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KerrickStaley commented on Ask HN: What Are You Working On? (December 2025)    · Posted by u/david927
KerrickStaley · 14 days ago
I'm experimenting to see if frontier LLMs can do practical CAD modeling. I'm starting with a single task: designing a wall mount for my bike pump in OpenSCAD or CadQuery (two code-based CAD systems).

None of the frontier LLMs (Gemini, ChatGPT, Claude) produce usable designs when just prompted with some photos of the pump and a written description of the mount. I'm now building a simulator in Mujoco that the LLMs can use to test and iterate on their designs to see if they can do better in this setting.

I'm hoping to make an interesting blog post of it and maybe end up with a usable wall mount design.

KerrickStaley commented on Getting a Gemini API key is an exercise in frustration   ankursethi.com/blog/gemin... · Posted by u/speckx
KerrickStaley · 18 days ago
In my personal experience, OpenRouter makes it easy to call Gemini 3 Pro Preview and other frontier LLMs with very little setup. It’s great for projects where you want to compare different LLMs or have the flexibility to switch. It charges a 5.5% fee on top of the base API price so at scale you would want to switch to directly calling the provider.
KerrickStaley commented on I bought a £16 smartwatch just because it used USB-C   shkspr.mobi/blog/2025/08/... · Posted by u/blenderob
ackfoobar · 5 months ago
> The watch is simply missing the two 5.1k resistors connecting the CC1 and CC2 pins of the USB-C connector to ground that are required to indicate to whatever is plugged in that it wants 5v power.

This is so annoying. Back when USB-C was less prevalent, I bought a pair of wireless earbuds over another for the same reason as the title - because it used USB-C. But then I cannot charge it with my macbook, unless I add a USB-C to USB-A adapter.

KerrickStaley · 5 months ago
This problem seems prevalent on cheaper devices. When I buy a device and discover it has this problem I always return it. I've seen it on the Hypervolt Go 2 (which I returned and replaced with a Theragun Mini) and on the Hitachi Magic Wand Micro (which I replaced with a Dame Dip).

Like the post mentions, I think this happens because the devices are missing two resistors that are needed to indicate, when connected via a USB-C to USB-C cable to a charging brick, that the device wants 5V power. Resistors are cheap and I think the only reason they get dropped is carelessness.

The whole point of USB-C is that you can charge any device with any power supply.

KerrickStaley commented on Some terminal frustrations   jvns.ca/blog/2025/02/05/s... · Posted by u/aragilar
KerrickStaley · a year ago
> Half of the comments on keyboard shortcuts were about how on Linux/Windows, the keyboard shortcut to copy/paste in the terminal is different from in the rest of the OS.

On Linux I rebind SIGINT to Ctrl+Shift+C and similarly Ctrl+V -> Ctrl+Shift+V. This has never caused problems, except when a friend/coworker is trying to use my machine.

GNOME Terminal makes this easy; if you map Ctrl+C to copy, it will automatically remap SIGINT to Ctrl+Shift+C.

KerrickStaley commented on Roll-Invert-Unroll: An easier way to replace a duvet cover   danverbraganza.com/writin... · Posted by u/nvader
bhaney · 2 years ago
I wasn't even aware duvets were still used outside of hotels. You guys don't just have sheets and a regular blanket on your bed? Is it a cultural/regional thing? They seem very annoying to deal with and I've never found them to be particularly comfortable, so I'm surprised so many people here seem to use them.
KerrickStaley · 2 years ago
None of the apartments I've lived in for the past few years have had a washer large enough to wash a king-sized comforter, so I use a duvet instead.
KerrickStaley commented on A walk through Chicago Pedway (2017)   chicago.curbed.com/2017/9... · Posted by u/wglb
KerrickStaley · 2 years ago
A few other cities I've been to also have extensive pedestrian subway systems / skyway systems:

Rochester MN: https://www.experiencerochestermn.com/planning-tools/getting...

Taipei Taiwan: https://pqvst.com/2023/05/28/taipei-underground/

New York NY near the World Trade Center: (can't find an up-to-date map or article)

Hong Kong near Central area: https://www.theguardian.com/artanddesign/architecture-design...

They are great as a way to avoid extreme weather on the surface (cold in Rochester's and New York's case, hot in Taipei's and Hong Kong's case) and car traffic.

Hong Kong takes things a step further in that it's actually hard to get around at ground level. Many streets don't have pedestrian crossings and there are barriers to prevent jaywalking. I'm not a fan honestly.

KerrickStaley commented on Apple announces changes to iOS, Safari, and the App Store in the European Union   apple.com/newsroom/2024/0... · Posted by u/colinhb
mjburgess · 2 years ago
Well it's per install. And knowing apple, they might even count an update as an install.

I suspect there's a DMA v2 coming, and it's going to be much much harder on them with this behaviour.

EDIT: https://developer.apple.com/support/fee-calculator-for-apps-...

2,000,000 installs is a minimum of $45k in fees, even with $0 USD revenue

this seems obscene

KerrickStaley · 2 years ago
It says "each first annual install per year over a 1 million threshold" which I think means as long as you're updating your app at least once a year, you pay for each device your app is installed on (minus 1 million, which is a rounding error for the biggest apps).
KerrickStaley commented on Apple announces changes to iOS, Safari, and the App Store in the European Union   apple.com/newsroom/2024/0... · Posted by u/colinhb
KerrickStaley · 2 years ago
A significant part of this announcement seems to be the €0.50 "Core Technology Fee" that Apple will now charge for "each first annual install per year over a 1 million threshold".

I think this essentially means that large developers pay €0.50 * (num apps they publish) * (num devices each app is installed on) per year. There are 2 billion active iOS devices [1], so I think that for the biggest apps like YouTube the fees could be in the hundreds of million USD per year.

4 of the top 5 most downloaded apps of all time [2] are published by Meta (Facebook, Messenger, Instagram, WhatsApp), and I think they will pay this fee for each app?

[1] https://www.macrumors.com/2023/02/02/apple-two-billion-activ...

[2] https://en.wikipedia.org/wiki/App_Store_(Apple)#Of_all_time

u/KerrickStaley

KarmaCake day1912September 7, 2012
About
I live in Brooklyn, NY and work as a software developer at Anthropic. https://www.kerrickstaley.com/about
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