cnvogel

14 ms·

61.
by cnvogel 10y ago
A standalone product can have its advantages if it's designed with care to the specific task of timekeeping (which most other PCs or embedded boards aren't). This product (from looking at the schematics) has a true voltage control
62.
by cnvogel 10y ago
All the contemporary CPUs you find on affordable boards have only 3.3V (maybe some even 1.8V, at least on a subset of pounds) I/O. Not directly connect able to chips as used in the Alto. There are still a few CPLD/FPGA available w
63.
by cnvogel 10y ago
Here's a recommendation if you are interested in understanding the basics of turbine engines: https://www.youtube.com/user/AgentJayZ This guy, calling himself AgentJayZ, is a technician (not a designer) working on
64.
by cnvogel 10y ago
> In my experience, the worst problems with Word come out of company templates. Oh, yes, brother. Especially as they tend to be created by the people with the least experience in using (even modestly) advanced features.
65.
by cnvogel 10y ago
> you can use a non-addressable storage device (like SPI flash) and it'll demand load it via a cache? That's amazing. This is already done like this on the esp8266.
66.
by cnvogel 10y ago
There's a brilliant talk, given in 2009 at HOPE09, NYC titled "Indistinguishable From Magic: Manufacturing Modern Computer Chips". At roughly 36 minutes, there's a cross-section of a (in 2009) modern chip. The topmost la
67.
by cnvogel 10y ago
http://bikeshed.com/ - with random colors on every reload. Quote: "(If you don't like the way we painted this bikeshed, try bikeshedding.io, or the minimalist shed.bike. Or set up your own? That's the spirit!
68.
by cnvogel 10y ago
So, structure your project that you can either use the internal PRU or an external motor controller… I don't see the big problem. I'd say that most embedded related projects will have to deal with newer revisions of their hardware
69.
by cnvogel 10y ago
2.) Baby diapers?
70.
by cnvogel 10y ago
Number of supported architectures. You'd be surprised for how many chips gcc (or any free compiler) just isn't available. But every chip vendor will sell you a commercial bundle of IDE (most often eclipse...) + commercial compil
71.
by cnvogel 10y ago
> Are key fobs are the canary in the coal mine of RF interference? If key fobs use receivers similar to the popular and dirt cheap "433 MHz RF Modules (ideal for Arduino)..." sold on eBay for <1$/piece: these are very,
72.
by cnvogel 10y ago
mmap'ing /dev/mem and directly poking at registers is fine as long as you know what you are doing and one of the best ways to explore and play with something not yet "properly" supported... ;-) But of course for thi
73.
by cnvogel 10y ago
> Large automotive companies have built huge systems on top of QNX > messages, creating large libraries used by their applications. > They would like to be able to use those libraries > on Linux, but often do
74.
by cnvogel 10y ago
Funny, if I search at work (using Chrome on Windows) for "Stopwatch" on google, I get the stopwatch "app". [I know, because I use is very often] Now, at home, when logged in chrome with my google account, I get... search
75.
by cnvogel 10y ago
A planet the size of the earth at the distance of proxima centauri is about 6.582⋅10^-5 arcseconds wide (a 20'000th of an arcsecond) angle(in degrees) = size / distance / pi ⋅ 180°, take times 3600 for arc seconds https:&#x2
76.
by cnvogel 10y ago
"ASK" is amplitude shift keying (shifting/changing between two amplitudes). In cheap transmitters (like the ones on keyfobs) one of the amplitudes commonly is "on", the other "off". This is morse, literall
77.
by cnvogel 10y ago
It would be very hard to get several mA of current through your body from only 50V. That's why up to 50V is generally consisted safe low voltage which is not harmful to touch.
78.
by cnvogel 10y ago
It should just return a precision estimate along with the data. Here's what the ancient (from january 1996) standard for "location" records in the DNS specifies, which in my view is very sensible: https://tools.iet
79.
by cnvogel 10y ago
Certainly it would not affect “Apple Pay” (or however it's called) technically. But it would dilute/weaken the statement that “paying with your iPhone is secure”. So I can understand that Apple may want to limit payment systems on
80.
by cnvogel 10y ago
To flip bits, you'd generally want to use radiation with a high local energy deposition such as alpha particles or heavy ions. With typical photon radiation (X-Rays or gammas from radioactive decay) you'll mostly just degrade the
81.
by cnvogel 10y ago
For sure they will have used this (and just not have drawn it in the simplified diagram) as RS232 receivers would be very bad at pulling down the line, even to 0V. I cannot believe that this would have worked, even at slower baudrates, with
82.
by cnvogel 10y ago
There will be some kind of current into the "Ground" terminal on the output (i.e. your computer case) for most small switching power supplies (two-prong without separate protective earth pin). This current is caused by the "Y
83.
by cnvogel 10y ago
The term "load inbalance" is most commonly used in three phase systems where ideally the currents on all three phase/outer/hot conductors should add to zero, having no current on the neutral conductor. Having significant
84.
by cnvogel 10y ago
All switching power supplies (hence the name) are driven by either full-on or full-off ("switching") transistors. A "flyback" topology is only one of many possible ways to build a switching power supply, but as it's
85.
by cnvogel 10y ago
SLIP, being just a simple encapsulation for IP packets, might even work on this shared serial bus. Provided that some sort of collision detection would be implemented, so not to waste too much time transmitting corrupted packets.
86.
by cnvogel 10y ago
There are "charging only cables" available that basically do the same stuff: They have the data-pins bridged in some strange way to persuade the phone and charger to consume/provide maximum charge current. e.g. https:/&
87.
by cnvogel 10y ago
Irradiation using the gamma radiation emitted from the decay of 60-Co isotopes is still a standard method for e.g. sterilizing medical implants. https://en.wikipedia.org/wiki/Cobalt-60 I've been to such facilities
88.
by cnvogel 10y ago
Yes, but this particular CPU/SoC has a parallel bus with the NAND flash connected to it. Which would be the more traditional way to connect an FPGA. For a recent example: The TI Sitara am57xx has 8 individual chip-selects on its "
89.
by cnvogel 10y ago
HFT trading is so obviously time critical that I would be very , very surprised if time synchronization to the few ns level (e.g. GPS steered Rubidiums, available for a few $1000 per Rack/Network) wouldn't be standard feature o
90.
by cnvogel 10y ago
Inside one of my Focusrite audio interfaces, the internal headphone-amp, and wiring to the headphone connector, is labeled "cans" ;-).

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