ROR, filters, sampling, over sampling, etc
by Fred B
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.
Fred
3 years, 11 months
Re: [Artisan-user] PID control Background follow
by Marko Luther
Sam,
sorry for that late reply. Did you try changing the "Source" in the p-i-d area of the Arduino Control dialog (activated via the Control button)?
Marko
On 15.08.2015, at 00:24, Sam Malanowski wrote:
> Hello,
>
> I'm having a great time using Artisan with the TC4 and a homebrew fluid bed roaster. I love that the heater control can be driven from a background curve but I'm wondering why the default is to follow the ET curve and not BT? Maybe this is a novice roasting question but when we talk about controlling roast profiles, aren't we talking mostly about BT?
> Is there an option to switch the curve that it follows or control the roast in an even better way?
>
> I'm wondering how everyone else here is using the control feature to get their perfect roast profiles?
>
> -sam
> _______________________________________________
> Artisan-User mailing list
> Artisan-User(a)lists.einfachkaffee.de
> https://lists.mokelbu.de/listinfo/artisan-user
4 years, 3 months
Re: [Artisan-user] TC4 serial port with AartisanQ_PID sketch erratic readings
by Frans Goddijn
> Im getting erratic random temperature readings (serial monitor) everytime I plug the TC4 to the computer with the USB.
Is the computer connected to the power source? If it’s a laptop, try running on the battery alone.
At home I have no problems but when I was on trips, I noticed that “erratic” seemingly random temperature reading when the laptop was on the power source. I don’t have a TC4 but it had to do with the grounding of the probe.
Recently someone else on the list also mentioned possible grounding issues and their workaround, nothing to do with Artisan but all just the electronics.
Frans
4 years, 3 months
Re: [Artisan-user] PID control Background follow
by Richard Held
Looks nice! Care to share your homebrew roaster specs? I'd love to be able to do this!
Sent from my iPad
> On Aug 14, 2015, at 6:24 PM, Sam Malanowski <sjmalski(a)gmail.com> wrote:
>
> Hello,
>
> I'm having a great time using Artisan with the TC4 and a homebrew fluid bed roaster. I love that the heater control can be driven from a background curve but I'm wondering why the default is to follow the ET curve and not BT? Maybe this is a novice roasting question but when we talk about controlling roast profiles, aren't we talking mostly about BT?
> Is there an option to switch the curve that it follows or control the roast in an even better way?
>
> I'm wondering how everyone else here is using the control feature to get their perfect roast profiles?
>
> -sam
> _______________________________________________
> Artisan-User mailing list
> Artisan-User(a)lists.einfachkaffee.de
> https://lists.mokelbu.de/listinfo/artisan-user
4 years, 3 months
Re: [Artisan-user] for Kim
by Frans Goddijn
Hi Kim,
Every mail from the list has this link at the bottom:
> https://lists.mokelbu.de/listinfo/artisan-user
That provides you with a panel with all options including unsubscription.
It might look a little cumbersome but that is to prevent others from being able to subscribe / unsubscribe you without your consent.
The list is managed by volunteer work so even though a list manager could do all your work for you, it’s more reasonable that you do it, just like you or someone with your mail address subscribed at one time.
As specified in the link below every posting you get from the list, unsubscribing is very easy:
Go to
https://lists.mokelbu.de/listinfo/artisan-user <https://lists.mokelbu.de/listinfo/artisan-user>
Then see:
"To unsubscribe from Artisan-User, get a password reminder, or change your subscription options enter your subscription email address:”
Then you see this:
"By clicking on the Unsubscribe button, a confirmation message will be emailed to you. This message will have a link that you should click on to complete the removal process (you can also confirm by email; see the instructions in the confirmation message).”
Then you’re done!
Frans
4 years, 3 months
Bug??
by Sam
Hi,
After I have finished a roast and hit the "Off" button, then the "Reset"
button in preparation for the next roast. When I then hit the "On" button
to start the next roast, I get an access violation error and need to force
close Artisan and restart it again (screenshot attached). I am using a
Yocto-Thermocouple so don't know if this is what's causing Artisan to
generate the error.
Cheers
Sam
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
4 years, 3 months
Re: [Artisan-user] PID control Background follow
by Frans Goddijn
> Op 19 aug. 2015, om 06:41 heeft Sam Malanowski <sjmalski(a)gmail.com> het volgende geschreven:
>
> I gave it a shot on a small roast tonight. Didn't spend a whole lot of time tuning the PID parameters but I'm pretty happy with the result as is.
Looks good!
My BT looks a lot like your ET (before the roast I send the required key points of time/temp to the PID):
4 years, 3 months
Re: [Artisan-user] PID control Background follow
by Assaf Litai (Gmail)
I guess in a fluid bed the air temp doesn't lag the heater temp.
In a drum type roaster, I wonder if it can be made to work.
