Marsh Ray

Mostly computer and technical stuff. Radical listener. Tries to be a good person.
#Rust #UA

Marsh Ray boosted:
2025-07-02

I have heard it said that tech people do not commission enough art.

ericwbailey.website/published/

2025-07-02

Kindly stop and spare a thought for all the folks affected by the mass layoffs of recent weeks.

2025-07-02

@JesseSkinner Because a multi-process app is a distributed system.

2025-07-02

@tedyapo I’ve asked several mystically-inclined people this, none had any idea.

The concept goes all the way back to Pythagoras.
He probably would have agreed that it should be quantifiable in physical units.
en.wikipedia.org/wiki/Musica_u

Marsh Ray boosted:
2025-07-01

When this case first came out, I was talking to a relatively senior Finnish journalist about freedom of the press in Finland. We came to the conclusion that Finland's then best in the world ranking on press freedom was entirely down to the fact that the press had never wanted anything that the government wasn't ok with having in the papers. This decision is broadly incompatible with freedom of expression. Prosecuting folks who agreed to keep state secrets is one thing. Accusing journalists of treason, let alone convicting them, for publishing material that in their professional opinion was newsworthy is completely unacceptable. The Finnish national security bureaucracy does and must not be above the constraints of international human rights law, and must not be permitted to either constrain a priori or decide post hoc what is in the national interests. I assume this will be appealed and that the Finnish Supreme Court (or, failing them, the European Court of Human Rights) does the right thing. This case has already caused a significant chilling effect on Finnish journalism — already not in a great position — and this is happening at a time when Finland's national security position and responsibilities are changing rapidly. We need transparency and accountability in the national security bureaucracy now more than ever.

yle.fi/a/74-20170451

Marsh Ray boosted:
Jason Lefkowitzjalefkowit@vmst.io
2025-07-01
The “you wouldn’t download a car” meme, but it says “you wouldn’t halt a problem”
2025-07-01

@karppinen Let’s just abolish remote loading of anything from email entirely.

2025-07-01

@karppinen Likely the MPP feature broke users who commonly received emails containing resources requiring a corp network or corp VPN connection to access.

2025-07-01

@AlecLongstreth Investors be like
“Nice…”

2025-07-01

@clauclauclaudia @rmd1023 That would likely have been done for specific newsgroups that were both high bandwidth and latency tolerant (eg alt. binaries. *). Most newsgroups were used for email mailing list-style discussions.
@SteveBellovin might know more about the Quantas claim.

2025-07-01

@rmd1023 @clauclauclaudia Starting up a new Usenet server required such a large amount of data compared to maintaining it ongoing, I’d be surprised if this didn’t happen.

It’s still a thing:

Marsh Ray boosted:
2025-07-01

Conversations don't have to be a competition to prove who's smarter.

It's OK for other people to like things that aren't impressive, no matter how many Youtube videos break down 28 ways they're "objectively" wrong.

Gatekeeping is always a shitty thing to do to someone.

Sometimes, it's more about what a person is trying to say than the tiny incorrect details in how they're saying it.

Don't punish people for trying, especially when they're awkward or don't get all the facts right. It's hard for some of us to put ourselves out there.

I've experienced more of the above on "Fediverse" than anywhere else, but there's no algorithm here encouraging toxicity.

Check the instinct to feel good by putting others down. Encourage other peoples' passions, *especially* when you don't share them.

Don't stomp through someone else's garden on the way to your own. Water their flowers along the way.

2025-07-01

@slyka @tedyapo Yeah you generally want to avoid having power distribution currents traveling through signal lines. At best it’s a transmitting antenna, at worst it can be a serious safety hazard.

Even very cost-conscious systems designed to operate entirely inside a metal box will still run a ground wire right alongside each power supply line, so that current can go right back out the way it came in.

Star ground.

IBM PC drive power connector
2025-07-01

@RueNahcMohr It’s like a printer ossuary.

2025-06-30

@slyka @tedyapo What’s the ground return path for the +15V and -15V supply current?

2025-06-30

@slyka @f4grx A microamp or three could easily arrive inductively through a ground loop.
If you have multiple pieces of PSUs and test equipment on the bench, look at the area of the loop the leads make. Even the AC power cords, USB devices can do it.

Maybe a star ground for all equipment would help.

Can you put a little battery pack right at the board for testing?

(and moar capacitance)

2025-06-30

@slyka @f4grx How much ripple is there on the power rails?
Does changing the length of the power supply wires change the frequency?

2025-06-29

@raiderrobert I think it’s likely related to the tendency of power-law distribution arising from random processes. E.g., if we make a list of causes, and then effects arrive and get attributed to them by “luck”, 80-20 could arise naturally.
This looks interesting:
scholar.harvard.edu/files/xgab

Marsh Ray boosted:

The power supply is simple, because the 386 I used only needs 5V. I took the AT supply and simply removed all the bits that were not a buck converter. (tho I did have to replace the transformer with an inductor.)

Marsh Ray boosted:
ana veronicaana@starlite.rodeo
2025-06-29

don't give up on humanity like those soulless creeps want you to. there's still a lot we can save. there's still a lot worth saving

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