I was thinking of starting a blog with just articles of technical things that I know.
Just out of curiosity, if you were to write “semi-decent” articles on a regular basis with no serious marketing efforts (SEO, sharing on social media, etc), can you expect at least a handful of visitors via natural web osmosis? I’m talking tens of people per month.
You'd have to do a little promotion to get that level of traffic. Drop links where you think interested people might see them, find excuses to link your posts where they answer someones question, etc. Post links to your own social media, "i write a thing."
The "base load" traffic of bots and crawlers and script probes will be 10x "real" traffic, and it may be hard to see that people are visiting your site.