The clock program discussion at the end is a nice glimpse into how simple the core logic really is: count interrupts, build seconds, minutes, hours in variables, then map them to columns. The hard part isn't the concept, it's the implementation experience.
It's the same satisfaction of building something methodically and watching it come together — that rewarding feeling is what I enjoy at https://thorfortunes.com.de Great build, and kudos to Frank for the patient mentoring!