Hacker News: jyxent

New comment by jyxent in "Pebble Index 01 – External memory for your brain"

jyxent — Tue, 09 Dec 2025 20:24:37 +0000

Do you mean that this is technically possible, or that this is a feature that will be supported? I've preordered the Time 2, so having the ability to configure it that way to significantly extend the battery life of the ring could be interesting. On the other hand, using it standalone might be fine for me. I wouldn't really know how fast I might go through the battery without using it for a while.

New comment by jyxent in "Maybe Bluesky has "won""

jyxent — Sat, 16 Nov 2024 00:22:41 +0000

Bluesky has also added 1m new users for each of the past 2 days.

New comment by jyxent in "Show HN: iFixit created a new USB-C, repairable soldering system"

jyxent — Fri, 13 Sep 2024 17:39:24 +0000

It says that lead fumes are unlikely to be generated:

Based on standard soldering iron temperatures of 620°F-700°F and the melting point of lead (621°F), it is unlikely that lead fume will be generated during electronic soldering, unless the solder is heated to lead’s vaporization temperature of 3182°F.

New comment by jyxent in "Show HN: Xcapture-BPF – like Linux top, but with Xray vision"

jyxent — Thu, 04 Jul 2024 01:29:25 +0000

I've been learning BCC / bpftrace recently to debug a memory leak issue on a customer's system, and it has been super useful.

New comment by jyxent in "Determine mesh rotations to minimise overhangs for 3D printing"

jyxent — Thu, 27 Jun 2024 16:56:30 +0000

I think XY actually has better resolution depending on your perspective. I agree that the minimum extrusion is approximately a line width circle. But that circle can move less than the line width for features on larger surfaces. For example, if you emboss something on the side of an object with 0.3mm depth using a 0.4mm nozzle / line-width, it will work fine.

New comment by jyxent in "First 'tooth regrowth medicine' to be tested in Japan from Sept. 2024"

jyxent — Sun, 05 May 2024 16:57:54 +0000

Anybody who lives in a rural area with a well could have higher levels of natural occuring fluoride in their water too.

New comment by jyxent in "The Reddits"

jyxent — Thu, 21 Mar 2024 17:09:20 +0000

How is this Elon-hate? Is a founder someone who founded a company or someone who joined it later? Calling someone not a founder doesn't change their contributions to the company.

New comment by jyxent in "V Language Review (2023)"

jyxent — Sat, 24 Feb 2024 22:00:41 +0000

Not defending them, but that would explain why they thought it was 2 years old.

New comment by jyxent in "V Language Review (2023)"

jyxent — Sat, 24 Feb 2024 21:31:32 +0000

I'm guessing they didn't look at the article and assumed it was the older one. There is a similar one from two years ago: https://mawfig.github.io/2022/06/18/v-lang-in-2022.html

New comment by jyxent in "Ex-Trump fixer Michael Cohen says AI created fake cases in court filing"

jyxent — Tue, 02 Jan 2024 01:51:50 +0000

If it is happening all the time, providers of generative AI should be emphasizing a whole lot more that they can just make up information.

ChatGPT currently has this message in small text below the message prompt, but I'm not sure how long it has been there: "ChatGPT can make mistakes. Consider checking important information."

But I think that message is kind of underplaying it. The fact that it can make mistakes doesn't necessarily mean that the average person will think it is completely making something up.

New comment by jyxent in "Fish shell 3.7.0 released, the last release branch before the full Rust rewrite"

jyxent — Mon, 01 Jan 2024 18:33:04 +0000

And this discussion from November has an update on the progress: https://github.com/fish-shell/fish-shell/discussions/10123

New comment by jyxent in "Blockbuster Alzheimer's paper retracted by former Stanford president"

jyxent — Mon, 01 Jan 2024 04:25:53 +0000

And you downplay evidence of fraud. You mentioned studies where 1/3 to 1/2 of reviewed papers are found to not be replicable and say they get similar but weaker results. This is evidence of p-hacking or data manipulation. You should expect far less papers to not be replicable given proper statistics.

New comment by jyxent in "Blockbuster Alzheimer's paper retracted by former Stanford president"

jyxent — Mon, 01 Jan 2024 01:37:12 +0000

You misunderstand. The issue is that many more papers should be retracted. A paper this major that couldn't be replicated still took another decade to be retracted.

There are many more papers that are less cited that will never get looked at in enough detail to discover fraud.

New comment by jyxent in "Show HN: Hucksh – A shell with a very good memory"

jyxent — Thu, 21 Dec 2023 16:12:51 +0000

You're missing the 'and their output.'

New comment by jyxent in "Show HN: Hucksh – A shell with a very good memory"

jyxent — Thu, 21 Dec 2023 16:11:37 +0000

The licenses for the three libraries / software they mention are MIT or BSD. They don't need to make it open source.

New comment by jyxent in "3D Printer Auto Bed Leveling Mesh Visualizer"

jyxent — Wed, 20 Dec 2023 01:23:09 +0000

Without watching the video referenced in the article, I'm guessing this was based on what they theoretically could do, rather than something that they had actually implemented.

They currently only use the load cells for bed leveling: https://www.youtube.com/watch?v=F7ETSVu04ao&t=940s

I could be wrong, but I would expect that the load cell readings would be far too noisy in order to determine the height of the nozzle while printing. Even if they were accurate, different materials would also behave differently due to different viscosities.

New comment by jyxent in "3D Printer Auto Bed Leveling Mesh Visualizer"

jyxent — Wed, 20 Dec 2023 00:36:08 +0000

I'm not aware of any hotend sensors doing as you describe. The Prusa MK4 only uses it to generate a bed mesh the same as any other bed-leveling sensors. It does not do any live calibration while printing.

New comment by jyxent in "3D Printer Auto Bed Leveling Mesh Visualizer"

jyxent — Wed, 20 Dec 2023 00:04:59 +0000

They measure a series of points to get a bed mesh, the same as other leveling sensors do. You shouldn't need to live-adjust z, because you've measured the bed surface with the nozzle tip.

With a BLTouch, you need to adjust the z-offset, because the nozzle tip and the BLTouch trigger height are not the same. Once that is calibrated, it should continue to work fine as long as the sensor is working properly.

I think it mainly comes down to the accuracy of the sensor. If your sensor gives you a +-0.03mm reading when probing the same spot, then you will have high and low spots in your bed mesh that you can't correct with z-offset.

This could explain your issues with the BLTouch you mentioned in another thread here. I have various brands of knockoff BLTouch sensors, and the worst one had a +-0.02mm range when measuring points, which made it impossible to get a good bed mesh. The one I replaced it with had about a +-0.005mm accuracy, which fixed my issues with the low and high spots.

New comment by jyxent in "3D Printer Auto Bed Leveling Mesh Visualizer"

jyxent — Tue, 19 Dec 2023 23:25:49 +0000

The Bambu Lab CoreXY printers have force sensors in the bed for leveling using the nozzle: https://wiki.bambulab.com/en/x1/maintenance/replace-the-heat...

Vorons also have a nozzle probing design: https://github.com/VoronDesign/Voron-Tap

New comment by jyxent in "OpenAI will crush Sarah Silverman"

jyxent — Mon, 31 Jul 2023 18:51:07 +0000

If they're using pirated books, haven't they already committed copyright infringement by keeping these copies? The model itself might be transformative, but I think that is a separate issue.

If the companies had bought all of the ebooks, then they might be in the clear.