alnwlsn

20 ms·

391.
by alnwlsn 2y ago
I remember seeing video done this way on youtube during the 3D tv craze about 10 years ago (not the 3d stuff that youtube supported, this was just people messing about with 2 images side by side). It worked about as well as the examples her
392.
by alnwlsn 2y ago
FWIW I have a Framework 16, and the keyboards run QMK, so are reprogrammable. I have those keys at the top row of my macropad. They don't have labels and are in kind of a weird place, but probably not less weird than an average laptop.
393.
by alnwlsn 2y ago
To be fair, Rohde & Schwarz and Keysight aren't names I'd normally associate with consumer devices. On the other hand, neither are Mcdonands' ice cream machines.
394.
by alnwlsn 2y ago
A long time ago, I remember hearing about some castle or manor house or something like that which was being restored. There was a set of custom rugs, which, while intact, were badly faded. Somehow, they still had the original set of punch c
395.
by alnwlsn 2y ago
For the conceivable future, people will still need their lights to work and their toilets to flush. I would hope it's worth it because it's a lot better than the alternative.
396.
by alnwlsn 2y ago
I'm glad the "heavy" part of this is not understated. The big iron is out there, surprisingly cheap, and it usually stays put for quite a while because it is a damn bitch to move. Tear down a wall, and put it back later. And
397.
by alnwlsn 2y ago
It does seem awfully similar to that mouse that caught on fire a few weeks ago - https://www.reddit.com/r/pcmasterrace/comments/1i7br8w/my_gi...
398.
by alnwlsn 2y ago
Now I know what I did wrong with the ESP32-CAM powered cars when I did a very similar project in 2020 - it's was all the antenna.
399.
by alnwlsn 2y ago
One of the most polished diy relay computers (and video series) I've seen is by Paul Law [0]. He's been working on it for over 10 years, and has just started a series on using it to calculate Pi. [0] https://www.youtube
400.
by alnwlsn 2y ago
That's a pretty neat optical assembly! It reminds me of these "solid" telescopes: https://www.youtube.com/watch?v=2lf6uuU51Z8
401.
Subpixel Snake: The Web's Smallest Game [video](youtube.com)
5 points by alnwlsn 2y ago|0 comments
402.
by alnwlsn 2y ago
I was once involved in a project which projected Aruco markers in IR. So you get a slide projector, swap the bulb for an LED, have some slides made at the photo place, and you're done, right? No - slide projector slides are IR transpar
403.
by alnwlsn 2y ago
The only thing worse than that is when those things are soldered and not in a DIP socket. They still make them (or a compatible version) by the way, sealed battery and all.
404.
by alnwlsn 2y ago
To be clear, it's not the end of the mission as far as I'm aware. It will come around again and do 4 more sun flybys next year.
405.
by alnwlsn 2y ago
Yeah, it's going to get pretty hot. Scientists estimate that the probe's heat shield will endure temperatures in excess of 2,500° Fahrenheit (1,371° C) on Christmas Eve, which is pretty much the polar opposite of the North Pole.
406.
by alnwlsn 2y ago
So I attend this local annual event that has a time capsule. Each year, we bury one and dig up the one from 5 years ago. This has gone on for several decades, and people are always thinking of interesting things to put in there. I made a li
407.
by alnwlsn 2y ago
Here [0] is the datasheet for the batteries used. 25 year shelf life is spec'd. I have personally run these cells buried underground, and gotten 4.5 years out of 4 of them, though my application is just for fun and likely not as power
408.
by alnwlsn 2y ago
> "Thanks mostly to the phones age, interfacing with the UI board will be rather trivial" I guess part 2 was left as an exercise for the reader.
409.
by alnwlsn 2y ago
panel = 40 m^2 sunlight = 1370 W/m^2 So some amount less than 50 kW. Maybe about 2x photonicinduction garden light bulbs, or a few dozen normal streetlights. Seems like about the right amount to light up a very small town. But it makes
410.
by alnwlsn 2y ago
I refuse to believe this project isn't some sort of elaborate troll.
411.
by alnwlsn 2y ago
I know a lot of older communications satellites (incl. commercial ones) were just dumb repeaters - receive a signal on one frequency, retransmit it in real time on a different one, don't need to decode it or authenticate anything (alth
412.
by alnwlsn 2y ago
The thing is, a lot of that math by hand is probably not long division, it's Greek style compass and straightedge stuff. There's an absolute ton of things you can do just tracing things out with a stick, and at adequate precision
413.
by alnwlsn 2y ago
The simplest explanations I have found for involute gears is from one of those old 50's training films[0]. Not sure if this is the same one, but the first few minutes give a very intuitive explanation of where the involute shape comes
414.
by alnwlsn 2y ago
Does this seem lethal to you? If that's a big aluminum electrolytic capacitor at the bottom, and those have energy densities around 1-3 J/cm3, then I'd estimate it could hold at most 50-200J. A fired .22 bullet can have an en
415.
by alnwlsn 2y ago
Reminds me of the old Electric Imp, which was like an ESP32 before the ESP32. Also came in a (full size) SD card form factor.
416.
Show HN: The Billy Bass I put on the Internet(fishsinger.alnwlsn.com)
3 points by alnwlsn 2y ago|0 comments
417.
by alnwlsn 2y ago
Compared to plastic 3D printers, metal 3D printing ones are at minimum 100x more expensive, if not 1000x or 10000x.
418.
by alnwlsn 2y ago
Any time I see a guide like this, everyone will go on and on about the types of cutters, toolpaths, speeds & feeds, etc. but will always gloss over work holding. For every action, there is an equal and opposite reaction. Without reactio
419.
by alnwlsn 2y ago
The wick is wound in such a way so that as more of it is exposed, it curls over and burns up, thus stopping it from getting too long.
420.
by alnwlsn 2y ago
These people are still out there. When I was in high school we had the normal people, then people who took advanced placement stuff, then the "super nerds" who were at the top of all the advanced placement stuff with perfect grade

More ›