gh02t

75 ms·

811.
by gh02t 9y ago
They have a pretty stable niche in high volume signal processing because they can deliver deterministic real time processing for data. You'll find an FPGA in most oscilloscopes, digitizers and the like. A GPU would be not be well suite
812.
by gh02t 9y ago
You can already get 'em and the price isn't completely out of reach for a hobbyist: https://www.sparkfun.com/products/14342 I had actually just discovered those recently and with 0.2mm repeatability my first
813.
by gh02t 9y ago
There are hobbyists who might want to, I don't dispute that, but what I'm saying is there aren't enough . You need a pretty big critical mass before the economics start to make sense and something like what happened with 3D
814.
by gh02t 9y ago
No, you have to cut a stencil and apply paste before you put it in the pick-and-place.
815.
by gh02t 9y ago
Yeah but I think there is a fundamental difference here. A 3D printer enables you to do things you can't do otherwise (fabricate custom mechanical parts). A pick-and-place enables you to do stuff you can already do with tweezers except
816.
by gh02t 9y ago
You're not gonna be able to pick-and-place anything with hundreds/thousands of parts at a hobby price point. Those kinds of machines are massive by necessity and hugely complex; I just can't imagine it happening for the very
817.
by gh02t 9y ago
PnP doesn't make sense for a hobbyist though, that's the problem. A PnP is a tool for someone making a hundred or more of the exact same design, not something you usually do unless you're selling something. It's not wort
818.
by gh02t 9y ago
Twiddle, AKA coordinate ascent, definitely works in practice. It's basically the same process a human uses to tune PID parameters, cyclically tune one parameter at a time until you're performance is good enough. It's closely
819.
by gh02t 9y ago
I love that channel! And I understand completely, it's easy for tools like that to sit collecting dust unless you have the right combination of skills and interests. I usually tell people that a 3D printer is not at all worth it unless
820.
by gh02t 9y ago
3D printed cases can look good with a bit of practice and the cost of a decent 3D printer is much lower than a laser cutter that can cut acrylic. Probably the most popular one with budger makers right now is the CR-10, which is big enough f
821.
by gh02t 9y ago
Also cool. I opted for GPS because I had a spare Pi and you can get dubious but perfectly adequate GPS modules for $3 off of Aliexpress, it's kind of an impulse buy. I also picked up a MAX7219-based LED display for another $2, so it&#x
822.
by gh02t 9y ago
System time gets set either from the GPS signal if not connected to the network or another NTP server if you are at boot. The satellite gives you a coarse time directly (accurate to milliseconds I think), plus a high precision frequency ref
823.
by gh02t 9y ago
I'm currently building one for fun using a Raspberry Pi and a cheap GPS module from Aliexpress. I don't think a lot of hobbyists do it, but it's pretty common for stuff like datacenters to have their own local GPS disciplined
824.
by gh02t 9y ago
I think the argument is that AMD's implementation is similar in complexity and any sufficiently complex implementation will likely have vulnerabilities, sloppy or not.
825.
by gh02t 9y ago
I mean it's not like it's one in a millennia. Archimedes, Cauchy, Galileo, Babbage, Lovelace, Maxwell, Ampere, Lord Kelvin, Navier... those are just the famous ones off the top of my head.
826.
by gh02t 9y ago
That's not quite true, almost any respectable math program is gonna include a significant amount of material on finite set theory and discrete algebra (though maybe not in the non math major escalator, that usually stops at differentia
827.
by gh02t 9y ago
Yep, Hanford Site was/is an epic disaster. The correct response is reprocessing. Most of the "waste" generated by power reactors is actually still usable as fuel. It also eliminates the really long-lived stuff, so that the sm
828.
by gh02t 9y ago
It's not really a concern. U235 is basically radiologically inert, it doesn't become significantly radioactive until after the reactor has been running for a while. The concern with fission reactors in space is for stuff that migh
829.
by gh02t 9y ago
Ah, ok. I'm pretty sure I've had it happen with more than just contractions though, like with common phrases. The real problem is that it's really hard to undo the correction. I need to start keeping better track of it so I c
830.
by gh02t 9y ago
What the parent comment is talking about is something more extreme and I've noticed it too. It sometimes changes prior words that are valid after you have moved on to the next word. It's not correcting the word you just typed,
831.
by gh02t 9y ago
Chaos theory doesn't imply randomness, it implies unpredictability. Hyper sensitivity to initial conditions means you can't reliably predict the exact outcome, because it's impossible to observe all the relevant initial condi
832.
by gh02t 9y ago
Sure. Nuclear security is a broad area and it can mean a whole lot of things, but mostly it means more to do with non-proliferation and defense against and response to nuclear threats on a technical level and less the mechanics of training
833.
by gh02t 9y ago
If possible move upwind, as far away from any military or industrial targets as possible. Otherwise, shelter underground or in a concrete/stone building. Put on the best dust/gas mask you can find. Put on heavy or waterproof cloth
834.
by gh02t 9y ago
Not quite, at least in my case. Like I said I do think that people mostly are the sum of their parts. It's just that for me, the possibility that anyone can escape their circumstances makes it irrational (as well as immoral) to totally
835.
by gh02t 9y ago
It's more that I'm saying humans have agency (in the philosophical meaning of the word). You can't know with 100% certainty what a person will do, even with perfect knowledge of everything about them. You can predict with ver
836.
by gh02t 9y ago
They don't determine everything is my point. Environment paired with genetics has a strong (sometimes overwhelming) influence on the decisions you make for sure, and they make many decisions harder or easier, but you still maintain t
837.
by gh02t 9y ago
Eh, I don't know if you want to take it quite that far. Your genes might predispose you towards one path or another, but there is still free will involved. Complex sociological events like someone committing a criminal act can't j
838.
by gh02t 9y ago
It's not an argument of rationality, it's about fairness to the larger market and how easily insiders can abuse access to information. The price of a stock is supposed to reflect its value, if you act on insider information and se
839.
by gh02t 9y ago
It's not a precise standard, the exact boundaries of "creativity" would be left up to a judge to decide in a case where it was truly ambiguous. I'm pretty sure that this specific case would count as a minor modification
840.
by gh02t 9y ago
Maybe even more fun is to build one yourself. They are a great introduction to CNC hardware without some of the added mechanical complexity involved with something like a router or mill. The parts are fairly cheap because they don't ha

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