Did someone share one of my old videos this morning? It's also available on PeerTube:
https://video.typica.us/videos/watch/a4aecb05-2e2b-4b80-a532-b1a78155139b
One of the limitations of the new device I've been using is that it constrains its output to a range ~25-95 Agtron gourmet scale, but one of the first significant events in coffee roasting involves that measurement going off the scale (my benchtop analyzer would put it around 130). Decaf coffees, however, often start out brown so they reach their brightest at a reading that's still in range. That inflection from coffee getting brighter to coffee getting darker is where tasteable chemistry starts
It always feels a little strange fixing a bug in a program written in a language where I rate my proficiency as "I know of this language", but having a REPL helps. Anyway, this is how my current graphs looked today. Much better. I'm still not doing anything on the receiving end to clean up that signal.
Author of Typica software for coffee roasters.