tkanarsky

9 ms·

1. 61.▲
   by tkanarsky 4y ago

   So if I recall correctly from HS chem, iron is being reduced in this case by the carbon in the coke. From a cursory glance at the electronegativity table, iron is at 1.83, carbon's at 2.5 and hydrogen is 2.1. Higher electronegativity =
2. 62.▲
   by tkanarsky 4y ago

   Tiny nit: the labels on the Arduino headers are z-fighting when zoomed out -- maybe offset them a bit to counter loss of precision?
3. 63.▲
   Show HN: Export ChatGPT conversations as GitHub gists(github.com)

   1 points by tkanarsky 4y ago|0 comments
4. 64.▲
   by tkanarsky 4y ago

   Edge Impulse does everything you described. It has a really nice web UI that lets you collect and annotate data, extract features, train a model, and bake it into a microcontroller image for inference. It supports a good chunk of microcontr
5. 65.▲
   by tkanarsky 4y ago

   Just like Wile E Coyote running off a cliff with delayed gravity:)
6. 66.▲
   by tkanarsky 4y ago

   Agh, I meant to say microcontroller. But you're right, microprocessor is too broad of a term these days when it can refer to both a top-flight AMD workstation chip and a tiny stm8. Nanoprocessor sounds about right for the latter :)
7. 67.▲
   by tkanarsky 4y ago

   Probably not, unless you're willing to stretch the definition of 'real time' or 'image'. The classic Arduino Uno processor aka the ATMega328 does about 1 million 8-bit instructions per second per MHz of clock[0]; th
8. 68.▲
   by tkanarsky 4y ago

   How did you get started in this line of work?
9. 69.▲
   by tkanarsky 4y ago

   If you're in the LA area the W6TRW swap meet in Redondo Beach is fun to visit, iirc it's the last Saturday of every month in the morning. Definitely show up early, the good stuff sells quick :)
10. 70.▲
    by tkanarsky 4y ago

    This is simply unusable. If I type `sl`, I expect an animated choo-choo train to appear, not a newfangled Git client! /s :)
11. 71.▲
    by tkanarsky 4y ago

    Recommend reading Daemon and Freedom™ by Daniel Suarez. It describes a reasonably plausible transition to a society managed by an impartial AI.
12. 72.▲
    by tkanarsky 4y ago

    Several nuances: "Controlled reentry" isn't necessarily synonymous with "booster recovery". Most rockets have a way to deorbit the upper stage once its job is done, either by firing the main engine retrograde, or us
13. 73.▲
    by tkanarsky 4y ago

    A lot of them sound surprisingly similar to IFR waypoint names. Try guessing which one is a sketchy Amazon brand and which one is a waypoint name: WEXIM PEIPU SEMRE MIADY YEAKE (Answer: WEXIM and SEMRE are waypoints, the rest are brands) I
14. 74.▲
    by tkanarsky 4y ago

    $2.50/mo is the lowest, but it's eBay exclusive iirc. Gives you something like 200mb of data. (Which coincidentally makes it one of the best deals for a small IoT project sim like a GPS tracker or remote weather station or whatnot
15. 75.▲
    by tkanarsky 4y ago

    Thanks for the pointers! I'm very much a noob, this is really the first formal class I've taken on the topic. Are there any books, papers, or websites that stand out as particularly useful for grasping these topics?
16. 76.▲
    by tkanarsky 4y ago

    yep, I'm currently taking a systems/signals course and it was incredibly illuminating how a lot of common image and sound filters -- edge detection, low and high pass filtering, equalization, etc -- boil down to the convolution of
17. 77.▲
    by tkanarsky 4y ago

    TL;DR: He asked nicely
18. 78.▲
    by tkanarsky 4y ago

    Thanks, what a cool demonstration of WebAudio! Time for my weekly re-listen of space_debris.mod :)
19. 79.▲
    by tkanarsky 4y ago

    I'm a fan of WriteFreely [0] as a no-frills blogging platform. So far it's had negligible resource use, and I like that it looks like a stripped down Medium or Substack without the social features. It takes Markdown formatting so
20. 80.▲
    by tkanarsky 4y ago

    Humans have to be rebooted at most every 2 days to avoid misleading auditory data among other things.
21. 81.▲
    by tkanarsky 4y ago

    We should just fly over there at night and put a blanket over it
22. 82.▲
    by tkanarsky 4y ago

    Based on the photo, it seems more of a showpiece than an actually practical way of filtering large quantities of air. Those bubble columns are at most a few liters of air per minute -- not much more than your usual aquarium pump -- when lar
23. 83.▲
    by tkanarsky 4y ago

    Their Pinecil soldering iron is an awesome piece of kit. I just bought the v2 the other day to replace my v1. It's honestly head to head with the Hakko irons in the lab in terms of power and temperature control, and the v2 has support
24. 84.▲
    by tkanarsky 4y ago

    So it's good when we use targeted ads for political means, but it's Evil Incarnate when they use them. Understandable
25. 85.▲
    by tkanarsky 4y ago

    Check paperswithcode's State of the Art leaderboards for the tasks I care about (sound classification, style transfer, etc)
26. 86.▲
    by tkanarsky 4y ago

    SomaFM Groovesalad or Defcon Radio
27. 87.▲
    by tkanarsky 4y ago

    That thing is sweet. If I recall correctly, the issue is that the motor type he used is no longer being produced (?) so a redesign is necessary. I really love the idea of having infinite possible UX choices in a single knob -- for example,
28. 88.▲
    by tkanarsky 4y ago

    If you have a Linux PC with a TPM, you can use https://github.com/psanford/tpm-fido to create and "plug in" a virtual USB WebAuthn key whose secret is irretrievably stored in the machine's TPM. This effe
29. 89.▲
    by tkanarsky 4y ago

    https://ciechanow.ski/archives/ Fantastic writeups and interactive animations; iirc, he does the WebGL by hand! His website gives me the same feeling of discovery that I got at the Exploratorium as a kid.
30. 90.▲
    by tkanarsky 4y ago

    To be fair, it's advertised as a "bioweapon defense mode" and not a "chemical weapon defense mode".