Quote:
Originally Posted by miguez
Hmmm, off to look for Nissan's CAN protocol. The guys at UpRev figured it out, I wonder how. Do you have more info on it?
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Well CAN is an industry standard of some kind (Car Area Network), but apparently mfgs have their own proprietary extensions or something of that sort. I don't know all the details, I never looked at all of this in depth. But apparently, being able to use CAN and/or mfg-specific protocols or extensions is what allows units like the Magden one to read data at high update rates. Baseline OBD-II communications only send updates at 3Hz intervals (3 updates per second), and that's assuming you're only monitoring a single value. With 5+ values being read to feed your digital gauges, basic OBD-II would be too slow to be useful for some gauges.