This may be a stupid question, but I just got back into pirating some shows and movies and realize that many of the QxR files are much smaller than what I downloaded in the past. Is it likely that I am sacrificing a noticeable amount of quality if I replace my files with the smaller QxR ones?...
Newer codecs are more efficient. H.265 and AV1 are often 2/3 to 1/2 the size of an H.264 file for the same quality.
Of course there are also people uploading lower quality files as well.
Does anyone recognise these power supplies? They’re cheap AliExpress led drivers and I want to change its output voltage to around 22V from 12V. I’ve read that the way to do this is to adjust the REF voltage on the IC that controls it. It’s a KA3845 but I don’t understand where that reference voltage is regulated. One...
To all the electronic nerds out there: I am trying to trigger a 555 timer by movement in a random direction that also occurs randomly and any change in position should trigger the 555. AFAIK tilt switches are not useable here. Does this idea make sense?...
No, moving a ferrite core through a coil won’t generate a voltage. You would need to move a magnet to generate a voltage.
Look for a vibration switch like one of these. If you want more control, you could use an accelerometer and a microcontroller to trigger it from a specific amount of movement.
So i have my main system, i have been running NixOS on for over a year. It has been a pleasure to daily drive. And ive recently been playing with gentoo and funtoo. And althought alot of information, which is somewhat overwhelming but is slowly growing on me and making me appreatate linux as a whole. So i was wondring what other...
I have a T480 and the battery will last me 2 days on a charge for my typical use. Since it has two batteries, I can swap the external one without having to plug in or shut down. There are lots of parts available and you can find used or refurbished laptops at a reasonable price.
The downside with the T480 is a lack of PCIe lanes. The thunderbolt only has 2 lanes, which is not so good for an external GPU. The NVMe SSD is also only 2 lanes, but I still get around 1.5GB/s, which is plenty fast for me.
Piracy is a service issue. If the streaming providers are going to punish me for using my preferred browser and operating system by limiting the quality, I will keep my money and get the video elsewhere.
There is also the issue of never knowing when the show will just disappear from the streaming service while you are in the middle of watching it because the licensing changed.
With the MATE screenshot tool, you can set a timer and set it to either capture the active window or the whole desktop. It will capture context menus when using the timer.
I have some metal film 1/2w 2.2ohm resistors in some car wiring. I’m concerned about the durability of this install and am seeking advice on how to protect the resistor once it’s soldered in place. The obvious is heat shrink tubing, but it’s there anything more substantial?...
You can get small project enclosures to put them in. Some PVC pipe and end caps could also work.
I would probably just use some good quality, adhesive heat shrink if they are out of the way though.
Alt TextA screenshot of a file manager preview window for my ~/.cache folder, which takes up 164.3 GiB and has 246,049 files and 15,126 folders. The folder was first created about 1.75 years ago with my system
You could have a cronjob run something like find /home/user/.cache -type f -atime +30 -delete, which would find files that haven’t been accessed in the last 30 days and delete them. Make sure your home partition is not mounted with the noatime option though.
I’ve never seen any of my ~/.cache directories get more than a few GB either and I never bother to clean them.
I am curious what OP was doing that used that much space though. That’s certainly not typical.
Just exploring about this tp-link XN020-G3v router. I’m mostly interested in connecting to the UART, won’t be tinkering with electronics of it, but out of curiosity I tried to search what these chips are. and I couldn’t find much about the big chip. Can anyone describe the 4 main chips on it ? Best would be datasheet, but...
The flash chip is a common 16 MiB SPI NOR flash. An easy way to read or write it would be to use flashrom on a single board computer like a Raspberry Pi.
Unfortunately, that router is not supported by OpenWrt or DD-WRT, so you probably won’t be able to do much with it.
Thank you so much, comrades! I am feeling pretty comfortable with linux mint, and now would like some suggestions for some absolutely necessary FOSS or free license software for the OS. So far I have the standard, Firefox, ThunderBird, LibreOffice, yada yada. Thank you again to everyone on the linux comm! sankara-salute
KiCAD for PCB design.
PulseView for USB logic analyzers.
DSRemote for remote control of Rigol oscilloscopes.
FreeCAD for 3D CAD.
SDR++ and SDRangel for SDR.
Fldigi, wsjtx & QSSTV for ham radio digital modes.
I purchased a second hand ThinkPad from an ebay outlet. When it arrived I wiped windows 10 from it and installed ubuntu with no issues. It runs perfect without any weird fixes needed. However, after just checking the bios to see if I could change some settings, I realised it has a supervisor password....
The password will be stored in EEPROM in newer laptops. Removing the battery will not clear the password and could make things even worse since you won’t be able to change any settings that get reset.
The best thing would be to return it and find a different one that’s not locked.
I always shoot in raw+jpeg with the jpeg quality set to 100%. The raw files have a higher dynamic range and there is little or no processing done to them. The files are large, but storage space is cheap these days. The jpeg files are for convenience and if I don’t like the way they come out, I can process the raw file however I want and export it to whatever format is most suitable for what I’m using it for.
It connects my laptop to the internet when I’m away from home.
A phone can’t replace a computer unless you put Linux on it and connect a monitor and keyboard. Even then, it will perform like a 15 year old computer.
