Hacker News: hatsunearu

New comment by hatsunearu in "Valve releases Steam Controller CAD files under Creative Commons license"

hatsunearu — Wed, 06 May 2026 17:11:07 +0000

Valve wasn't always like this. They were infamous for never allowing refunds, but due to EU regulations they just did a complete about face and has one of the friendliest refund policies in the ESD business. Probably just behind Costco or something.

New comment by hatsunearu in "Ti-84 Evo"

hatsunearu — Mon, 04 May 2026 17:20:23 +0000

Forgot what menu-3-1 is lol, I would use solve() all the time though. Got super good at typing that with my thumbs really fast

New comment by hatsunearu in "Ti-84 Evo"

hatsunearu — Fri, 01 May 2026 21:18:53 +0000

Wow, they used to be allowed back when I was in high school. It came in super clutch for SAT but much more importantly AP. Our school mandated the original CS CAS and drilled us on how to use it effectively and I got good mileage out of it through high school testing and college.

I lost it at some point and got the version 2 and I would occasionally use it for work. I wish it had USB-C because who has a mini-B cable for charging these days

New comment by hatsunearu in "Running Tesla Model 3's computer on my desk using parts from crashed cars"

hatsunearu — Thu, 26 Mar 2026 20:19:39 +0000

Yeah, this is normal. When the battery suddenly disconnects (for example of the lugs pop off) the alternator's momentum will send a massive, long-standing transient on the bus up to 100V. This is called a load dump.

New comment by hatsunearu in "Meta and YouTube Found Negligent in Landmark Social Media Addiction Case"

hatsunearu — Wed, 25 Mar 2026 18:27:22 +0000

I feel like discord is kind of like this used correctly, but with the recent drama and such it feels terrible

New comment by hatsunearu in "A Cozy Mk IV light aircraft crashed after 3D-printed part was weakened by heat"

hatsunearu — Thu, 04 Dec 2025 21:28:43 +0000

Isn't Tg a poorly defined metric? It seems like thermoplastics will lose their strength as temperature goes up and there's no abrupt transition where there's a near step-change in behavior

New comment by hatsunearu in "A Cozy Mk IV light aircraft crashed after 3D-printed part was weakened by heat"

hatsunearu — Thu, 04 Dec 2025 21:24:19 +0000

Apparently they thought it's ok because the published glass transition temp is higher than the epoxy used for fiberglass construction

New comment by hatsunearu in "A Cozy Mk IV light aircraft crashed after 3D-printed part was weakened by heat"

hatsunearu — Thu, 04 Dec 2025 21:17:45 +0000

Is this a Part 103 Ultralight?

Also it's insane that they used a bolted joint with plastics on a critical place, the plastic will creep under the clamp load and will lose clamp force.

New comment by hatsunearu in "IRS halts Direct File and points to other free services"

hatsunearu — Fri, 07 Nov 2025 02:38:50 +0000

I used cashapp's free tax software and it was pretty good. Similar quality to TurboTax but free. I had regular W-2 income, a whole lot of 1040 forms, and an S-1 form from some ETFs.

New comment by hatsunearu in "Meta Ray-Ban Display"

hatsunearu — Thu, 18 Sep 2025 16:45:09 +0000

Well for cars, you do need to be on the active lookout for pedestrians, other cars, etc, but for planes generally you are mostly looking at instruments. You only really look outside if you expect something is coming, and the HUD isn't really a distraction there.

New comment by hatsunearu in "Nintendo Switch 2 Dock USB-C Compatibility"

hatsunearu — Mon, 01 Sep 2025 08:23:19 +0000

USB-C was really really really rough in the early years. The switch 1 was one of the first products to come out with USB-C IIRC.

New comment by hatsunearu in "Xfinity using WiFi signals in your house to detect motion"

hatsunearu — Tue, 01 Jul 2025 03:54:42 +0000

I think they get refurbished and sent back to other customers.

New comment by hatsunearu in "Is gravity just entropy rising? Long-shot idea gets another look"

hatsunearu — Mon, 16 Jun 2025 22:27:14 +0000

My interpretation of entropy is that if you have X states that are equally probable, but not all states are distinct from each other in some sense, then the next state will likely be one where the states satisfying that condition is most numerous.

For example, if you flip N coins, there are 2^N states available once the flip is done. Each outcome has an 1/2^N probability of outcome. There's only one state where all of the states show all heads. While there's only one state where coins numbers 1-N/2 are heads, and N/2-N are tails, so that particular outcome is 1/2^N, if all we care is the macroscopic behavior of "how many heads did we get"--we'll see that we got "roughly" N/2 heads especially as N gets larger.

Entropy is simply saying there's a tendency towards these macroscopically likely groups of states.

New comment by hatsunearu in "Prohibition and ice cream in the US Navy"

hatsunearu — Wed, 28 May 2025 20:38:44 +0000

is it 2 beers per day?

New comment by hatsunearu in "Chomsky on what ChatGPT is good for (2023)"

hatsunearu — Sun, 25 May 2025 18:03:55 +0000

That is unbelievable that someone could glaze someone this hard

New comment by hatsunearu in "InventWood is about to mass-produce wood that's stronger than steel"

hatsunearu — Mon, 19 May 2025 16:37:53 +0000

https://www.youtube.com/watch?v=CglNRNrMFGM

Here's a NileRed video replicating the process.

New comment by hatsunearu in "AniSora: Open-source anime video generation model"

hatsunearu — Sun, 18 May 2025 03:00:49 +0000

So was this trained on existing anime? Ain't no way the corpus was licensed legally.

New comment by hatsunearu in "What is HDR, anyway?"

hatsunearu — Wed, 14 May 2025 15:18:41 +0000

Is there any workflow that can output HDR photos (like the real HDR kind, with metadata to tell the display to go into HDR mode) for photos shot with a mirrorless and not an iPhone?

New comment by hatsunearu in "Anime fans stumbled upon a mathematical proof"

hatsunearu — Thu, 06 Mar 2025 23:37:54 +0000

My experience is that 4chan is obscure and annoying enough to browse and participate that it keeps the lowest of low effort posts down. Like if you look at websites that are easy to participate, like Facebook or reddit, you're just gonna see the worst of the worst.

New comment by hatsunearu in "Why Quantum Cryptanalysis is Bollocks [pdf]"

hatsunearu — Tue, 18 Feb 2025 01:25:18 +0000

idk why you're fixated on 100 years, but stuff like nuclear weapons tech is 1940s-1960s technology and that's still classified.