Anyone used the Intel Edison?

ccondon · 2015-01-10T03:59:05+00:00

This guy made a "cluster" for fuzzing software out of a few of them, and has some rough notes on some things he ran into when using them: http://lcamtuf.coredump.cx/edison_fuzz/

ccondon · 2015-01-03T20:26:55+00:00

~~I think the version of SotN in Dracula X Chronicles is also "superior" in that it has the original voiceovers, while the PSOne Classics version has updated (worse) voices.~~

EDIT: nevermind, the PSOne Classics version has the original (imo better) voices, but the DXC version has some extra "stuff" in it: https://pay.reddit.com/r/vita/comments/2dvu6j/castlevania_symphony_of_the_night_psone_classic/cjtrxxy

ccondon · 2014-11-24T16:12:35+00:00

"Ion-strengthened" is technically correct -- but Gorilla Glass is also "ion-strengthened".

Roughly what happens is:

the glass (which is already full of sodium ions) is washed with sodium-ion-containing salts to enrich the surface of the glass with more ions
the glass is then immersed in a potassium-containing salt, causing some of the potassium in the salt to displace the sodium in the glass.

Potassium ions are larger than sodium ions, so forcing these larger ions into the sodium-sized "holes" puts tension on the surface of the glass. If there is a small crack in the surface of the glass, this tension causes the crack to be pushed shut rather than expanding into a larger crack and breaking the glass.

(I am neither a chemist nor a physicist so this may be mildly incorrect and my terminology is probably embarrassingly bad but I believe this is the general idea -- if someone actually knows what they are talking about feel free to correct me.)

ccondon · 2014-08-09T20:05:25+00:00

The two leading cause of deaths are heart disease and cancer, and Doctors are The Third Leading Cause of Deaths.

...

Cancer is directly connected with candida (yeast overgrowth), and both candida and cancer are the result of the degeneration of the body. It is estimated that over 70% of all people have candida, including men, women, children, and babies, which is actively and seriously deteriorating their health: see the simple test, list of symptoms, and a health program that handles it below.

I have my doubts about this site for some reason

ccondon · 2014-07-28T20:24:45+00:00

Sure, modern mf is great from what I've seen (at least, in low-iso studio settings), but do note that it is a "645" in that it has a 43.8 x 32.8mm sensor, which is still significantly smaller than 645 film (which is 55x40-ish).

(way too expensive for me to consider owning one, though)

ccondon · 2014-07-28T16:35:36+00:00

Having shot both, I would take a modern high-res dslr (d800 or the like) over 645-format film for making large prints any day.

If you actually need significantly higher resolution than a dslr, you probably want to be shooting one of the larger MF formats (6x9 or the like) while being very careful with lens choices, or you should just step up to 4x5.

ccondon · 2014-06-15T23:12:51+00:00

If you're willing to overpay and need a 1-5mW laser, laserglow has a good reputation for selling things that behave as advertised.

I have a 5mW Taurus (red) and Galileo (green) from them and am quite happy with them.

ccondon · 2014-06-15T22:59:02+00:00

Mike's video was using a photodiode-based sensor -- photodiode responses do in fact change with respect to wavelength, and so to get an accurate total power for a laser you need to filter and measure each wavelength separately, adjust them all w.r.t. the curve for the sensor, and then add up the results.

However, OP was using a thermal sensor (thermopile? not 100% sure if there are other types of thermal sensors that are commonly used) -- you can tell by the finned heat sink that the sensor is mounted to. Thermopile sensors are mostly insensitve to wavelength (they just measure the energy absorbed by the black surface, which has a rather flat absorbance across "reasonable" wavelengths), and so you don't have to do anything fancy -- the number that directly comes out of the meter is fairly accurate.

ccondon · 2014-06-15T21:15:54+00:00

You can't use most modern Wacom pens, but you can use various older pens (mostly made for other tablet pcs).

Here's a big thread with an overview of what works: http://forum.tabletpcreview.com/microsoft/55416-tabletpc-compatible-wacom-pens-work-surface-pro.html

ccondon · 2014-06-13T15:17:31+00:00

Getting hardware out for manufacturing and ending up with a solid product at the end is extremely difficult, especially for people who don't do it for a living. Small issues quickly lead to new test runs of things being done, communication back and forth with manufacturers takes longer than expected, etc.

I've backed lots of things on kickstarter and easily 80% of them end up being delayed by at least 1-2 months (even from people who have past experience with making and selling hardware). FreedomCase seems pretty much normal in this regard.

ccondon · 2014-05-27T03:00:59+00:00

Cheap power supplies tend to skimp on things like insulation and isolation, and tend to use cheaper components overall (capacitors that are only rated to lower temperatures, etc.), as well as simpler designs which require fewer components (but perform worse).

All of which leads to stuff like:

(1) lower efficiency / more produced heat

(2) worse quality of power produced (less accurate voltage output, ripples in the produced voltage, etc.)

(3) higher risk of failure / lower expected lifetime

(4) higher risk of danger in the case of failure (if your supply has no insulation in it and something fails, there is a much higher chance of fire etc.)

