Y
HN Search
Hacker News Search
new
|
comments
|
top
|
jobs
buescher
searching PlanetScale…
1.
▲
2.
▲
3.
▲
4.
▲
5.
▲
6.
▲
18 ms
·
301.
▲
by
buescher
2y ago
At that point you're probably blowing up your verification/validation space to where it might be intractable , in both a machine and human sense. People have done research work in formal methods all the way down to the assembly l
302.
▲
by
buescher
2y ago
Not only are most third-party crimp tools kind of marginal, but if you're buying connector kits of Amazon/ebay/Aliexpress etc you're getting knockoffs too, so you have a lot of degrees of quality freedom between your cri
303.
▲
by
buescher
2y ago
> Except I don't think there's any services at that price point for cable harnesses. I don't know of any either, but you can design around ready-made cables. Mouser and Digi-Key carry a pretty big selection.
304.
▲
by
buescher
2y ago
I didn't know about the Cromenco camera but I remember seeing the trick in electronics/robotics books from the seventies. Micron sold a windowed DRAM for that purpose back in the early eighties, and I think a camera too. There w
305.
▲
by
buescher
2y ago
It's really exciting what's going on with things like Tiny Tapeout/Efabless/ChipIgnite and whatever Google is sponsoring - I have a hard time keeping the players straight - as far as education and ambitious hobbyist use.
306.
▲
by
buescher
2y ago
It's sort of ironic that spreadsheets were both the original killer app for personal computers and the major replacement for BASIC for small business applications - which we still strongly associate with early personal/home comput
307.
▲
by
buescher
2y ago
It's not bad at all, though the organization is a bit funny. I get the impression of an organization that knows a great deal struggling to get it all down on paper. Specific references to programming languages, tools, RTOS choices, e
308.
▲
by
buescher
2y ago
Well, now you know where they got it from.
309.
▲
by
buescher
2y ago
I think they package many of their chips in Thailand, so that's where those chips ship from. I don't know about these chips in particular.
310.
▲
by
buescher
2y ago
It’s historically rooted in Protestant anti-Catholicism, and the most popular version in America of it comes from Washington Irving.
311.
▲
by
buescher
2y ago
That's very cool. Thanks. At first I thought they were just press-fit pins (see https://www.te.com/content/dam/te-com/documents/automotive/g... ) but they are not! More here: https://
312.
▲
by
buescher
2y ago
Micrium (uC/os-ii, uC/os-iii) is open source now. Best dead-trees book for an RTOS. I haven't shipped anything on it, so I have no other opinion. https://github.com/weston-embedded/uC-OS3
313.
▲
by
buescher
2y ago
Older usage appears primarily to be as a nickname for Norman.
314.
▲
by
buescher
2y ago
I wonder how this performs compared to the "voice recognition" VCP200 chip sold by Radio Shack in the eighties (maybe early nineties?). https://21stdigitalhome.blogspot.com/2013/06/vcp200-voice-re...
315.
▲
by
buescher
2y ago
A country of two million people managed to plant six million trees in one day in 2008 https://www.reuters.com/article/idUSTRE4AI49U/
316.
▲
by
buescher
2y ago
That's almost certainly an achromat unless you got a screaming deal I want to know about. It's not in the same league optically as the Canon lens, which is more like an apochromat, even though you'd probably be disappointed
317.
▲
by
buescher
2y ago
It's more of a "that they could do it at all" sort of feat. They're coming in somewhat cheaper (probably) and at lower project risk by using off the shelf professional camera lenses than by having tubes made for the pur
318.
▲
by
buescher
2y ago
The point is it's not that inexpensive for the optics. I've worked in an interferometry lab where we used high-volume photographic lenses where we could, and yeah, they were probably an order of magnitude less expensive than s
319.
▲
by
buescher
2y ago
Not that inexpensive - that's a $12000 lens with a nearly 6" aperture. The telescope itself is a fairly specialized instrument. It's more like a redundant array of very fast (for a telescope) lenses. From the paper: "
320.
▲
by
buescher
2y ago
in BASIC and floating point, no less.
321.
▲
by
buescher
2y ago
A tree visualization like this one would be great as a complement to tabs in web browsing, especially on a monster display.
322.
▲
by
buescher
2y ago
The PUFF microwave simulator is a favorite of mine and quick enough for what it is. Not a modern UX flow though. https://www.pa3fwm.nl/software/puff/
323.
▲
by
buescher
2y ago
Good catch. You're right about the antenna voltage if it's system power. But it's not all that clear in the article either! Here's an example: >Most steerable antennas typically use somewhere between 500 watts and
324.
▲
by
buescher
2y ago
You should show an interview example with engineering questions then. The questions in your example interview are technician-level. Checking a mechanical drawing for consistency is not an engineering task - the job that does that is "
325.
▲
by
buescher
2y ago
That's -1.5 dB. Or about half the voltage at the antenna. RF engineers will do a lot for a solid dB.
326.
▲
by
buescher
2y ago
Looks like a CAD operator's interview, not an engineering interview. I guess the basic DFM question is marginally engineering.
327.
▲
by
buescher
2y ago
Well, yes, but electric motors and drive circuitry are particularly nasty emi sources. One poor-man's susceptibility test is to run a handheld drill motor as close to your circuit board as possible. In an EV, you're driving arou
328.
▲
by
buescher
2y ago
That clarifies some hints I’ve seen. Wow.
329.
▲
by
buescher
2y ago
Stevenson’s Twenty Cases Suggestive of Reincarnation is a really wild book. I haven’t read his subsequent work, but it’s amazing to see that it’s being continued.
330.
▲
by
buescher
2y ago
The rad lab series basically set the program for electrical engineering ever since. I have a couple too. They are also available on archive.org.
More ›