That’s odd. How far did you get? Any error?
Federation from your instance Lemmy.world to the instance the community is on (programming.dev) is healthy, so that doesn’t seem to be the issue.
My guess would be that you’ve tried to upload an image that is over the size limit - I think this is imposed by your own instance (Lemmy.world), and I’m not sure what the size limit is but I think 5MB per image is pretty common. If you drop the image size or upload elsewhere then link it, does that work?
I feel like it still does sometimes, with some sites that feel like they are nearly a whole OS in themselves.
What about !diyelectronics@programming.dev?
Or if you are using Home Assistant you could post in !homeassistant@lemmy.world
There is a Lemmy community search function here if you want to check other options: https://lemmyverse.net/communities
The guy is 70, I think it’s OK to let yourself go a little at that age.
The article talks about not wanting to be reliant on a service, so I would guess they will try to reduce reliance on the cloud.
You’ll always want some level of cloud so maybe they will look at Owncloud / Nextcloud or some other open source solution they can run themselves?
I tried searching for the original and found heaps that were basically all the same joke.
Hmm odd. Maybe just try again?