I’ve had good results discharging a 450V 1kJ capacitor bank through several turns of 10 AWG wire. If you don’t have a capacitor bank laying around, one of those magnetizers will work just as well.
Many fonts have a license that allows them to be embedded in a pdf. Newer fonts usually have a flag that tells the software if the font can be embedded or not, not all software respects that flag though. Older fonts don’t have the flag and will embed even if you are not allowed to embed them.
If you don’t want to get them from microsoft, you can purchase a license elsewhere. Microsoft allows them to be distributed freely as long as the files are not modified. That’s why they are always packaged in an executable installer.
Those fonts are not free. They may be just ttf files, but there is a massive amount of work that goes into creating a font with unicode support. If you just want fonts for basic compatibility, you can use open source fonts with compatible metrics such as the Liberation fonts or use the microsoft core fonts that haven’t been updated in 20 years.
Are movie and show file sizes more efficient than they were years ago?
This may be a stupid question, but I just got back into pirating some shows and movies and realize that many of the QxR files are much smaller than what I downloaded in the past. Is it likely that I am sacrificing a noticeable amount of quality if I replace my files with the smaller QxR ones?...
Dumbest Thing you have done distro-hopping?
I just discovered something I did so idiotic I need a stronger adjective that what is in my name....
Adjusting SMPS output voltage (discuss.tchncs.de)
Does anyone recognise these power supplies? They’re cheap AliExpress led drivers and I want to change its output voltage to around 22V from 12V. I’ve read that the way to do this is to adjust the REF voltage on the IC that controls it. It’s a KA3845 but I don’t understand where that reference voltage is regulated. One...
How to solve power supply whine with continuous dimming LED? (imgur.com)
My project is a “breathing” white 12v LED strip controlled by an esp32 on a dev board, and switched with an IFLZ44N mosfet....
Surface Go 2 with 4GB Ram and 4425Y worth it?
Hi! There’s no Surface on Linux Lemmy community (yet), but I didn’t feel like asking on reddit, so I thought that this community is my best bet....
Ferrit core as 555 trigger?
To all the electronic nerds out there: I am trying to trigger a 555 timer by movement in a random direction that also occurs randomly and any change in position should trigger the 555. AFAIK tilt switches are not useable here. Does this idea make sense?...
Query about your linux daily drivers?
So i have my main system, i have been running NixOS on for over a year. It has been a pleasure to daily drive. And ive recently been playing with gentoo and funtoo. And althought alot of information, which is somewhat overwhelming but is slowly growing on me and making me appreatate linux as a whole. So i was wondring what other...
Piracy even when I can get it legally
This is my small rant against the ‘features’ that big streaming services provided vis a vis the convenience of pirating the same thing....
Linux Mint - Screenshot annoyance
When trying to capture an area of the screen; specifically a Firefox extension; the context menu disappears when I press Ctrl-Shift-PrintScreen...
Fonts
I always use Windows fonts with Linux. What font do you use?
what caused you to get into Linux?
What caused you to get into it, are you an evangel and are you obsessed?
Housing for resistor?
I have some metal film 1/2w 2.2ohm resistors in some car wiring. I’m concerned about the durability of this install and am seeking advice on how to protect the resistor once it’s soldered in place. The obvious is heat shrink tubing, but it’s there anything more substantial?...
Reminder to clear your ~/.cache folder every now and then (lemmy.world)
Alt TextA screenshot of a file manager preview window for my ~/.cache folder, which takes up 164.3 GiB and has 246,049 files and 15,126 folders. The folder was first created about 1.75 years ago with my system
Can anyone find datasheets for these ICs ?
Just exploring about this tp-link XN020-G3v router. I’m mostly interested in connecting to the UART, won’t be tinkering with electronics of it, but out of curiosity I tried to search what these chips are. and I couldn’t find much about the big chip. Can anyone describe the 4 main chips on it ? Best would be datasheet, but...
I made it to Linux! What is your must-have FOSS or Free Software for linux?
Thank you so much, comrades! I am feeling pretty comfortable with linux mint, and now would like some suggestions for some absolutely necessary FOSS or free license software for the OS. So far I have the standard, Firefox, ThunderBird, LibreOffice, yada yada. Thank you again to everyone on the linux comm! sankara-salute
Shadow Cast: GPU accelerated screen and audio recording for Linux (github.com)
I created Shadow Cast after becoming disillusioned with the lack of simple, performant display recording utilities for X11. All feedback welcome.
Is an unknown supervisor password for ThinkPad bios an issue if I've already installed linux?
I purchased a second hand ThinkPad from an ebay outlet. When it arrived I wiped windows 10 from it and installed ubuntu with no issues. It runs perfect without any weird fixes needed. However, after just checking the bios to see if I could change some settings, I realised it has a supervisor password....
your stance on image compression and/ or avif/jxl?
Do you have a general stance about it?...
What makes a smartphone useful to you?
Always had a cheap desktop computer and never thought a phone was worth it. Is there a reason people like me should reconsider?
When I was a kid my Dad made a magnet charger with some electrified copper coils would this be something that could be used to achieve similar results somehow? TIA (i.imgur.com)
Basic fonts
What is your “basic” list of fonts every linux desktop user should install ?