invalidator

10 ms·

61.
by invalidator 3y ago
I like little puzzles so I gave it a shot in Ruby. #!/usr/bin/ruby require 'digest' charmap = %w{zero one two three four five six seven eight nine a b c d e f} (0..0xf).map do |prefix| Process
62.
by invalidator 3y ago
I've used this technique on several of my projects. The formed threads are strong and reliable. It cuts down assembly steps and BOM. The tight fit means the screws won't back out (like locktite or nylocks). The only downside i
63.
by invalidator 3y ago
> 1in = ??? 25.4 mm, ever since 1959 when we redefined it.
64.
by invalidator 3y ago
Mostly yes. Your applications run in a standard Linux environment and if you pop up a terminal, hey, it's your favorite distro and it works. There's some learning curve for features which exist for valid reasons, especially aroun
65.
by invalidator 3y ago
They are providing the source as required. However, a key part of the GPL is that RH's customers should also be able to redistribute the source to anyone else, and RH is preventing that through contract law.
66.
by invalidator 3y ago
How comfortable are you with DIY electrics? Can you lay out a panel somewhere in the sun? Do you want it to run at night? Do you want it to automatically switch to grid power if needed?
67.
by invalidator 3y ago
They did roughly that with the previous hull: it was used until it had to be derated. This accident was on the replacement hull which already had a few cycles on it... tested but supposedly not worn out. Material science is hard, especiall
68.
by invalidator 3y ago
The carbon fiber hull has a limited cycle life. It's designed for a single-digits number of dives, and it becomes weaker on each cycle.
69.
by invalidator 3y ago
NiMH handles gentle overcharging gracefully. They generate a little bit of hydrogen, and the battery has an internal catalyst to convert it back. It can do that indefinitely as long as it's at a low rate. When aggressively overcharge
70.
by invalidator 3y ago
> does wire-wrapping even exist any more? Yes! I gave it a try a few years ago and I am impressed. It's faster, denser, and cleaner than soldering wires onto perfboard. Being able to rework by just unwinding a wire is great. I do
71.
by invalidator 4y ago
Shutup10 is a good start.
72.
by invalidator 4y ago
It will always have some impact because you're thrashing the caches. A couple more things to try: Reduce swappiness. Linux tries to swap out idle pages to free memory for block cache, even when there's only light memory pressure.
73.
by invalidator 4y ago
A few years ago we couldn't upgrade the kernel because XFS had a regression. Our choices were: revert the XFS changes in the newer kernel; backport security fixes to the version we were already using. We went with the latter because o
74.
by invalidator 4y ago
Now realize that this applies to everything, not just computers. Unless you've walked a mile in their shoes, you don't really understand the struggles of LGBTQ folks, the homeless, CEOs, assembly line workers... They will try to
75.
by invalidator 4y ago
I worked at Sun around that time. Our version: "The network is the computer, and Cisco is the network... therefore Cisco is the computer."
76.
by invalidator 4y ago
If you're looking for chips / SOCs which implement a given arch, this Wikipedia template from the article is pretty good: https://en.wikipedia.org/wiki/Template:Application_ARM-based... If you want to find a
77.
by invalidator 4y ago
> The kernel is armv6l and I still don’t know what the last letter is for. ARM is bi-endian. I'm pretty sure the 'l' means the kernel was compiled to be little-endian.
78.
by invalidator 4y ago
> apt is just annoyingly slow A lot of that is due to aggressive use of fsync. apt tries hard to be robust against power failures when changing the system. When using it for something ephemeral (say, part of a CI workflow) you can disab
79.
by invalidator 4y ago
The DS1104Z has a MSO option: if you add the RPL1116 logic probes, you can sample 8 channels at 1GSa/s, or 16 ch at 500MSa/s. That should be easily capable of capturing 80MHz SPI. The downside to using a scope is it's much c
80.
by invalidator 4y ago
+1 for getting a LA for digital work. I started with a Saleae clone (dirt cheap and works), and loved it so much that I bought a Logic 8. They have a 50% discount for hobbyists which brought it down to an affordable luxury for me. https:
81.
by invalidator 4y ago
It's so true. There was an incredible influx of these folks after the dotcom boom, after the appropriate delay for them to get through college. Not that there's anything wrong with making money, but it was certainly a culture sh
82.
by invalidator 4y ago
Like you say, it can be a mix. They can also happen at the same time. I am blessed that I can make a good living doing what I love.
83.
by invalidator 4y ago
I think the concept they're after is there are two large groups of people into tech: the people who enjoy it and are here because they're doing what they love; and the people who are here for the money. I don't know if Confor
84.
by invalidator 4y ago
McMurdo is on the edge of the continent, at sea level. It's harsh, but not extreme like the things further inland, such as Amundsen-Scott (at the geographic pole), or Concordia (over 10,000 feet elevation in the middle of nowhere). T
85.
by invalidator 4y ago
Did you zoom in? When I zoom in on one of the major intersections and look at the cars, it looks about right. Half-meter resolution means that each car should be several blurry pixels wide, and that's what I get.
86.
by invalidator 4y ago
Obligatory XKCD: https://xkcd.com/386/ It's solid advice.
87.
by invalidator 4y ago
I did it in the web UI in a couple minutes with down-space-down-space-down-space.... Also make sure to go to Advanced Options, View Deleted Items, and purge them from there.
88.
by invalidator 4y ago
https://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird#Recor... Honorable mention goes to the Swedes with the Saab Viggen who managed to get missile lock on the SR-71 as it cruised through a narrow corridor past their
89.
by invalidator 4y ago
Excellent! This will make it much more browsable. Thanks!
90.
by invalidator 4y ago
Great project, thanks for sharing! I think it would be more useful if there were more ways to sort and organize the content. Right now there's only "Front Page" (I assume that's what's hot), and "Newest".

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