What are the collective blogs like habr, but for engineers?

Question

Do it yourself

Who knows what "live" communities with the publication of their posts and active commenting.
Articles in which publish:
- process engineers;
- electrical engineers;
- civil engineers;
- designers of different directions;
- and other engineering specialties, you can't count them all.
Where else are the novelties and possibilities of CAD, new equipment, their own life hacks and working methods, etc., being actively discussed?

Answer 1

Engineers usually do not cluster in one place
Immediately go to their special resources
Russian speakers with an electronics profile forum.easyelectronics.ru

Answer 2

Reddit is full of stuff like that. You just have to look for the right subs.