minetest2048

7 ms·

31.
by minetest2048 1y ago
I like my scintillator crystals.. they're purpose built to be very fluorescent
32.
by minetest2048 1y ago
This is embedded C where standard abuse is a thing: https://thephd.dev/conformance-should-mean-something-fputc-a...
33.
by minetest2048 1y ago
Factorio is the only game that I know that have Linux (and Mac) exclusive feature, which is non-blocking saving: https://www.factorio.com/blog/post/fff-408
34.
by minetest2048 1y ago
Its not your normal soda-lime glass, its more of a glass-ceramic material that have very low coefficient of thermal expansion, something like zerodur: https://en.m.wikipedia.org/wiki/Zerodur , which means it can keep i
35.
by minetest2048 1y ago
The space industry people have been saying this since 1997: https://youtu.be/z_aHEit-SqA?si=N6-PtezdsOhsv63O Delta 2 rocket exploded during launch, raining flaming debris everywhere and the announcer says we had an anomaly
36.
by minetest2048 1y ago
Related problem is single-board computers that relies on USB-PD for power. USB-PD sources requires the sink to do power delivery negotiation within 5 seconds, or it will cut its power or do funny things. Because USB-PD negotiation is handle
37.
by minetest2048 1y ago
This also happened in python ecosystem where gevent were messing with numpy because gevent was compiled with -ffast-math, which disables subnormal numbers Blog post: https://moyix.blogspot.com/2022/09/someones-been
38.
by minetest2048 1y ago
> SpaceX plan to turn the internet into an outernet, by routing the majority of data traffic through their Starlink satellites. This should be particularly attractive to global users because a network of interconnected satellites is inhe
39.
by minetest2048 1y ago
Breakthrough Starshot StarChip ( https://en.wikipedia.org/wiki/Breakthrough_Starshot#StarChip ) is the closest thing: > StarChip is the name used by Breakthrough Initiatives for a very small, centimeter-sized, gram-sc
40.
by minetest2048 1y ago
> it's just a tooling issue FPGA toolchains are infamous for one of the worst and cursed toolchains in the world. Where writing tcl scripts to imperatively connects blocks together in a block diagram that will integrate all the veri
41.
by minetest2048 1y ago
> (I ended up writing a bare metal sshd because I couldn't find one that supported no-malloc, no-OS operation) Is there a write up for this? This sounds interesting
42.
by minetest2048 1y ago
Fortunately its not just you, in Julia community there's a thread that discusses why you shouldn't use metaprogramming as a first solution as multiple dispatch and higher order functions are cleaner and faster: https://
43.
by minetest2048 2y ago
What rocket equation cares is reaction mass not energy: ve * ln(m0/mf) where ve is exhaust velocity, m0 is initial total mass, which is dry mass + propellant mass, and mf is dry mass
44.
by minetest2048 2y ago
This should be an international effort, not just US! They will censor out their spy satellites, even if its accidentally taken by a sky survey telescope: https://www.msn.com/en-us/news/technology/when-a-telesc
45.
by minetest2048 2y ago
This: https://compasse.aas.org/aas-releases-a-compasse-led-stateme...
46.
by minetest2048 2y ago
Because their software, sat_id can only search Earth-orbiting satellites: > Payne noted that when the Tesla Roadster was originally launched in 2018, the community caught it and flagged it as an artificial object, and the MPC “correctly
47.
by minetest2048 2y ago
> For shared mutable references across threads I get it for some data race conditions Exactly this: https://discourse.julialang.org/t/package-for-rust-like-borr... > I guess I’ll just add my motivation – I’ve had
48.
by minetest2048 2y ago
Its analog, the RF signal modulates the laser intensity and a photodiode recovers the signal
49.
by minetest2048 2y ago
You worked for Kubos? How is it? We were using KubOS the linux OS for our cubesats when they went bankrupt (?) and got acquired by someone else
50.
by minetest2048 2y ago
> the only methane-based engine that ever reached space. TQ-12 that is used by Zhuque-2 reached orbit first. Of course Raptor is much better, as TQ-12 is a simple gas generator engine
51.
by minetest2048 2y ago
> Who in the US makes surface mount resistors, capacitors, inductors Adding to this point, don't underestimate passive components! For some applications, such as RF, you can't just change inductors with another inductor that ha
52.
by minetest2048 2y ago
In the context of time synchronization, my gut feeling is no, as you can't guarantee that the atomic clocks on other GNSS tick at the same time as GPS. Even if they have the same frequency. I can't find any benchmarks though that
53.
by minetest2048 2y ago
At first I thought you misspelled TDRSS but then I found out that IDRS is a thing: https://www.idrsspace.com/ Its too big and power hungry to fit inside 10x20x30 cm cubesat though :( More reason to go bigger
54.
by minetest2048 2y ago
All ground station as a service are limited by radio licensing, you need to apply for transmit license to the country that the groundstation is located to legally transmit to your cubesat. Its not as easy as spinning up an EC2 instance Some
55.
by minetest2048 2y ago
Any mirrors/archives? DNS not resolving for me EDIT: found one on wayback: https://web.archive.org/web/20241124225457/https://herecomes...
56.
by minetest2048 2y ago
Adding to this: I wish I can just buy a 4G modem for my cubesat and get 24/7 access through Starlink without waiting for my cubesats to be in view of my groundstation...
57.
by minetest2048 2y ago
The thing is that GPS doesn't just do positioning. If we lost GPS then we can just look at road signs (hopefully). GPS also provides time synchronization to a lot of very important telecom infrastructure. To prevent 4G base stations a
58.
by minetest2048 2y ago
This is their definition of “High Risk Application”: any product, device, component, or system which if it fails or is interrupted, may result in loss of life, or other serious or catastrophic personal injury and/or substantial financi
59.
by minetest2048 2y ago
https://chadaustin.me/2024/10/intrusive-linked-list-in-rust/ HN discussion: https://news.ycombinator.com/item?id=41944121 While we at it, someone argued that Zig is nicer than unsafe Rust: h
60.
by minetest2048 2y ago
I don't disagree with this statement, fusion researchers do care about energy loss when they're evaluating fusion reactor feasibility. They talk more about neutron loss, bremsstrahlung radiation and synchrotron radiation instead o

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