Automatic Gas Control

Elvio (Mestre Cafeeiro, Brasil) is demonstrating how he uses a Phidget RC (see Artisan v1.6.1) to automate the gas control on his Atilla roaster.

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Artisan 2

Here is artisan 2!

Using Artisan Designer

An excellent video by Alan demonstrating how he uses the Artisan designer to develop roast profiles. 

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How to document sampling?

Someone just asked how to document the moments she takes samples mid-roast using the tryer?

How close?

Ever wondered how close you duplicated a previous roast profile? A standard measure in statistics to express the average error between a curve and its target is know as Mean Squared Error (MSE) which computes the average of the squares of the single discrepancies between the data values and their targets.

weight • volume • density

Knowing the density of your raw beans is key to adjust your roast profile. Knowing the density of roasted beans is important for successful blending. Keeping the bean density of a product constant helps to keep your customers happy.

Keep an eye on the delta!

Once you have developed a profile for a coffee you want to precisely duplicate that one in future roasts. Artisan allows to load this successful profile in the background serving as a template for your production roasts. While seeing the delta of your current roast curve and that template helps you to decide if you should slow down or speed up your roast at any moment, especially if zoomed into the graph somewhat. However, often a numeric value expressing this delta is easier to work with. What about adding another LCD to show this delta?