Are you mostly interested in historical hardware or hardware in general?

If the latter, Bunnie’s blog might be of interest: https://www.bunniestudios.com/blog/

Or perhaps Michał Zalewski’s newsletter and web site: https://lcamtuf.substack.com/archive, https://lcamtuf.coredump.cx/

I really enjoy Ken Sherriff's posts about reverse engineering processors.

https://www.righto.com/

I edit https://makernews.substack.com/ there’s often links in it to blogs about old/historical bits of hardware.

I'll add that I would love highly active RSS feeds on the topic.

Lobsters has some good aggregate information on hw/electronics https://lobste.rs/t/hardware

There are also some good YouTuber creating great content like

@JeffGeerling

@bitlunislab

@kevinmcaleer28

@AndreasSpiess

@CarlBugeja

@PhilsLab

To name some