A Reddit Refugee. Zero ragrets.

Engineer, permanent pirate, lover of all things mechanical and on wheels

moved here from lemmy.one because there are no active admins on that instance.

  • 20 Posts
  • 520 Comments
Joined 2 years ago
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Cake day: December 22nd, 2023

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  • lemmy.dbzer0.com - Anarchists who hate tankies and any rules except their own, which are different and therefore better

    I mean. The only real rules we have mostly surround don’t be a dick and the bare minimum to manage a public forum. If you can’t really pass that test then you weren’t welcome in the first place.

    Lemmy is what you make of it. You have to put effort into tuning your subscribed communities, blocklists, etc. There is no algorithm to filter the chaff for you. I see very little inter-instance drama these days because I’ve filtered it out.


  • What are you gaining by coupling them instead series? Are you trying to obtain higher accelerations? Never really heard of two motors before.

    As long as the steppers have their steps in sync, I think it should work. If the step positions are out of sync even half a degree you’ll be seeing motor heating and poor performance as the motors try to fight each other into position. But I feel like you won’t see as much speed benefit as you think since you’ll run out of belt tension and rail stiffness, causing unwanted vibrations and oscillation at higher acceleration.






  • A. Run a batch transcode with Handbrake and make all your stored files compatible with your end players.
    It sounds like the more recent things you are downloading are in a codec that is not compatible with your playback devices. E.g, older torrents are frequently an H.264 stream in an MP4 container, which practically every device can play now. Many modern releases are being distributed in H.265 or AV1, as they have significant size and quality benefits, but many older devices don’t support them natively. so it is forcing Jellyfin to live transcode to h.264. Find out what older titles play without any buffer or playback lag/high CPU usage and check what codec those files are in. That is what you’ll need to batch encode everything over to.

    B. Sounds like you are still relying on CPU transcoding which is absolute dog. What mini pc specs do you have? If it’s an AMD or Intel CPU/APU then it should have hardware encode/decode included in it’s integrated GPU. When using hardware transcoding the CPU load is generally minimal for 1 to 2 streams. See the Jellyfin docs on hardware acceleration here.


  • I have had bad, wet sections of PLA refuse to adhere to beds or its own layers. There’s a lot of ways a filament manufacturer could fuck up the blend or moisture control, especially with cheaper shit.

    Cut a section out and hold a lighter or heat gun under the end until it softens and curls up.
    Good filament should look smooth and the same color. Bad filament will get bubbly, wart-looking texture and take on a yellow sheen. The bubbles are moisture leaving the plastic and the yellow sheen is the plastic breaking down, it will have no adhesion.

    Worth trying to dry it just to see if it improves at all but cheap filament is gonna be cheap.


  • My default goto with any stability issue is to first force a new drive self test

    smartctl -l selftest /dev/nvme0  
    
    

    And then I would also run a complete extended memory test (memtest86) to ensure bad ram isn’t doing something dumb like corrupting the part of the kernel that handles disk IO. The number of times I’ve had unsolvable issues that traced to an unstable stick of memory is… Surprisingly high.

    If the memtest passes try fsck’ing nvme0, if there are corrupted blocks yeah it’s possible the SSD is dying but the controller isn’t reporting it.


  • Questionable implementation but sound logic. Part of the reason EV fires are so hard to fight is you can’t just dump water on them, they actually have to be buried and smothered in sand/dirt or something that will insulate it from air and control heat. And if the fire starts inside the vehicle, ejecting the battery away from the fire can keep the fire from getting 100x worse.

    I don’t know why you’d fire it sideways, directly at a sidewalk, at a few meters a second though. And not like, down and out the back. Make the rear bumper a pop-free folds down ramp lol