One of the things I like about this video is that it shows how Typica can communicate with simulated hardware on Linux using ModbusPal and tty0tty. That's not useful for someone just using the program, but it's very useful for someone developing new roasting features who may not want to be tethered to a roaster or plug in testing hardware to work on that.

A later version of Typica introduced the ability to simulate hardware directly in the program.

https://video.typica.us/videos/watch/235ee3db-09bf-4b12-a2d6-4f86a66c4f8e