Regards,
Assaf Litai (on a mobile device)
> On Aug 17, 2015, at 20:38, Sam Malanowski <sjmalski(a)gmail.com> wrote:
>
> I'm still working on probe placement for reliable BT but so far using the follow control with ET works fairly well. It just requires a lot of guess and check with the profile designer in terms of temperature differential. What I think I would like to do is use the designer (awesome feature btw) to draw BT curves, then calibrate my PID parameters to follow BT in a way that doesn't cause crazy fluctuations in ET. My gut tells me that this actually won't be too hard with a fluid bed roaster since my last roast following ET did a pretty good job tracing my BT curve.
>
> I may try this out by switching the probe locations and tricking the software so that the BT probe reads as ET in Artisan.
>
>> On Sun, Aug 16, 2015 at 2:57 AM, Assaf Litai <assaf.litai(a)gmail.com> wrote:
>> Are you guys sure about this? If this works for anyone I'd appreciate understanding how...
>>
>> BT is a substantially lagging parameter (mainly due to the thermal mass of the beans, but that is compounded by the heater coils, the air conductivity, etc.). So trying to close the loop on it is bound to overshoot and oscillate considerably. For a drum roaster even ET is nearly impossible to control. Outside the drum (which I labelled MET) is controllable - but tends to limit power when needed and overdo power when finesse is required.
>>
>> I gave up on PID for roasting (for my Quest M3) on all but warming up and intra roast temp control. Did I give up too soon?
>>
>>
>> -----Original Message-----
>> From: artisan-user-bounces(a)lists.einfachkaffee.de [mailto:artisan-user-bounces@lists.einfachkaffee.de] On Behalf Of Steffen Müller
>> Sent: Sunday, August 16, 2015 12:29 PM
>> To: Marko Luther <marko.luther(a)gmx.net>
>> Cc: artisan-User(a)lists.einfachkaffee.de
>> Subject: Re: [Artisan-user] PID control Background follow
>>
>> Hi Marko,
>>
>> that’ll be absolutely cool. I am thinking of using the designer function, have a BT curve there created and let the PID follow this pre-designed curve.
>>
>> Best regards,
>>
>> Steffen
>>
>> > Am 15.08.2015 um 07:45 schrieb Marko Luther <marko.luther(a)gmx.net>:
>> >
>> > Dear Sam,
>> >
>> > that "follow background" feature is that old that I almost forgot about it and might not be much in use. I will investigate and check if I can make this configurable also to follow the BT.
>> >
>> > Thanks for the ping,
>> > Marko
>> >
>> > On 15.08.2015, at 00:24, Sam Malanowski wrote:
>> >
>> >> Hello,
>> >>
>> >> I'm having a great time using Artisan with the TC4 and a homebrew fluid bed roaster. I love that the heater control can be driven from a background curve but I'm wondering why the default is to follow the ET curve and not BT? Maybe this is a novice roasting question but when we talk about controlling roast profiles, aren't we talking mostly about BT?
>> >> Is there an option to switch the curve that it follows or control the roast in an even better way?
>> >>
>> >> I'm wondering how everyone else here is using the control feature to get their perfect roast profiles?
>> >>
>> >> -sam
>> >> _______________________________________________
>> >> Artisan-User mailing list
>> >> Artisan-User(a)lists.einfachkaffee.de
>> >> https://lists.mokelbu.de/listinfo/artisan-user
>> >
>> > _______________________________________________
>> > Artisan-User mailing list
>> > Artisan-User(a)lists.einfachkaffee.de
>> > https://lists.mokelbu.de/listinfo/artisan-user
>>
>> _______________________________________________
>> Artisan-User mailing list
>> Artisan-User(a)lists.einfachkaffee.de
>> https://lists.mokelbu.de/listinfo/artisan-user
>>
>> _______________________________________________
>> Artisan-User mailing list
>> Artisan-User(a)lists.einfachkaffee.de
>> https://lists.mokelbu.de/listinfo/artisan-user
>
4 years, 3 months
Re: [Artisan-user] PID control Background follow
by Marko Luther
Dear Sam,
that "follow background" feature is that old that I almost forgot about it and might not be much in use. I will investigate and check if I can make this configurable also to follow the BT.
Thanks for the ping,
Marko
On 15.08.2015, at 00:24, Sam Malanowski wrote:
> Hello,
>
> I'm having a great time using Artisan with the TC4 and a homebrew fluid bed roaster. I love that the heater control can be driven from a background curve but I'm wondering why the default is to follow the ET curve and not BT? Maybe this is a novice roasting question but when we talk about controlling roast profiles, aren't we talking mostly about BT?
> Is there an option to switch the curve that it follows or control the roast in an even better way?
>
> I'm wondering how everyone else here is using the control feature to get their perfect roast profiles?
>
> -sam
> _______________________________________________
> Artisan-User mailing list
> Artisan-User(a)lists.einfachkaffee.de
> https://lists.mokelbu.de/listinfo/artisan-user
4 years, 3 months
