Living offgrid in a campervan since 2018 w/ pibble+boxer Muffin.

LIKE dogs, books, thoughtful people of all flavors DISLIKE bullies, sh1tposters, partisans, noise

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Joined 1 year ago
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Cake day: June 14th, 2023

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  • Do normal people who don’t do this stuff for a living use Linux now, outside handheld gaming devices?

    I run into folks using linux fairly often in tech hobbies. Ham operators, DIY solar folk, people dorking around with a RasPi, etc. And some Normals who want a lighter experience than Win.

    Last dedicated windows box I ran at home was Windows NT 4, IIRC. Last time I had to use it at work was Win7 (?) before I retired. I do have a Win7 virtual somewhere around here I spin up every couple years to run something obscure I can’t get to run in WINE.





  • warning: some non-linux included below

    • minix
    • slackware
    • early Debian
    • FreeBSD (ftp installs instead of 20 floppies! OMG!)
    • Debian
    • Crunchbang <-- loved that original project
    • Solaris (friend gave me a Sparc 5)
    • DSL, Puppy linux (had a tiny netbook)
    • **Debian on workstations and servers since ~2014 **
    • various debian-based distros on RPI

    I do spin up other distros in a VM from time to time to see what’s what. Most recently NixOS since people won’t STFU about it. :-)







  • Title says plugged in and body says plugged in at 100%; these can be separate concepts if one has fine control over the charging voltage.

    Will leaving my things plugged in at 100% hurt it more than constantly unplugging at 80% and replugging at 20%?

    Plenty of academic research out there showing that pegging Li to 100% SoC reduces cycle counts to EOL (by electrolyte degradation and other processes), especially at higher voltages/temps. You didn’t mention capacity reduction associated with charging at freezing temps so I assume that is a non-issue in your use case.

    It seems to me that if leaving it plugged in is an option you have shore/mains/grid power. So I’d

    • charge to middling SoC and unplug the powerstation (according to the manual); and
    • run the loads off the wall socket

    Am I missing something here?

    offgrid with LiFePO4

    I live offgrid with Li on a very limited budget, so performance and maximal cycle life is a practical matter for me. Based on my own reading and experimentation I charge my 4S LiFePO4 to 13.8v (3.45Vpc) until Absorption falls to 0.10C then quasi-float at 13.31v (3.3275Vpc). I warm them to 50F and charge at ≤0.4C.


  • What’s the closest you have ever been to actually dying?

    There are a few stories. Since we are in public I’ll pick one that won’t freak out onlookers.

    tldr

    I was drawn down on by two soldiers from my own unit because I was unexpectedly left alone in a place where single actors were not allowed. Cold War stuff.

    full version

    I was working with a [redacted] which had a 2m “dead man zone” around it in this context, demarcated by a paint stripe. SOP was for the guards1 to shoot anyone who entered the zone solo; the assumption being someone would only do that for sabotage.

    When maintenance or other operations were required, we would

    • team up with another person of equal knowledge of the operation
    • coordinate to enter the zone simultaneously
    • perform the operation. maintaining line of sight with them and their hands
    • coordinate to exit simultaneously

    I got assigned to do some maint with a squadmate who was both highly intelligent and also a fscking idiot. We entered together, started the task, and then he unexpectedly walked out.2 I snapped my head around and saw him passing over the line. The idiot had left me alone in the Dead Man Zone and things were turning to shit. The guards chambered rounds and were yelling at me to get away from the [redacted].

    I’d already put my arms up and had started backpedaling out. I don’t remember the immediate aftermath clearly because my stressmeter was pegged at aneurysm / this isn’t happening. Through some miracle I did not download into my drawers.

    I never saw him working in the Zone again so I suppose he was blacklisted from that duty. And no one else ever got left alone in there AFAIK.


    1 our unit were also providing the guard rotation; no one else had the clearance required to be that close to the [redacted]. So the guards in this story were my buddies and were abso-fscking-lutely willing to shoot. We all were; it was part of the job. We did have infantry support on the outer perimeter but they were so far outside the razorwire fences we never saw them working. Perhaps it was just as well; they told us they hated us every chance they got. They thought we were [insert homophobic slur here] and [insert MOS-specific slur here] because we rarely carried rifles and did not engage in recreational fistfighting. But we were grateful for their protection, however begrudgingly provided.

    2 IIRC he walked out to get a torque wrench or similar





  • Have you ever created your own job perks?

    No, but I had a small company and asked the worker bees to define their own perks.

    There were four employees. Three of them played paintball together and wanted paintballs. So I brought a case of their favorite balls into the office before their outings. The fourth guy wanted to have baby carrots to snack on. He ate ~3 lbs a week. Dude would code for hours as long as he was crunching carrots.

    I couldn’t have guessed what any of them wanted but they were absolutely cranked by getting it. This was a huge lesson for me: ask people what they want.