cnvogel

11 ms·

31.
by cnvogel 10y ago
> 4K 4096 / 2160 = 1.8962962962962964 What most people call "4k" is 3840:2160 (typical 16:9 = 1.77… aspect ratio). At least that's the amount of pixels in most TVs/Monitors I've seen.
32.
by cnvogel 10y ago
Slides: https://github.com/takeshixx/woolim-tools Blog-Post: https://insinuator.net/2016/12/woolim-lifting-the-fog-on-dpr...
33.
by cnvogel 10y ago
If I remember the talk correctly, then yes. But it was said that there are several distinct firmwares…
34.
by cnvogel 10y ago
GPS is indeed happily unaware of leap seconds, it started counting seconds on January 6th, 1980 (UTC) {1 week is 604800s, weeks count 0..1023, there already was one rollover}. http://imgur.com/a/uq6D0 A few minutes ago
35.
by cnvogel 10y ago
This is not strictly true. You can reproduce a band-limited signal as long as the bandwidth of this signal is smaller than half the sampling frequency. For example, a signal that only has energy in the range of 9MHz to 11MHz has a center
36.
by cnvogel 10y ago
You forgot to quote the funniest part... "This is already logistically a masterpiece," quotes the "Kölner Stadt-Anzeiger" the judge from the process. "You did not have anything else to do this day." The accused
37.
by cnvogel 10y ago
People seem to be under the impression that regulation inevitably means "someone has to review/audit every single change that was made to any aspect of a product". But in practice there can be all kinds of provisions, from th
38.
by cnvogel 10y ago
The full movie can be watched on the website of the BPB[x]: http://www.bpb.de/mediathek/225092/master-of-the-universe I really like the style that the main/only actor/narrator is filmed in an abandoned f
39.
by cnvogel 10y ago
For comparison, this is how FMS (flight management system) updates are done on contemporary aircraft: WiFi from iPhone, USB or SD-Card. https://aerospace.honeywell.com/en/products/cockpit-systems/... From the
40.
by cnvogel 10y ago
> choosing a microcontroller which uses the logic level you need is a perfectly acceptable solution. Absolutely!
41.
by cnvogel 10y ago
Interestingly, by 14 CFR 43.3(k) even the "official" method described in the article is noncompliant, as the device is removed from the aircraft, and put into a docking-station at home, loaded via RS232. I also understand the need
42.
by cnvogel 10y ago
If you go to the effort to make a nice circuit board, and need to interface 3.3v to 5v logic it doesn't really pay off to skimp on, e.g. a proper voltage translator. [e.g. SN74LVC4245] Why? Because it's giving you worse results: S
43.
by cnvogel 10y ago
No, you don't have to switch "Master" and "Device" mode (what does that even mean in PCIe?). You might be surprised to hear that your networking card, the AHCI-SATA interface and even the sound-card soldered onto yo
44.
by cnvogel 10y ago
45° rotation make sense when you want to avoid having half of your traces exit a dense chip towards the board edges, assuming (which often is the case) a rectangular board. I guess in this particular case, the (many, and sensitive to total
45.
by cnvogel 10y ago
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.g... load_elf_binary() maps the executable to memory, and if an elf interpreter (/lib/ld-linux.so) is specified (which it norma
46.
by cnvogel 10y ago
Is it just me, or does $19M sound ridiculously low for building a prototype of a military vessel? Most larger yachts that are built for rich people seems to cost around this ballpark, and for them I would expect that no new technology has t
47.
by cnvogel 10y ago
> But in the future, is it worth assigning the IP to a > foreign holding corporation But this would make the US-American individual coming up with the ideas (the "intellectual property") export it to a foreign nation. Which
48.
by cnvogel 10y ago
The program counter will not typically be compared via JTAG (this would be way too slow) but there will be dedicated registers inside the CPU that are compared against the program counter. For AVR specifically, have a look at e.g. https:&#
49.
by cnvogel 10y ago
…there is ”Micropython“…
50.
by cnvogel 10y ago
But I've seen many old and even ancient computers where only –you guessed it– the (CMOS memory/clock) batteries went bad. Basically all of them go dead after a few decades, exchange them for new ones, and the puppy will boot up ag
51.
by cnvogel 10y ago
Yes, this is stupid. But many voters will be attracted by simplistic statements. And as a factory worker you are likely much more scared of having to leave your job and learn something completely new… compared to, e.g. the random HN reading
52.
by cnvogel 10y ago
Yes, maybe you even burn more fossil fuel because of transmission loss. But one might still gain on better filtering of dust/particulates in the exhaust which is a major problem in German inner cities. (I'm not advocating the use
53.
by cnvogel 10y ago
If you don't know most of the things mentioned, but are interested what all of it means...: I recommend some of the talks of Harald which consist (by neccessity, he's a great speaker) mostly of acronyms, and he's explaining m
54.
by cnvogel 10y ago
It probably could work of one assumes two equally smart devices on both ends, but USB always included shortcuts to allow the cheapest and flimsiest implementation (add a resistor between two pins) by garage shops building Phone chargers for
55.
by cnvogel 10y ago
> I'd bet the Commodore hardware ports are all > available and can be hooked up to emulators just fine. You are aware that the C64 expansion port is actually the 6510-CPUs address and data-bus? To properly emulate this cycle accu
56.
by cnvogel 10y ago
That's a brilliant idea, I almost forgot about this. When I installed networking gear in the 90s, common knowledge/best practice was to always fix duplex/link-speed on fixed installed gear (routers/switches) because they
57.
by cnvogel 10y ago
Probably out of fear that the signals might deteriorate with probes attached. But with a modern-ish logic-analyzer and the ancient original hardware (huge voltage swings, slow clock, very long busses), I doubt that the probes would make a d
58.
by cnvogel 10y ago
So… only speedup the clock while the software under test is sleeping (waiting on a muted, timer,…) . Stealthy software shouldnt have excessive cpu consumption, otherwise people will investigate. It's obviously a cat & mouse game.
59.
by cnvogel 10y ago
There are cases where you absolutely must instantiate something from your vendor's libraries. But inference tristate I/O from a single concurrent statement will be safe (and also the recommended way to handle tristate i/o on
60.
by cnvogel 10y ago
The hardware internally doesn't use tristate signals, but your VHDL compiler should be smart enough to turn... pin <= 'Z' WHEN tristate ELSE '0' WHEN zero ELSE '1'; ...into an instantiation o

More ›