14point7 iDash
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Author:  Fred [ Sun Mar 05, 2017 10:10 am ]
Post subject:  Re: 14point7 iDash

That noise is uni-directional! Makes normal averaging of any kind useless. Do you have a median filter available? Even that might not be OK. Another option would be a floor filter over X samples. I could easily add this to my viewer if you send a raw CSV and upload a pic of it. Let me know.

Author:  Nige [ Sun Mar 05, 2017 10:48 am ]
Post subject:  Re: 14point7 iDash

That could be extremely handy, I'll see if I remember to send tomorrow. The Matrix/tables I can filter the data to exclude above/below values which makes that useful, but doesn't give me the option in the graph view.

When looking at the log graph I can see the values that are "real" so I'm not overly worried. But yeah, it's annoying lol.
I was wondering about a filter along the lines of "exclude if further than X from previous value" but that would get awkward too methinks.

Author:  Nige [ Wed May 03, 2017 9:21 am ]
Post subject:  Re: 14point7 iDash

so... I already had MLV and mucked around with filtering. Ended up adding a delta channelf or each channel, then having it use the previous value if the delta was above X value (experimented to get a a balance between getting rid of spikes and retaining actual data - reached a point where it was ALL a copy of the value before it lol.

Anyway, much better:

I also did a Lambda channel calculated from AFR (I know, I should record in lambda lol!) and a TPS calculated channel from Vin1 which was TPS voltage.
Interesting, I must be getting better with Lambda scale as it had more meaning to me than the methanol AFR scale tables did. Traditionally I'd use Petrol AFR scale in the past.

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