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10/18/2020 3:27 PM
How was the Uganda Bugisu Ken?

10/17/2020 7:46 PM
Roasted Ethiopian Burka Guidina Estate Natural Organic from Limmu

10/07/2020 9:13 AM
Happy Mug .. Uganda Bugisu on its way.

10/05/2020 2:44 PM
yes, big thanks for getting homeroasters upgraded and cleaned up! Remember, no less than 3 wheels!

10/03/2020 9:22 AM
Thank you for all that you do!!!

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Using a TC4 with Artisan Roaster Scope
greencardigan
best post

Hi all,

I've put together a few basic tutorials showing the setup required in Artisan Roaster Scope to log and control using a TC4.




Edited by JackH on 10/10/2017 9:53 AM
MaKoMo
Excellent videos documenting Artisans and the TC4s PID capabilities (as expected the TC4 internal PID wins clearly;). I added links to both of your videos on my Artisan blogs Overview page at https://artisan-roasterscope.blogspot.de/p/contents.html. At one point we should write a proper blog post documenting and linking all relevant TC4/Artisan information. For example, it was new to me that you can switch digital ports via serial commands triggered from Artisan buttons. Nice!
greencardigan
I think the Artisan PID is also very good too. Maybe I just needed to have different P I D parameters set. In the Ramp/Soak example with Artisan PID I used higher values and it followed the profile almost perfectly. I'm running the roaster with no beans, so the PID parameters I'm using do not reflect normal values.
JackH
Brad, thanks for all your work!
You get the award!
---Jack

KKTO Roaster.
Justinpogge
know were i can source a tc4?
koffeegrounds
fantastic videos , do these controllers also regulate my blower speed ?
greencardigan
The software can do phase angle control for an AC blower or PWM control for a DC fan. However you need the an external transistor circuit to switch d DC blower. And you need an external zero cross detector and random fire3 solid state relay to control an AC blower.
Gullygossner
Thank you for the videos showing how to setup artisan for use with the tc4, very easy to follow.

I tried my first roast last night using the the background pid control and am very pleased with how the first roast went.

I did run into two issues but didn't have much time to troubleshoot.

1. On my first background roast, the SV slider would move as the roast progressed but the heater slider did not move accordingly. The heater values were charted on my graph. Is this the expected behavior?

2. Once I completed the first roast, within artisan I 'selected' reset, loaded beans and then selected 'charge'. My settings within artisan are to use the tc4 onboard PID and for the PID to turn on upon selection of the charge button. The SV seems to go to the first value at charge but never progresses past the first sv of the background profile. Does the tc4 need to be unplugged and reinitied after each roast to follow a background profile? Does artisan need to be closed and reopened?
renatoa
If PID is checked in the TC4 dialog, then heater is controlled by Arduino, not by Artisan.
Artisan send to TC4 the command, PID;SV;150 (I want 150 degrees set value), and the on board PID will compute the required power to accomplish this task.
This power level is sent to Artisan via the ArduinoTC4 56 extra device, that's why it is known by Artisan and is charted.

2. The right sequence is: Reset, (optional On), then Start.
When pressing Start, depending on your setup and Artisan settings, it could auto detect charge, or you have to manually press Charge, to start profile.
Pressing Charge without Start do nothing.
Edited by renatoa on 09/25/2020 2:24 AM
Gullygossner

Quote

renatoa wrote:

If PID is checked in the TC4 dialog, then heater is controlled by Arduino, not by Artisan.
Artisan send to TC4 the command, SV150 (I want 150 degrees set value), and the on board PID will compute the required power to accomplish this task.
This power level is sent to Artisan via the ArduinoTC4 56 extra device, that's why it is known by Artisan and is charted.

2. The right sequence is: Reset, (optional On), then Start.
When pressing Start, depending on your setup and Artisan settings, it could auto detect charge, or you have to manually press Charge, to start profile.
Pressing Charge without Start do nothing.


Thank you for the reply renatoa.

So for issue 1 this is the expected behavior for my setup and I am fine with that, just wanted to confirm.

For issue 2, I am pretty certain that is sequence I followed but I will have do some further experimentation on my next roast. I was a little baffled that it worked for the first roast but not the second roast. I ended up doing the second roast manually using the heater slider I artisan.
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