1. Landscape drafting symbols in Inkscape

    Thu 01 August 2013

    I've put a lot of perennials in my yard's landscape, and like to keep track of them all in case I want to add or replace any plants. I used to have a sketch on paper, but that's too old fashioned and hard to maintain. I'm also too cheap to …

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  2. Circuit_macros preview app for Mac OS X

    Sun 28 April 2013

    This is a little python app I wrote up to provide a sort of GUI for the circuit_macros package. Circuit_macros is an excellent way to draw professional-looking electrical circuit diagrams, but it takes a series of steps to compile the code describing a circuit into a finished image. This app …

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  3. Splashing Photography with Raspberry Pi

    Mon 15 April 2013

    [UPDATE 06-29-2014] This technique has been refined and even better photos are in this post

    These are splash pictures taken using a Raspberry Pi as a controller. These aren't your typical water-dripping-into-a-pool photos, they're actually made by placing a drop of liquid on a speaker and blasting it with sound …

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  4. Winter storm time lapse

    Sun 24 March 2013

    Time-lapse video of winter storm Virgil on 24 March, 2013.

    Make sure to click-through if you want to see the full-resolution version. The video was made using a Nikon point-n-shoot camera tethered to my laptop, and gphoto2 to capture and download one image every minute. Entire time was about 4 …

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  5. Matplotlib hatch spacing

    Mon 11 March 2013

    Matplotlib is capable of drawing polygons with a hatched pattern, such as the one below, using the patch function. The key is in the "hatch=" parameter, in this case it is '/' to add diagonal lines. According to the documentation it can also be one of these:

    / \ | - + x o O . *
    

    Add …

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  6. Circuit_macros vs. circuitikz

    Sat 25 August 2012

    While there's a number of software applications for building circuit diagrams, they tend to focus on running fancy simulations, while the schematics themselves are ugly to look at. So when writing papers (and ECE201 exam problems) where nice looking diagrams are important, something specifically made for quality drawings is required …

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  7. Transit of Venus

    Wed 06 June 2012

    Venus made its historic transit across the sun on June 5, 2012. Using binoculars to project the sun's image onto a screen, I was able to get a number of photos of this event!

    Gallery

    We start by projecting the sun through binoculars onto a piece of white posterboard. First …

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