ansible (u/ansible) - Readit News

ansible commented on PCBs, copper pours, ground planes, and you lcamtuf.substack.com/p/pc... · Posted by u/surprisetalk

aidenn0 · a year ago

So is the default for a 4-layer board something like components/ground/power/components?

ansible · a year ago

If you don't need components on the bottom side, it saves money to not do so. That means the board doesn't need to go through another pass on the SMT machine.

Even if a board is double-sided, it is common to avoid putting major ICs on both sides, unless the space constraints are severe. Often, people will only put passive components on the bottom side.

ansible commented on Stargate Project: SoftBank, OpenAI, Oracle, MGX to build data centers apnews.com/article/trump-... · Posted by u/tedsanders

jhallenworld · a year ago

Oracle's cash on hand is presumably irrelevant- I think they are on the receiving end of the money, in return for servers. No wonder Larry Ellison was so fawning.

Is this is a good investment by Softbank? Who knows.. they did invest in Uber, but also have many bad investments.

ansible · a year ago

> `... they did invest in Uber, but also have many bad investments.`

The one I really don't get is that they funded Adam Neumann's new company after the collapse of WeWork. How stupid do you have to be to give that guy any more money?

ansible commented on Trailbase: Fast, single-file, open-source app server built using Rust and SQLite github.com/trailbaseio/tr... · Posted by u/thunderbong

jagged-chisel · a year ago

There’s this whole thread about string handling. Does the Rust API into SQLite not support prepared statements?

ansible · a year ago

You can insert arguments into an SQL statement with the (?1) style syntax. See the example here:

https://docs.rs/rusqlite/latest/rusqlite/

ansible commented on Greenwich: an experiment in collaborative links readpolymathematics.subst... · Posted by u/onlyfootnotes

riffraff · a year ago

I did, but I can't say who that username is

ansible · a year ago

Well, that would be an awkward DM to write. "Hello, you invited me to the website, but I don't actually know who you are."

Modern problems...

ansible commented on Greenwich: an experiment in collaborative links readpolymathematics.subst... · Posted by u/onlyfootnotes

riffraff · a year ago

I can't actually remember who is the person who I requested the invite from, I think they were given out somewhat freely by some users.

ansible · a year ago

You can look on your user page, or search for your username on the user tree page.

ansible commented on Greenwich: an experiment in collaborative links readpolymathematics.subst... · Posted by u/onlyfootnotes

Multicomp · a year ago

Haha that's my line! I would guess that those people who are already on the seafood website know other technical people in their day-to-day workspaces like silicon valley or Palo Alto or wherever, so it's easy for them to get a link. Meanwhile for those of us on the opposite side of the US or, barely in the Anglo-Sphere at all, we are on the outside looking in and are not likely to get a link just by being mostly lurkers and occasional contributors.

At least for me, I'm the only HN user I know except my dad who doesn't even post, he just got lurk links from his knee if the woods like hackaday.

ansible · a year ago

I requested an invite from a guy I have only known via Reddit, we've never met IRL.

ansible commented on Greenwich: an experiment in collaborative links readpolymathematics.subst... · Posted by u/onlyfootnotes

arkh · a year ago

Invite only networks were you're responsible for the people you invite à la what.cd : your invitee does something against the rules? They get banned and you get banned.

ansible · a year ago

That is basically the idea behind https://lobste.rs/ . There's approximately zero spam or other bad behavior.

You can look at the full user tree (https://lobste.rs/users) and see if there's anyone you know who might be willing to invite you to join.

ansible commented on A post by Guido van Rossum removed for violating Python community guidelines discuss.python.org/t/shou... · Posted by u/oblvious-earth

jgalt212 · a year ago

Who's the un-person you're not allowed to name? I want to register and post his / her name and get banned myself. Perhaps, we should all do this.

ansible · a year ago

Why do you want to stick your opinion into something that you hadn't previously known about? What are you going to positively contribute to the discussion that will move things forward? How does that help?

ansible commented on The gigantic and unregulated power plants in the cloud berthub.eu/articles/posts... · Posted by u/ahubert

dathos · a year ago

I live off-grid, power and water wise, and it really irked me that the monitoring coming with my inverter is only available online. Even when there is a network available the app will not work. I fixed this by getting a raspberry pi connected and reading it from there, but if I disconnect the inverter from the internet it will create a new network so now there is always an open network in the middle of nowhere with no option to disable it.

I'm thinking about screwing it open and desoldering the wifi module but honestly I'll replace it in the next couple of years so I'd rather not kill myself by making a mistake.

ansible · a year ago

The high-voltage side should be separated from the electronics, so it shouldn't be dangerous if you are observant.

It may be sufficient to just disconnect the antennas from the WiFi module, that will help prevent any network connections.

ansible commented on Bit-banging a BASIC Birthday thingswemake.com/bit-bang... · Posted by u/debo_

bitwize · a year ago

As dodgy as the early Tandy stuff's reputation was as "TRASH-80s", it's no surprise that OP's dad loved them. Back in the day, Tandy machines really did deliver value for money. Of course once you popped them open, their manufacturing-design issues would be revealed. There were bodgewires all over the place because of last-minute issues found after the PCBs had gone to manufacturing. And the ones with built-in CRTs had issues wherein the cathode of the CRT was DANGEROUSLY CLOSE to the main PCB. If you weren't careful cracking that puppy open -- zappo! Fried motherboard, possibly fried you!

For these reasons, and possibly also to hide their shame and embarrassment and make extra scratch on service calls, Tandy equipment often had one of those "Warranty void if seal is broken" stickers on it, which are now illegal to enforce even in the USA. They also used to seal the screwholes with Glyptal to prevent unauthorized tinkering; this so incensed my dad that he called all the way up the chain to the president of Tandy Corp. to make them stop (and also drilled through the Glyptal to get at the screws).

But when it worked, it was solid, not to mention cheap. Great stuff for hobbyists and even small businesses.

ansible · a year ago

This is an interesting and fun project, I was glad to read about it.

It was a bit of a bold move to base this on a Model I. That system had an unreliable expansion interface, limited memory options, and emitted a lot of EM interference.