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

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  • I have written a more detailed comment on it before, but 2d printing is much more technically complicated than 3D printing, and the resolution is literally an order of magnitude difference (0.2mm vs <42um) and the printer has to print full color on any surface with microdots in a very very short time. People would throw the printer out if it took 10 minutes for a single paper like a large first layer takes in 3D printing.






  • ICs, passives, and transistors. /thread.

    There are 2 big IC designers in Europe: Nordic and ST, but I believe all of their production is in China and Taiwan. If trade crashes, we have the IP, but no way to manufacture at scale. IMEC here in Belgium has 4 small fabs, but there isn’t that much else and the workforce is expensive as fuck which is why they do research IC’s almost exclusively.

    We have a lot of camera IC designing in the EU also, but they are almost all fabless. Luckily we have ASML who know everything technical about IC manufacturing.

    We have less knowledge on how to actually mass produce ICs anymore efficiently even though we create all of the tools and methods here because everything is done in the east that will see any volume production. PCBs and assembly are already 2-3x as expensive.

    In my opinion, we need huge subsidies to get component and IC scale fabs here.


  • The few things I don’t like about flatpaks (which become a problem on atomic distros that use almost all flatpak by design):

    • Some types of embedded development is essentially impossible with flatpaks. Try getting the J-link software connected with nrftools and then everything linked to VScodium/codeoss

    • Digital signing simply doesn’t work, won’t work for the foreseeable future, and is not planned to get working,

    • Flatpaks sometimes have bugs for no reasons when their package-manager counterparts don’t (e.g. in KiCAD 8.0, the upper 20% or so of dialog boxes were unclickable with the mouse, but I could select and modify them with the keyboard, only the flatpak version)

    • The status on whether it is still being actively developed or not (at least I hear a fair amount of drama surrounding it)

    But besides those small things, it seem great to me.


  • How it works for some people is the chest strap would be detected by the fitness app (polar, strava, run keeper, opentracks, etc…) and then the activity would be recorded with the chest strap. Then the activity is either synced with google health connect or google fit, apple health, etc… So it shows up in your watch app overview.

    “Smarter” smart watches I think can also connect themselves to the chest strap instead of the phone and the heart rate from the chest strap would “override” the watch’s that it then sends to the app, so you don’t have to sync with an external app. Though there might be more problems with compatibility even though all chest straps should use the standard Bluetooth “Heart Rate Service” to be completely interoperable.