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Joined 2 years ago
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Cake day: June 12th, 2023

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  • I doubt that it’ll really have killer features.

    You’ll most likely be able to exchange the 2 Hotend-Toolhead for a Laser-Hotend, it’ll have a heated AMS, it may have a vinyl-cutter head.

    I don’t really think I’d want to Laser on my heated bed, or cut on it either. The Fumes from lasering will impact durability of anything in the printer, without really lots of ventilation it will produce lots of dust (well, ash).
    Cutting on the same head is weird, as a cutter needs to resist a bit or cutting force.

    The dual-nozzle-design is interesting, but I think it’s still vastly inferior to multiple toolheads, with anything over 2 materials there is still cutting required. Depending on how they solved the issue with feeding the two hotends, I’m not sure how there won’t be quite a bit of added complexity for loading the AMS, where you have to think which head needs which filament.
    Using a single extruder gear for both hotends also increases chances and risk of cross-contamination. I’ve never had a printer who didn’t occasionally chew filament.
    Moving the Hotends on linear rails, having a mechanical drop-stopper on the hotend all increase complexity, I’m not sure how bad blob of dooms will get here.

    If they use their touted servo-design actually on the corexy kinematics, that will be interesting, because conventional wisdom says it doesn’t really improve 3d-printing performance. At least not until you get to ridiculous builds (think minuteman)

    Cost will be interesting, as apparently the H2D was touted to “be above current X1 line”, if that were to include X1E and the $2500 price tag it would be… rather expensive.
    But even when it’s “just” more expensive than the X1C at $1200/$1450, coming to… idk, $1500 in it’s bare configuration, that’s rather big chunk of change for a hobbyist. And they will (hopefully) have lost lots of enthusiasts with their firmware-stunt.

    Something kinda cool that could theoretically be done would be print smoothing with the laser. Print it, change the tool, laser (at least) the stairstepping on top away.



  • The whole idea is they should be safer than us at driving. It only takes fog (or a painted wall) to conclude that won’t be achieved with cameras only.

    Well, I do still think that cameras could reach “superhuman” levels of safety.
    (very dense) Fog makes the cameras useless, A self driving car would have to slow way down / shut itself off. If they are part of a variety of inputs they drop out as well, reducing the available information. How would you handle that then? If that would have to drop out/slow down as much, you gain nothing again /e: my original interpretation is obviously wrong, you get the additional information whenever the environment permits.
    And for the painted wall. Cameras should be able to detect that. It’s just that Tesla presumably hasn’t implemented defenses against active attacks yet.

    You had a lot of hands in this paragraph. 😀
    I like to keep spares on me.

    I’m exceptionally doubtful that the related costs were anywhere near this number.

    cost has been developing rapidly. Pretty sure several years ago (about when tesla first started announcing to be ready in a year or two) it was in the tens of thousands. But you’re right, more current estimations seem to be more in the range of $500-2000 per unit, and 0-4 units per car.

    it’s inconceivable to me that cameras only could ever be as safe as having a variety of inputs.
    Well, diverse sensors always reduce the chance of confident misinterpretation.
    But they also mean you can’t “do one thing, and do it well”, as now you have to do 2-4 things (camera, lidar, radar, sonar) well. If one were to get to the point where you have either one really good data-source, or four really shitty ones, it becomes conceivable to me.

    From what I remember there is distressingly little oversight for allowing self-driving-cars on the road, as long as the Company is willing to be on the hook for accidents.





  • They do.

    But “all self driving cars” are practically only from waymo.
    Level 4 Autonomy is the point at which it’s not required that a human can intercede at any moment, and as such has to be actively paying attention and be sober.
    Tesla is not there yet.

    On the other hand, this is an active attack against the technology.
    Mirrors or any super-absorber (possibly vantablack or similar) would fuck up LIDAR. Which is a good reason for diversifying the Sensors.

    On the other hand I can understand Tesla going “Humans use visible light only, in principle that has to be sufficient for a self driving car as well”, because, in principle I agree. In practice… well, while this seems much more click-bait than an actual issue for a self-driving taxi, diversifying your Input chain makes a lot of sense in my book. On the other hand, if it would cost me 20k more down the road, and Cameras would reach the same safety, I’d be a bit pissed.