dognotdog

9 ms·

31.
by dognotdog 5y ago
Yes, higher exhaust temperature is not a direct indicator. For the same airflow, higher exhaust temperature suggests more energy being carried away, which can reduce chip temp, all else being the same. If the airflow was reduced, but the he
32.
by dognotdog 5y ago
Why do you think it's impossible? To me, it seems like all effects (eg. mechanical waves) would propagate at much slower speeds than the speed of light. This kind of control system experiencing significant delays and dead-times is not
33.
by dognotdog 5y ago
Framing relationships in this "triangle" is not new. As parent says, reality is a lot more complex, and this kind of frame-of-mind can be very detrimental: https://en.wikipedia.org/wiki/Karpman_drama_triangle
34.
by dognotdog 5y ago
> Yet the harm inflicted on our children by government mandates closing schools isn’t just academic or financial. Love it, the spin in this article is something to behold, including the many references to more articles with half-thruths
35.
by dognotdog 5y ago
That is quite interesting, and makes sense! The spread-spectrum signal is a psuedo-random, but same sequence for all receivers, while the noise varies and should cancel out. Though, if I am not mistaken, the laws of super-sampling hold in t
36.
by dognotdog 5y ago
Ultra-Wideband Spread-Spectrum can be undetectable, as the signal can be well below the noise floor in any given frequency band, and only knowing the right key will allow you to perform a convolution to lift the actual signal above the nois
37.
by dognotdog 5y ago
A game’s animation and other in-game timing functions are very unlikely to be based on wall-time, instead typically relying on monotonic counters that are higher resolution, less overhead, and not potentially adjusted backwards or forwards
38.
by dognotdog 5y ago
> * unit tests are superb documentary as every dev can see how it is used and how it works at runtime. Those unit tests have to be derived from somewhere, though, right? Hopefully, there are requirements docs -- but often those are too h
39.
by dognotdog 5y ago
While a little bit of a rant (though fair, given the underlying frustrations), I do feel like it mirrors a lot of my experience. Customer service is not being optimized, it is being optimized AWAY. Going even further, it seems as if it coul
40.
by dognotdog 5y ago
FWIW, several non-vaccinated acquaintances of mine in different countries have gotten COVID for the 2nd time, though anecdotally somewhat less severe in the second round. Is any data, yet, available about how reduced the contagiousness is f
41.
by dognotdog 5y ago
Yes, usually just clamp the integrator's accumulator value so that when the actuator is outside the linear control regime (eg. maxing out motor current because we're in the end-stop), the output of the controller doesn't cont
42.
by dognotdog 5y ago
"anti-windup" is usually implemented for PID controllers to avoid increasing the I part infinitely, and linear state-space controls do suffer from the same problem in naive implementations.
43.
by dognotdog 5y ago
I'm sure a lot of the MEMS sensors, etc, are indeed on those wafers. A large chunk of that and analog / hybrid circuitry is dominated by structures that don't benefit from super high density processes and large surface area w
44.
Ask HN: As small-fry needing custom PCBs, how to deal with Covid part shortage?
4 points by dognotdog 5y ago|2 comments
45.
by dognotdog 5y ago
Geez, I'll just go and blame the pandemic for a complete loss of sense of time on that! I could've sworn I saw a beta of that just not so recently, but I had no idea it's been mainstream for that long.
46.
by dognotdog 5y ago
There's also https://earthtime.org/explore which is based off the same satellite imagery, but in the browser. And, it has a lot more available data layers with social, economic, and environmental data on a global scale
47.
by dognotdog 6y ago
It looks it’s the “cowling” that was lost, not the protective shroud / containment around the fan (and the rest of the engine) that keeps the fan/compressor/turbine blades from becoming high speed radial projectiles when they
48.
by dognotdog 6y ago
Is there a decent FOSS solver or algorithm for Cornu splines these days? I did write a road digitizing tool for an internal simulation, based on raphlinus's thesis, about 12-13 years ago, but always had trouble with numerical stability
49.
by dognotdog 6y ago
Is this AI, really? And isn't it immaterial if it is in the first place? If it's a dumb algorithm or a smart one (or a random one, at that) locking out people without recourse, the result seems much the same.
50.
by dognotdog 6y ago
Arguably, this has nothing to do with AI, but an imbalance of power. From a business perspective, it makes perfect sense to do whatever is just good enough to turn a profit with minimal effort. As long as there is healthy competition, there
51.
by dognotdog 6y ago
That doesn't seem to bad, all considered. 5% would be the natural number for any one year out of 20, to get to 0.4% from 5% in 20 yrs should be about 8 yrs of mean life per car, assuming exponential decay. I'm fairly sure this tho
52.
by dognotdog 6y ago
This is interesting, 0.4% in numbers or value?
53.
by dognotdog 6y ago
I feel like for any long-running project, that person is at least ME. If I haven't written down some architectural information for complex projects, when I revisit a project after it being dormant for half year, I need to poke around t
54.
by dognotdog 6y ago
> It mostly kicks up in the morning but I have no idea what is causing it to think the air quality is bad. If it's a standard PM sensor, those usually have a high temperature correlation that needs to be compensated for, and turning
55.
by dognotdog 6y ago
USB 2.0 tops out at a theoretical 60MB/s, and in reality it is much slower, far below the read speeds of fast SD cards. I appreciate that it’s good enough under some circumstances, but not always. Certainly not when taking several car
56.
by dognotdog 6y ago
Maybe consider that it’s more nuanced in real life. That $12 card reader, even expensive USB-3 card readers, are often a lot slower than that builtin one. They get lost and broken, not even considering that when you’re on the go, many photo
57.
by dognotdog 6y ago
> correction of my sloppy wrong comments (wrong numbers). It was not completely wrong. Being an employee gives you those benefits (eg you can stretch parental leave to 2yrs with part time work, the minimum vacation is 24 days instead o
58.
by dognotdog 6y ago
Or possibly we never before in history had the wherewithal to be aware of, diagnose, and treat mental health issues to the extent we can today?
59.
by dognotdog 6y ago
I've recently gotten a Philips 558M1RY, after not wanting to get a Smart TV because of UI and privacy issues. It is marketed as a "Console Monitor." I was going to attach a PC to it anyway, as I don't have traditional ca
60.
by dognotdog 6y ago
With the standard practice where a 2nd team gets tasked with reducing code defects in existing code, with their only metric being reducing the number of defects (that the given tools generate), without regard to the quality of the fixes, an

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