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andrewcchen

HN member
Joined
Sun, Sep 24, 2017, 9:46 AM UTC
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155
Public activity
33 items

About andrewcchen

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Recent public activity

  1. comment
    Comment #45777427

    So like LiveContainer[1] which works around ios's signing requirements [1] https://github.com/LiveContainer/LiveContainer

  2. story
  3. comment
    Comment #40457245

    It's not an e-ink display, but rather a monochrome transreflective lcd. [1] [1] https://www.reddit.com/r/eink/comments/1bk294i/comment/kvx17...

  4. comment
    Comment #27811456

    I'd say they are bad because they aren't very power efficient. There are boards with nrf52 chips that already have qmk support iirc.

  5. comment
    Comment #27218676

    Yes, custom cores in the sense of what apple does.

  6. comment
    Comment #26959165

    The cores don't serve the same purpose as the M1 cores. M1 is optimized for single thread at the cost of die size (and a bit of power). I don't have exact numbers, but say the appl…

  7. comment
    Comment #26839969

    Fairing recovery is not abandoned, they decided to fish them out of the water after a soft landing instead of catching them with a net.

  8. comment
    Comment #26773927

    Digikey pricing is not indicative of actual volume pricing, especially for FPGAs where they are often many times overpriced when buying from distributors. I doubt the board is sold…

  9. comment
    Comment #26538767

    The circulator[1] is an analogous component in rf, it send the incident power from any port down to the next port, so you can take one port to be the bidirectional connection, and …

  10. comment
    Comment #26512003

    The trick to doing smd soldering is reflow. On all budget all you need is a hot air gun, if you put solder and flux on the pads manually before placing the components. With a stenc…

  11. comment
    Comment #22307884

    It takes a combination of software and hardware to get good power consumption. In this case, assuming the author has implemented sleep modes on the microcontroller, it's probably t…

  12. comment
    Comment #22069402

    This is only a cpu core. It lacks the memory controller and peripherals that make a SoC work. It will probably never make its way into a chip tapeout.

  13. comment
    Comment #21771332

    In recent years the node names don't correspond to any physical dimensions of the transistors anymore. But since density improvements are still being made, they just continued the …

  14. comment
    Comment #21559907

    It's in a QFN not QFP package

  15. comment
    Comment #21239377

    mitigations=off is all you need on a recent kernel

  16. comment
    Comment #20900806

    I'd love to know what makes this theorem so useful, but I doubt I will understand much considering this is in an area of math I know almost nothing about. I imagine it must be very…

  17. comment
    Comment #20467163

    In a previous post he said it's 8 years old

  18. comment
    Comment #19891656

    > Bitcoin appears to have greater staying power than most nations and currencies in history. I would not make that statement so soon. Bitcoin has only existed for 10 years. Most na…

  19. comment
    Comment #19643943

    The booster's trajectory targets offshore or away from droneship in case landing burn fails. The landing burn brings the booster onto the landing pad. See CRS-16 where the booster …

  20. comment
    Comment #19315586

    There's a typo in launch.sh that breaks when you try launch in debug mode > "{$DEBUG_PORT}"

  21. comment
    Comment #18834933

    For rendering yes. For video decoding no. Chromium needs a patch to use VA-API[1]. [1]: https://wiki.archlinux.org/index.php/Chromium#Hardware_video...

  22. comment
    Comment #18536562

    The title is misleading, they have most likely only been dead for a few months since their bodies were found still decomposing.

  23. comment
    Comment #17253580

    You can take screenshots by plugging a usb stick into the scope

  24. comment
    Comment #16951447

    Most computers have an Embedded Controller (with integrated flash) that does a lot of motherboard/system specific stuff like power management, flashing leds and even scanning the k…

  25. comment
    Comment #16917435

    Smallest feature size no longer correlates with transistor density in recent years. So manufacturers just use the number to convey increases in transistor density. See https://en.w…