but I should be back motivated and moving forward again in a few weeks. I saw some mention of OBD above and yes it will have OBD. It's tuneable via a usb cable -> laptop, so one will also be able to see all the sensors values & fuel control status on screen in realtime. It will have can bus on it, so in the future I could communicate on that bus to deliver a more industry standard OBD if desired. I have a project at work that keeps coming up to design a controller that hangs on the Can bus & does some fuel controlling/manipulation. This is for an automotive aftermarket company (not related to zcars) & their marketing department still haven't decided if they want to start the project and allocate the funds. Depending on when/if they pull the trigger on that may influence how I implement Zfuel's OBD. BTW, O2 sensor support for closed loop will be available. super(slow)len Link to comment Share on other sites More sharing options...
Captain Obvious Posted July 18, 2013 Share #42 Posted July 18, 2013 I got busy with work and life, so the ZFuel project stalled.Called it!! :laugh:Welcome back and good luck with the project. Link to comment Share on other sites More sharing options...
Parman
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