• 9 Posts
  • 250 Comments
Joined 1 year ago
cake
Cake day: July 3rd, 2023

help-circle
  • There’s a limit for file size on the Usenet

    No, there is no limit on the file size on usenet. There’s a limit on the individual article size, but larger files just require more articles.

    The reason why files were split on usenet was completion and corruption, and probably also media size originally. Say you need to post a 700MB file to alt.binaries.erotica.grannies.diapers, then you could just split those 700MB into 477867 articles of 1.5kB each, but if a single article is then corrupted or dropped, then nobody can get the file. If you split the 700MB into 35 files of 20MB each, and each 20MB file into 13654 articles, then a dropped article only corrupts a single file. Add to that, that completion issues often occured (or is it occurs? it’s been a long while since I got my Linux iso files from usenet) close to each other. So there might be a bunch of corruption in a single file, but everything else is fine. This is useful if your main provider was your ISPs complimentary usenet server, and you only got the rest from a pay by download service.

    About the media comment earlier, I can’t be sure. I wasn’t around in the early days, but I know that the 700MB file size for movies came from the limitations of CDs. Splitting files can quite possibly stem from some similar restrictions on a removable media.

    You can thank WinRar for powering the entire sharing scene for decades

    And the saints behind winrar for only bugging you to pay. TBH first time installing 7z on a new windows install, instead of winrar, felt a bit sad.







  • I wouldn’t mind one in my basement… If I had a basement. But I do have a nice shed, where a 30MW reactor would fit nicely.

    Nukeheads are insane

    That’s your opinion. My opinion is that we need distributed power generation that can handle baseload. And neither solar nor wind can do that. My personal experience is, that our wind turbine usually doesn’t spin for several periods of up to 10 days in December through March. And energy storage with the required capacity still doesn’t exist either. Thus the power plants will be burning LNG, biomass, garbage or oil and coal, for the foreseeable future.

    A centrally controlled, well regulated, network of small reactors will solve the problem.



  • I think I understand now. I’ve taught intro to electronics for years, and I’d recommend you start out experimenting with resistor networks and measurement techniques. In that case you really don’t need to spend much. All you need is:

    • breadboards, plural
    • a resistor kit
    • some battery holders or clips
    • jumper wire, just get the cheap bundles with only plugs and no sockets.
    • pliers and sidecutters. Spend more than 3usd on the sidecutters, and do not use them for anything but thin wire and component leads.
    • a decent entry level multimeter, a unitrend ut33a can be had for about 20usd plus shipping on ebay, and is fine for starting out.

    Try designing networks of resistors with pen and paper, calculate voltages across the individual resistors to get familiar with Ohm’s law and Kirchhoff’s circuit laws (BTW don’t attempt to understand Kirchoff using Wikipedia, someone wanted to flex their brain when writing that article). Build more and more advanced circuits, start out with series, then parallel, and finally mix series and parallel resistors. Try to work out the power draw of each resistor, and just once try to blow one up… On purpose, that is :)

    When you’ve sorta got the hang of it, you can progress on to adding capacitance and inductance in you circuits, or digital logics, or what ever you like. But getting the hang on basic circuit theory? well, that can take some time.


  • I don’t understand the list, the first don’t have a question mark, but then they do. Does that mean that the first items are already in your possession and you imagine needing the rest?

    If you have all the stuff on your list, I get a book. Practical Electronics for Inventors by Paul Scherz is a terrific resource. With that in hand you can start dreaming up projects and realizing them.

    If the question mark is the stuff you expect to need, I’d say that a lab power supply is almost a must have. Nothing fancy, something that’ll do 20 or 30V and a few amps, if you’re looking for something a bit more, then same specs but with current limiting. Something like this https://www.reichelt.de/de/en/laboratory-power-supply-0-30-v-0-3-a-risu-compliant-mcp-lbn-303-p324544.html but see if there’s a second hand market for this stuff in your area.

    Some basic components kits like a resistor and a capacitor kit. Maybe assorted diodes and transistors. Maybe get some voltage regulators, 7805 7809 and 7812, they can come in handy, when you’ve only got a single output on the psu and need different voltages.

    That should be enough for a few months of fun. Next you’ll maybe play with timing and triggers. So a pc scope opamps and some 555s.





  • Agreed, why not return low level joblistings for the area where the return address is. Add a few sassy stickers you got from temu as a gift and some information on starting a union.

    Don’t be an ass to wage slaves, they’re not your enemy, they’re your peers, show them the way instead.

    Arise ye pris’ners of starvation
    Arise ye wretched of the earth