A few thoughts...
As far as I can tell, smoothing only gets applied after stopping the roast
(ie, hitting 'off'). But I'm not an expert, that is just my observation
from using it for a year.
I use 5s sampling rate and oversampling, and this produces reasonably
smooth RoR values during the roast. And after a "smooth delta" value of 4,
the finished curve is extremely smooth. ;)
Also, regarding Rao's guidance with respect to RoR, he says that a flat RoR
"even for just 1 minute" will have a negative effect, but I interpret this
to mean that you should not worry too much about sample to sample RoR (4 or
5 seconds) as that is probably impossible to control even with the best
And regarding Rao's "1st crack to drop" percentage, have you found a way to
have Artisan display that in real time? ie, if first crack occurs at say,
10:00, how to get Artisan to show a recommended range for ending the roast
based on that?
On Mon, Sep 15, 2014 at 8:36 AM, Fred B <fbacher1(a)san.rr.com> wrote:
I’ve been using the Artisan program for some time now
on an Ambex ym2
with an Omega data logger and a 2 ghz dual core laptop. I just loaded
0.8 and I’m hoping that I might get smoother ROR values with this version
as I see that is one of the improvements. Maybe the issue is the fast
response of my probes? Is there a way to compensate for this in Artisan?
Can you make some recommendations as to the EXTRA settings for the newer
version and maybe something up to date about the effects of using values
too large or too small? My ROR just jumps around too much and by the
time it’s dropping/rising too rapidly it’s almost too late for me to do
anything about it. Could I benefit (or not and why) from using over
sampling or a higher or lower sample rate? I’m at 4.0 now. Which curve
smoothing values affect real time displays and which don’t? I’ve been
reading Scott Rao’s new book and find myself evaluating my roasts and
looking carefully at ROR and 1st to drop percentages so Artisan is so
useful. Thanks so much to all that have contributed to this great program.
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