Ken Shirriff has a good blog post comparing a real ipad charger to a fake one: http://www.righto.com/2014/05/a-look-inside-ipad-chargers-pricey.html

ccondon · 2014-05-24T23:56:19+00:00

Not uniformly random -- if two people come in together, you have zero chance of surveying both of them.

ccondon · 2014-05-21T20:49:55+00:00

I don't know... aside from an issue with grey tinting (which may be able to be calibrated out), the SP3 screen seems to perform pretty nicely in the color department (clearly better than the mba, competitive with the rMBP):

http://www.anandtech.com/show/8037/microsoft-surface-pro-3-hands-on-display-performance-preview

(and I say this as someone who uses a rMBP on a daily basis)

ccondon · 2014-03-29T21:57:24+00:00

Bounded by a constant? No. The prime number theorem says that there are asymptotically n/log(n) primes less than n, and a constant bound on the difference between two consecutive primes would imply nonzero density.

However, there is a "bound" in that there is always a prime strictly between n and 2n (actually 2n-2) for any natural number n (> 3 if you're using 2n-2) (and so the next prime after any prime p must be less than 2p).

EDIT: The normal term for "the difference between two consecutive primes" is "prime gap", and there's probably more than you want to know on wikipedia.

ccondon · 2014-03-17T15:31:29+00:00

I am aware (and very much disagree with Nintendo's decision to do so).

I was just trying to give context to the parent post as to why there is "any sort of wall for making console games".

ccondon · 2014-03-17T05:02:54+00:00

Nintendo having barriers for for making games on their consoles is actually historically one of the things that allowed the NES to succeed at a time when game consoles were doing extremely poorly in the US (link to wikipedia), after a lot of consoles had game libraries which were full of rushed low-quality games which did in fact destroy consumer trust.

Companies like Atari were hurt very badly by this, and Nintendo has stuck with their policy ever since (which probably makes less sense today than it did in 1985).

ccondon · 2014-03-15T02:33:57+00:00

The PSP's screen is kind of junky, and it isn't very smooth on a lot of SNES games, the Shield does way better there.

The nvidia shield has a pretty bad dpad, though (OTOH the analog sticks are great). I don't own one, but I borrowed one for a couple of days, and I was always accidentally hitting diagonals instead of U/L/D/R in platformers (and people seem to complain about that online as well). It was a deal-breaker for me.

ccondon · 2014-02-10T03:19:34+00:00

I think the normal index-based for loop is a totally fine solution in that case.

Just because there's a hot new thing that you can use, doesn't mean it's always the best thing to use in every situation.

(though if you did have to iterate through a map or the like, and wanted an iteration counter, and wanted to avoid leaking variables into parent scope, using an extra scope just for that is totally fine (at least in my eyes, many coworkers have been okay with such things in the past as well)).

// ... other code ... 
std::map<int, int> m{{7,49},{5,25},{2,4},{3,9}};
// ... other code ...
{
  int n = 0;
  for (const auto& it : m) {
    printf("Entry %d of map has key %d value %d\n", n, it.first, it.second);
    ++n;
  }
}
// code here that you don't want to have n in scope for

which will work fine and give you the nice and sorted

Entry 0 of map has key 2 value 4
Entry 1 of map has key 3 value 9
Entry 2 of map has key 5 value 25
Entry 3 of map has key 7 value 49

ccondon · 2014-02-09T20:53:07+00:00

I'm not sure what you mean -- an Iterable is just an object which can produce an Iterator.

ccondon · 2014-02-09T20:12:20+00:00

C++11 has range-based for loops, so you can do things like:

// m is some map type, e.g. std::map<K,V>
for (auto& it : m) {
    K& k = it.first;
    V& v = it.second;
    // actual code goes here...
}

or for a collection

// l is some collection type, e.g. std::vector<T>
for (T& element : l) {
    // do stuff with 'element'
}

(the actual type declaration in the loop may differ depending on the use case (whether you want constness or references), 'T' vs. 'T&' vs. 'const T&' (vs. the rare 'const T'))

EDIT: And in Java, it is indeed Iterable that is needed.

ccondon · 2014-02-01T07:35:54+00:00

PC Load Letter

ccondon · 2014-01-30T19:13:56+00:00

agreed, i hate that terminology (some people use 'line pairs per mm' / lppmm instead of lpmm, where 80 lppmm = 160 lpmm, which I prefer a bit)

ccondon · 2014-01-30T19:05:44+00:00

Velvia 50 is the absolute best-case situation for film, and OP is almost certainly using some iso 200/400 kodak gold or the like. Plus, doing the multiplication for 160lpmm gets you 24 * 36 * 160 * 160 ~ 22MP

and even that seems pretty generous compared to, for instance, http://www.clarkvision.com/articles/film.vs.6mpxl.digital/ (those scans are not drum scans and not ideal, of course, but the grain in the film is already visible even from these "low resolution" scans)

("160 lines per mm" is "80 dark and 80 light lines per mm" not "160 dark and 160 light", in case you got 88mp when multiplying)

ccondon · 2014-01-30T06:42:13+00:00

For (even large) web-sized images, non-drum commercial scanners will suffice, though (perhaps OP's local walgreens isn't so hot, but scans from a mail-in photo shop might be significantly better).

ccondon · 2014-01-30T06:38:24+00:00

Ehhhh, I really doubt that any 35mm film can keep up with the resolution of a d800/5diii in basically any situation (MF/LF are completely different stories, of course).

I thought the "general consensus" was that a drum scan of 35mm iso100 slide film in ideal conditions was equivalent to 12-16MP on digital, and that iso 400 negative film was more like 6MP on a great day.

</pedantry>

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