I am wondering how do hobbyists approach this matter. Do you keep log books? If not, do you wish you did?
I have a lab book that's not in the lab :->
The problem is I'm always working on projects at different locations (the lab, home, work (when I worked)) so I was not disciplined enough to take my lab notebook with me. The result was you get lazy and never end up using it. You end up writing stuff down on post-it notes with the intention off adding it to the lab book later, but of course you never do. Yeah, I could have multiple lab notebooks, but you know...
Lately I've started a Google Doc for each project, and jot down notes into that at whatever location I'm working at. Pretty handy.
Test results and design calcs/ideas are two of the most valuable types of info to jot down.
How about professionals? Are you requested to keep log books like that in the industry?
Yes, common requirement at the large military and commercial companies I've worked for.
Altium, no. Documentation, what's that?
Dave.