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jcrabtr

HN member
Joined
Mon, Nov 18, 2013, 8:05 PM UTC
HN karma
148
Public activity
23 items

About jcrabtr

https://emergentdevices.com

Recent public activity

  1. comment
    Comment #22117783

    Here's a speech of Berry's, entitled "Local Economies to Save the Land and the People," that serves as a quick introduction to his thinking. http://inthesetimes.com/rural-america/e…

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    Comment #22117762

    I just finished "The Art of Loading Brush," which makes many of the same arguments with some modern updates. Highly recommended.

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    Comment #17388560

    The killer app for open-source hardware is scientific components and apparatus. It improves accessibility and repeatability, and can deepen your understanding of experimental resul…

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    Comment #17324585

    My favorite from python are decorators, especially the built-in ones like @property. They can improve readability immensely, so the don't feel extraneous.

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    Comment #16875103

    There's a huge number of people involved in the design of the rpi. The antenna is a great example of a subsystem designed by a separate team; another is the new PMIC for the 3B+[1]…

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    Comment #16874569

    According to [1] (which has more info on the antenna design), the resonant cavity antenna was designed by a company called Proant [2]. I remember reading the the antenna is the sam…

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    Comment #16777000

    Seconded. While Art of Electronics is the classic text, this one is a bit more accessible. It has less depth but more breadth, and is less intimidating because of it.

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    Comment #16718839

    Right. Why play an acoustic instrument when we can accurately synthesize its sound, or use a tube amplifier when we could use a digital modelling amplifier that perfectly simulates…

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    Comment #16541206

    Cool project! This reminds me of an idea that you're awfully close to: optimized small-volume part kitting. I can order boards from OSHPark and stencils from OSHStencils, but figur…

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    Comment #15994407

    "[T]he stuff I was making was really weird, because I didn't have real-world, existing examples to work from. I mean, they were around, but I guess I wasn't interested enough. It j…

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    Comment #15098465

    For personal finance and investing, the Bogleheads forum ( https://www.bogleheads.org ) ticks all the boxes. It definitely has many helpful, knowledgeable participants. Since it's …

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    Comment #14838006

    The craft fair in Boyne over the 4th of July is a good place to buy trinkets made with Petoskey stones like the ones in the shape of the state that someone else mentioned. We didn'…

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    Comment #14837137

    Fun fact: Claude Shannon, father of information theory, was born in Petoskey, MI [0]. He grew up not far away in Gaylord, MI, where you can now visit Claude Shannon park [1]. [0]: …

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    Comment #9029448

    It's not how simple the product is or whether it's open source that determines regulatory requirements, but what it is and where and to whom you're selling it. For a quick primer o…