Why I Started Keeping a Redstone Journal
Redstone is messy. You build something that works, move on to the next project, and two weeks later you can't remember how that duplexer was wired. I used to sketch things on paper, then switched to digital notes, and eventually settled on something that actually holds up over long sessions.
The Best Minecraft Redstone Journal I've Found
I recommend using Notion for this. It's free for personal use, works on any device, and the database features let you tag components, link schematics, and search by specific redstone terms without rebuilding your mental map every time. The template I use tracks blocks, comparators, repeaters, tick rates, and chunk coordinates for everything I build.
When I'm working on a large project like a 32-slot sorting system with hidden doors and automatic crop harvesters, having a single place where I log the component count, the issue I ran into, and the fix I found saves me from starting over when I return after a break.
There are some caveats though. Notion syncs fine, but if you're building something massive and your journal file grows past a few hundred entries, it starts to lag. I hit that problem with a detailed inventory system that ended up with 400+ rows. The workaround was splitting it into separate databases by project type instead of one giant table. Redstone schematics specifically tend to clutter things quickly, so I keep those as linked pages rather than embedding them directly.
One counter-intuitive thing most people miss: don't just log what you built. Log what broke first. The troubleshooting notes are usually more valuable than the finished design because they capture the edge cases. I spent three days debugging a piston extension that only failed under certain chunk load conditions, and writing down the exact seed and coordinate range where it reproduced turned out to be the only thing that actually fixed it.
Another thing worth noting is that redstone journaling works best when you take screenshots at the component level, not the whole build level. A full screenshot of a complex contraption doesn't help you remember how it works three months later. A photo of just the comparator array or the clock circuit does. I usually do about five to ten reference shots per project max.
If Notion isn't your style, Obsidian is a solid alternative. It stores everything as local markdown files, so there's no sync dependency and no lag from cloud overhead. The tradeoff is that you lose the searchable database view unless you install plugins. For pure redstone note-taking where speed matters more than organization, Obsidian handles it fine. Google Sheets works too if you want something stupidly simple, but navigation becomes painful once you have more than twenty projects logged.
I don't recommend trying to journal everything. You'll burn out in a week. Focus on larger builds that took you more than an hour to construct or troubleshoot. Small clocks and basic doors don't need documentation. The sweet spot is projects between thirty minutes and four hours of build time where the redstone logic has multiple interacting parts.
If you want a template to start with, I put mine on a public Notion page that covers the basic structure: project name, build date, component breakdown table, known issues, and a link to reference images. Search for redstone journal template Notion and the first result should match what I use.