chrisdalke

7 ms·

31.
by chrisdalke 3y ago
Autonomous exploration & utilization of the world’s oceans
32.
by chrisdalke 3y ago
If you do find yourself in a situation where you are forced to ride in a billionaire's submarine, just make sure it's the billionaire who is fanatically obsessed with deep sea exploration... https://en.wikipedia.org&#x2
33.
Autonomy for Every Mission [video](youtube.com)
2 points by chrisdalke 3y ago|0 comments
34.
by chrisdalke 3y ago
Several different implementations exist, MQTT is a very lightweight protocol so this is very possible. https://github.com/hsaturn/TinyMqtt https://mongoose.ws/
35.
by chrisdalke 3y ago
many INS packages also include a DVL (Doppler velocity log) which measures speed over ground if you’re in range of the bottom.
36.
by chrisdalke 3y ago
I do the same thing with a shortcut of Triple Click side button -> Color Filters. You can set this up in Accessibility and it will let you tint your phone to be nearly 100% red pixels.
37.
by chrisdalke 3y ago
This depends on your goal: Are you trying to build + finish a project, or learn a new skill? I like to separate these goals, or otherwise try to scope projects very narrowly. For the former, I tend to reach for the tech stack that I've
38.
by chrisdalke 3y ago
Nice graphics, pretty smooth, biggest suggestion: Needs way more driftiness -- Right now it feels like the boat is "on rails" in that it follows the steering pretty closely. You should try tweaking the physics so the boat retains
39.
by chrisdalke 3y ago
It's still got a small but vibrant community in the community-run servers (not accessed through matchmaking). These are typically hand-moderated.
40.
by chrisdalke 4y ago
Not just in a linear sequence, but it should have some concept of recursion -- starting with very high-level tasking and calling into more and more specific prompts, only returning the summary of low-level tasking.
41.
by chrisdalke 4y ago
He seemed to not react too much to the smell. With all the other crazy stuff he does, he must be seriously desensitized to strong smells if that’s even possible…
42.
by chrisdalke 4y ago
I did not suggest that anyone should DIY their IoT hardware. My point is I don’t find utility in shaming users for buying cheap cloud-based products - the average user doesn’t care or know about the tech choices, they just want to be able t
43.
by chrisdalke 4y ago
This feels like a very tech-centric perspective. I agree with you, if you restrict this to the very IT-savvy group, but this shifts the blame away from companies’ bad design/behavior. Most people have no understanding of the difference
44.
by chrisdalke 4y ago
A short story that I just read and found very timely again with the advent of LLMs. "In the near future from a 1950’s perspective, the first space station, in orbit around the Earth, gets knocked out of orbit due to pilot miscalculatio
45.
Human Error by Raymond F. Jones (1956)(gutenberg.org)
2 points by chrisdalke 4y ago|1 comments
46.
by chrisdalke 4y ago
I use a fanny-pack style autoinflating PFD which actually comes with a ring to connect the lanyard to. Definitely agreed you need both.
47.
by chrisdalke 4y ago
Amazing story and the pilot of that boat is lucky to be alive. I think larger center consoles should ship standard with a wireless safety lanyard instead of a wired one, because very few people seem to actually use the wired lanyard because
48.
by chrisdalke 4y ago
My philosophy is keeping the CI/CD workflow definition as simple as possible, and passing off the task itself into a shell or python script. The only thing I typically perform in a task definition is secret management, tagging & up
49.
by chrisdalke 4y ago
Most MQTT implementations do support MQTT-over-Websocket. I use it extensively at work and it's been fairly reliable!
50.
by chrisdalke 4y ago
Thanks for the corrections: So the bubbles are not a vacuum but low-pressure vapor and cavitation is the name for the collapse, not the bubble itself. And this can only happen in liquids where there is a potential phase transition. I'v
51.
by chrisdalke 4y ago
Related thread from a few months ago discussed the Sharrow propeller mentioned in this article, which applies the same concept to boats: https://news.ycombinator.com/item?id=33949895 The difference in geometry for air vs. w
52.
by chrisdalke 4y ago
Makani (Acquired by Google and shut down) built large airplane/kites which transmitted wind power to the ground via a tether. The engineering challenges were... intense. This was all documented extensively and this documentary summariz
53.
by chrisdalke 4y ago
Off topic, but wow, your generative art is incredible! I was already impressed and then saw that you're actually physically plotting everything which is next level. Love the fusion of art/math/robotics.
54.
by chrisdalke 4y ago
Outer Wilds is a profound, thought-provoking work of art. A tip anyone encountering this comment: If you like Sci-fi, story-based, exploration games -- Just buy it. Just go play it. Don't read a single review. Don't look at YouTub
55.
by chrisdalke 4y ago
Unsure if this would scale up but as others have mentioned for large ships the operation is very sensitive to cost. Fuel efficiency is weighed against current fuel cost, cost to design a technology into a new ship or retrofit, maintenance,
56.
by chrisdalke 4y ago
I think it's a pretty cool design but repairability does seem like a concern -- Normally you'd take a stainless prop to a shop and they'd just weld + grind any small damage but that seems more difficult with the geometry of t
57.
by chrisdalke 4y ago
Anecdotally (I'm familiar with the marine industry) they seem to be gaining popularity with the luxury center-console market, half as a fuel-saving metric but mostly because they're a talking point at the marina. In recreational m
58.
by chrisdalke 4y ago
Timescale is built around a concept they call "hypertables", which automatically partition data into a set of smaller tables segmented by time range. Timescale exposes the time-series data as if it was a single table, but behind t
59.
by chrisdalke 4y ago
Similar dynamic slope soaring has been researched and demonstrated to dramatic affect by Spencer Lisenby and others: https://www.youtube.com/watch?v=nv7-YM4wno8&t=3s . In the video I linked he describes how they engineer
60.
by chrisdalke 4y ago
3D printers have exited the hype cycle and now are in two categories: People who bought them as a cool consumer gadget similar to VR. These printers are gathering dust because there ultimately isn’t that much interesting plastic junk to pri

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