Saturday, May 30, 2020

Special Events Annotations

A common question asked when analyzing a completed roast profile is "what was the time and bean temperature when that gas change was made?"  To help answer this and similar questions, Artisan v2.4 introduces customizable, data driven special event annotations.  Special event annotations add detailed information in text format to the special event lines.  These annotations speed interpretation of a profile in post roast analysis by writing out the pertinent information directly on the graph. The user has broad flexibility when defining the text and data to be displayed.  This allows bespoke annotations that meet the user's individual needs.

Friday, May 29, 2020

Autosave File Naming

Artisan v2.4 introduces a powerful new capability to create custom data driven file names.

Artisan has always had the ability to automatically save a profile to disk at the end of a roast, or on a keystroke during the roast.  This is handy to prevent losing a profile due to forgetfulness or other accidents.  The file name auto-generated for saving included the roast title or a text string and the date for identification but was otherwise not very descriptive. 

Thursday, May 28, 2020

Roast Simulator

The Roast Simulator allows to replay a previously recorded roast session. It allows to play with events, alarms, and other settings without wasting coffee.

Wednesday, May 27, 2020

Profile Transposer

The temperatures recorded and logged in profiles during roasts depend on the exact probe placement among other things like airflow. This makes it hard to compare profiles recorded on different machines. Luckily there are some points in a roast that can be identified based on physical changes of the beans during a roast, like the yellow point (DRY) and the start of first-crack (FCs). The recorded temperatures at those points can be compared and used to construct a mapping from profiles recorded on one machine to those on another machine. The profile transposer is a tool that supports the construction and application of such mappings along the temperature axis, but also along the time axis to extend or compress a profile.

Tuesday, May 26, 2020

Roast Comparator

While Artisan always allowed to load a second profile into the background, sometimes you want to compare the shape of more than two profiles. For this we introduced the Ranking Reports already in 2016 which allows to produce a nice Web page containing, next to sortable tables with the key data points of the selected roasts, a chart of all selected profiles. The drawback of this approach is that the report is static in that it is not possible to apply ad-hoc changes to navigate the representation. The Comparator allows to compare profiles dynamically.

Sunday, May 17, 2020

Displaying Development Time Ratio in Artisan

Recent roast profile analysis has focused on using Development Time Ratio (DTR), rather than time, as being the appropriate measure for making changes in power or air flow after first crack begins.  Artisan allows multiple excellent methods to display DTR, and many other useful metrics too. This post will discuss how DTR can be displayed in Artisan during and after roast logging.