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Cake day: July 1st, 2023

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  • SzethFriendOfNimi@lemmy.worldtoGaming@lemmy.worldAt least it was unique
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    4 days ago

    You’re right.

    The trays had a groove for a CD. So placing it in the groove it would work because its edges would always fall into that groove correctly all the way around the tray.

    This, however, wouldn’t work on a slot loaded drive since they worked by having a set of arms with rollers that grab the edge of inserted disc and another arm with a roller that pushed it the rest of the way in from the opposite edge when it’s inserted enough.

    You can see how this worked here on a DVD drive that uses the same setup. https://youtu.be/qi3v7X6BpAA

    So there’s only ever 3 slim points of contact which is fine as long as it’s a circle. Yet the irregular shape here would cause it to get partially in and then pushed by the arms into the edge/internals of the drive.










  • One thing to consider. When the stocks that are part of a mutual fund drop… then your retirement contributions will be buying them on sale.

    Assuming the mutual funds are spread out to minimize risk (1 of the funds companies folds, etc) overall you’ll be better off long term.

    As you age you’ll start moving your investments to more stable options (talk to a financial adviser on the specifics for your plans). This way they that won’t benefit from huge gains but also are a lot less likely to be wiped out by massive drops.

    In the meantime look at how your funds are doing over time. Not even year to year but maybe every 2 or 3 years.











  • Klipper is a different beast but once you get it going it’s leaps and bounds ahead.

    No more compiling and editing firmware. Since the Klipper firmware itself is built and deployed to the board so the logic of what features, pins, etc can be controlled by your pi.

    E.g. the board is no longer the “brains” of the printer but the brain stem. Where the brain (the pi) tells it on pin A “tell this stepper motor to turn this”, on pin J “tell the heater to cycle on” etc.

    Basically you download Klipper, look at a printer.cfg for the board you have, and then just use that as a starting point.

    Here’s the generic printer.cfg for your new board

    https://github.com/Klipper3d/klipper/blob/master/config/generic-creality-v4.2.7.cfg

    The real power comes from having the option to use macros for things like START_PRINT and END_PRINT.

    For example, when I added a Nevermore fan on an skr mini e3v3 board I just had to wire it, find the “pins for the plug” on the board and then add the necessary config change.

    Didn’t work? Comment it out and restart firmware and you’re no worse than it not being there. Adjust, restart, and go.

    So where I’d avoid a marlin update because of the hassle of building and updating I now just check for updates, ssh in and build it with a command and update the board over USB.

    And that’s just to update the Klipper firmware on the board for whatever fixes/changes are needed for Klipper. For things like new macros or existing items changed around you just update the config and “restart” and it does the rest.

    The only thing that you lose with an ender is the screen. Their screens aren’t dumb… they have their own weird firmware. Personally I just use the website and now the moonraker mobile app to control everything and I don’t bother with a screen at all.