Hackaday.com comes to mind. That's a blog with those tinkering things. Hackaday.io is a big base where people store their schematics and worklog, present their inventions and tinkering as they happen.

Hackaday is amazing - so many cool, inspiring ideas. It’s been around a very long time too.

It's also owned by Siemens via Supplyframe. That means its content is controlled to a certain degree. Sort of like the way Vice is controlled by its owners. In that way it could function as controlled opposition. Be careful what you submit too.

I wonder if it'd be possible to create a Hackaday-type site with HN content. hackernewsbooks.com >> hackernewshacks.com