finalarbiter

@finalarbiter@lemmy.dbzer0.com

• ⁨Comment⁩ on ⁨3D Printer Simulator could take the guesswork out of printing — Virtual 3D printer mirrors physical machine's quirks, like stringing, supports multi-color printing⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  The thing is, running a simulation is a pretty inefficient way to do this. Until relatively recently, most printers lacked the computational bandwidth to run a simulation in parallel with active control (my ender 3 back in 2018 didn’t even have the capacity to enable all features if you wanted a leveling probe). Even now, you wouldn’t want to run this on the same hardware that’s actually controlling the machine, since the simulation would delay its ability to send control signals in real time. That’s why Klipper uses a secondary control board, it offloads the extra computation to ensure the primary controller only has to compute the bare minimum to operate with as minimal a delay as possible.

  Also, a parallel simulation just isn’t necessarily the most efficient way to catch issues. Thermal control accuracy has been a focus in the printing community at least since Anet A8 printers were burning down people’s homes, and we’re pretty good at preventing thermal runway these days.

  On the motor side, the accuracy issues are largely a result of an open loop control system- The steppers have no way of telling the controller that they moved the correct amount. Thus, a simulation wouldn’t help with positional accuracy since the board has no idea if a motor misses a step anyway. There are some mitigating tools like stallguard for load sending, but it’s not really the same thing.

• ⁨Comment⁩ on ⁨3D Printer Simulator could take the guesswork out of printing — Virtual 3D printer mirrors physical machine's quirks, like stringing, supports multi-color printing⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  I think this will ultimately fall into the same category as watching a simukated CAM toolpath before running CNC machining operations- it will catch the more obvious mistakes like unsupported surfaces, but won’t be useful at catching more subtle issues caused by specific idiosyncrasies of the machine or material.

• ⁨Comment⁩ on ⁨3D Printer Simulator could take the guesswork out of printing — Virtual 3D printer mirrors physical machine's quirks, like stringing, supports multi-color printing⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  The Bambu printers do some cool stuff with measuring resonance to measure things like lubrication and belt tension. This is theoretically possible on any machine that can do Klipper’s inout shaping, but requires a LOT of data to be useful (from what I understand), which is orobably why we don’t see many printers on the market that can do that.

  For thermals, Marlin (one of the popular printer firmwares) actually evaluates the control response of the heater based on the, rather than just looking at a specific temperature range. If the behavior is sufficiently different than what the system is tuned for, it will throw a temp error and shut down before thermal runaway occurs. I would expect other modern firmwares (e.g. Klipper) do this as well, but I don’t have as much experience tinkering with them and don’t want to make definitive statements.

• ⁨Comment⁩ on ⁨Let's play this game again⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  You are not immune to your powers- when time stops, so do you

• ⁨Comment⁩ on ⁨The technology to end traffic deaths exists. Why aren’t we using it?⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Very early on, Tesla used lidar in addition to optical sensors. However, they only use optical sensors today and have for a while. Like many of the poor decisions at that company, the change to optical-only was made at Musk’s demand.

• ⁨Comment⁩ on ⁨Nextcloud cries foul over Google Play Store app rejection⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  Thanks for clarifying, I thought the comment above was asking why it needed file access in the first place, not all file access.

• ⁨Comment⁩ on ⁨Boys and beans and...⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  Baggier pants seem to be coming back in style. Skin-tight seems to have been more of a millennial preference

• ⁨Comment⁩ on ⁨Boys and beans and...⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  Try looking for a boot cut. It’s similar, kind of baggy and the cuff is oversized to fit over boots (hence the name)

• ⁨Comment⁩ on ⁨Tesla Reportedly Has $800 Million Worth of Cybertrucks That Nobody Wants⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  At least the HHR had a functional rear-view mirror

• ⁨Comment⁩ on ⁨Nextcloud cries foul over Google Play Store app rejection⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  How do you think torrents work? They basically just download a file, but from multiple people instead of a single server. It needs access to the file system so it can save the files.

• ⁨Comment⁩ on ⁨Need help with 3d printer⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Aw man, not that their machines were really anything special, but my printing journey started with their rebadged wanhao duplicator i3. Monoprice printers somehow made even creality look expensive at the time!

• ⁨Comment⁩ on ⁨Need help with 3d printer⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Looks like this printer is a rebadged flashforge adventurer. Monoprice also sells a version. You might be able to find a version of the firmware from one of those companies and use it.

• ⁨Comment⁩ on ⁨Helpful shitpost for students⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Is forest free or paid? It’s kind of hard to be both. If it’s a free download but requires a subscription or in app purchases to be useful, then it’s not really free.

• ⁨Comment⁩ on ⁨I dont know where to put this, no⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  There are indeed plenty of copies, but I wonder if somewhere the whole playlist was properly archived. I’d love to peruse it again for old time’s sake

• ⁨Comment⁩ on ⁨I dont know where to put this, no⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Back in the day, it was kept on the sacred ‘important videos’ playlist