In grad school I bought a blue (405nm) laser pointer. It was supposed to be <5mW, but I measured it at over 70mW.
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qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Is it possible to manage Apple devices on Linux?
2·6 months agoOthers mentioned virtualization — I have had issues with COW filesystems (btrfs), as COW does not always play nicely with VM drives (extreme fragmentation and very poor performance).
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Linux kernel is leaving 486 CPUs behind, only 18 years after the last one made
1·6 months agoMaybe there’s some interplay between amd64 and x64 architectures.
AMD64 and x64 are the same thing. Do you mean AMD64 and x86? There is definitely interplay there, as AMD64 implements the x86-32 instruction set.
You mentioned ham radio — definitely fun! It’s a process to get into it though, as you need to study/pass an exam, and then you need a radio. Radios range from cheap ($25 or so) in the VHF/UHF (“walkie talkie”-style) to more expensive for an HF rig ($1000 range for 100W HF). If you want to get into low power (“QRP”) it can be much cheaper. You also need a fair amount of space for a good antenna setup…
There are tons of different communication modes, some without a computer and, like you mentioned, some that use computers.
wsjtxandfldigiare popular programs.Good luck!
qjkxbmwvz@startrek.websiteto
Funny@sh.itjust.works•There are two types of tech enthusiasts
194·7 months agoYou’re just gatekeeping.
ThinkPad with a generator? Nothing wrong with that — maybe add LoRa, get a ham license and add some packet radio or digital modes and you have a neat disaster setup.
MacBook that you don’t want to scuff? Well, I’m not that precious with my gear, but you do you. Many Mac laptops last a very long time, and the performance of modern Apple silicon is really, really impressive — and you have UNIX out of the box. Plenty for a tech enthusiast to like.
qjkxbmwvz@startrek.websiteto
Funny@sh.itjust.works•They will go far and server the Empire well.
2·9 months agoWait til you see fetal MRIs…
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Apparently, 12% of Technology Workers Believe that MacOS is based on Linux
2·9 months agoNewer macOS is not Unix certified.
It’s UNIX 03 compliant https://en.m.wikipedia.org/wiki/Single_UNIX_Specification
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Apparently, 12% of Technology Workers Believe that MacOS is based on Linux
4·9 months agoOne or two Linux distros were (are?) UNIX certified, though.
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Can we please, PLEASE for gods sake just all agree that arch is not and will never be a good beginner distro no matter how many times you fork it?
1·9 months agoHaha yeah that was the counter example I was thinking of. I agree completely — you could make a Gentoo from source beginner distro, and I think you could make it reasonably “idiot proof,” but it would still be a bad user experience most likely (too much time spent compiling).
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•Can we please, PLEASE for gods sake just all agree that arch is not and will never be a good beginner distro no matter how many times you fork it?
71·9 months agoIf your distro can’t be forked into a “beginner distro” then it’s fundamentally flawed IMHO.
To be clear, I’ve used Arch as my daily drivers for a while, and while it’s not the best fit for my needs (I use Debian mostly), there’s nothing that I experienced that was incompatible with a “beginner” distro.
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•(Gentoo)Help me reduce my boot up memory usage
12·9 months agoYou can also drop cache for debugging by running something like
echo 3 | sudo tee /proc/sys/vm/drop-cachesBut remember that the kernel knows best — this RAM will automatically be freed up when needed and you should never run this except for debugging (or maybe benchmarking).
qjkxbmwvz@startrek.websiteto
Privacy@lemmy.ml•Looking for the best solution to block ads/trackers on my entire home network.
5·9 months agoI have one SSID with pihole (which I use), and one without. Works pretty well, if you’re ok with a VLAN-aware network.
qjkxbmwvz@startrek.websiteto
Asklemmy@lemmy.ml•What are some tech products that you want that you can't seem to find?
2·9 months agoAh, good point!
qjkxbmwvz@startrek.websiteto
Asklemmy@lemmy.ml•What are some tech products that you want that you can't seem to find?
6·9 months agoDell XPS 13 Snapdragon seems like it’s trying to compete with the Air.
man rot13;)
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•What are some fun or unconventional uses for an old Atom notebook with 2GB RAM?
1·9 months agoI’ve been super happy with it. Knock on wood it’s been super reliable. I have a single ZFS drive, take snapshots with various retention policies, nothing fancy.
Another fun thing is to set up a reverse proxy on it as an endpoint for services on your local (home) network which can only be accessed by VPN. For example, my Jellyfin service isn’t public facing, but I didn’t want e.g. my parents to need to set up WireGuard. So instead they can point their TV to a raspberry pi on their network to access the service — even a first gen RPI can handle Jellyfin reverse proxy over WireGuard for moderate bitrates!
qjkxbmwvz@startrek.websiteto
Asklemmy@lemmy.ml•What are some examples of 'common sense' which are nonsense?
24·9 months agoI’m not mad at the huge amount I pay in taxes. I’m mad about what I get in return.
qjkxbmwvz@startrek.websiteto
Linux@lemmy.ml•What are some fun or unconventional uses for an old Atom notebook with 2GB RAM?
14·9 months agoWireGuard, and an external HDD. Run at a remote location for off-site backup.
I do this with a raspberry pi 3 at the in-laws. I copied the data over locally before setting it up, and after that it’s just nightly incremental rsync, which is fine even over my slow (35Mbps) upload.

xscreensaver of course! Note that this is not an option on Windows—jwz hates Microsoft, and any xscreensaver port to Windows is against his wishes.
I use yabai and sketchybar for a tiling WM feel. It’s nowhere as nice as my preferred i3, but it’s ok. Unfortunately it often breaks with major OS updates, so I’m sure to hold back updating my system until yabai is working.
IIRC
sshfswill work on macOS but it’s more work to install. Worth it if allowed by your IT policies and your work can benefit from it.Vim, tmux, and the usual *NIX stuff you might want.
The coreutils are not the GNU coreutils you typically find on a Linux system, so you may find a few differences. I believe
sedis slightly different, and the flags forlsmust be before the filename arguments, but I’ve found it’s mostly silly stuff like that (I used zsh before using macOS, so no problem there).