Author Archives: pappp

Churchill Jasmine

Complete
I’ve been fairly in to Longboarding this spring, and decided to pick up another board, set up to contrast with my current big surfy cruise/carve deck. I wanted something lower, with a bit of flex, easier to break out wheels, and a less popsicle-stick shape. The intention is for variety, for easier to pushing, and to improve my technical riding. It will also be nice to have a deck to lend out to get friends hooked.
Details of the board are attached to the images of the gallery after the fold. Fair warning: they are rather high resolution. I’m sure my advisor would complain about the superimposed images with ill-matched white balance and squirrely focus, but I’m shooting with my phone and making automated fixes only in the gimp, so they will do. The WordPress gallery software also seems to be a bit confused by the non-4:3 shapes.
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Churchill Mfg. 180mm RKP Trucks

I’m in the process of putting together a second longboard – there will be more posts about that in the next couple days, but I wanted to put up some detailed pictures of the Churchill Mfg. 180mm 50° Reverse Kingpin trucks, since there were none to be had when I went looking. The ineterwebs are all abuzz about how inexpensive and decent they are, but I couldn’t find any side-by-side comparisons with an established brand when shopping. To that end, there are some comparison shots with classic Paris 180mm 50° Reverse Kingpin trucks in the gallery. I’ll also note that they look an awful lot like Stealth Trucks without the raised sections on the triangle portion of the hanger.

Some notes from the pictures:

  • They ship with speed rings, which is both a nice touch and possibly important because the end of the hanger at the axle isn’t faced.
  • In fact, there is no sign of any post-casting machining whatsoever. The finish is pretty good for a casting, though – they may be sandblasted or tumbled or somesuch.
  • The Churchills are about 1/8″ higher than Paris’, but that may just be a difference of bushings. They look the same height in the pictures because the Paris’ are mounted on 1/8″ shock pads. The Churchills have the stock bushings in, and the Paris’ have 81a Venom standard barrels board-side and 85a Khiro barrels street-side (which should probably be the other way around).
  • The bushings they ship with are cherry red translucent 92a double-cones of unknown origin. They kind of remind me of the ones Paris’ come with, which likely means they will be replaced soon, but I’ll give them a ride before passing judgement.
  • The bushing seats are shallower but tighter than the Paris’, I’m not sure how that will translate when riding.
  • The kingpin is an absolutely standard carriage bolt, 3/8″ – 24tpi, 1/2″ hex head, 1″ threaded length, 2.75″ total length. I suspect it could be replaced from stock at a home improvement store.

Conclusion: These trucks are $20+S&H per pair, and appear to be functionally equivalent to the classic ~$50 sets from Paris and Randall. I haven’t taken them out riding yet, but inspection says they are extremely comparable. I’ll have a more informed opinion after some riding, and only time will tell if the axle/kingpin steel is as good.
Edited to add disassembled picture and note from disassembly.

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Exploit Exercises is magnificent: nice pre-packed virtual machines with a set of known vulnerabilities to learn various classes of security problem from. Fuzzing you own machines is never any fun, because the likelyhood of finding anything good is infinitesimal, and … Continue reading

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DARPA and the Makers

So there has been a spat going on, where Mitch Altman is parting ways* with other important folks in the Maker movement over concerns about their accepting DARPA money for STEM education. The organization accepting the grant is largely being represented in the arguments by Tim O’Reilly.

Altman and O’Reilly are some of the more substantial organizers of hacker/maker types, and I generally have a great deal of respect for their opinions and activities… but I don’t get what the DARPA fearmongering is about. As far as I can tell, the only problem is that from 1972-1993, and again from 1996 on, the U.S. Government’s technology investment agnecy has had “Defense” prepended to its name out of political necessity. I suppose part of my befuddlement is that the ethics of such things have long been carefully thought through in academia, so seeing the non-academic maker types fret about it is novel.

First off, let’s talk about DARPA. Go read the mission statement. They are tied to the DoD, but their job is to develop technology. Basically, it’s in the United States’ strategic interests to make sure domestic technological advancement keeps pace with or exceeds that of the rest of the world. Strategic does not mean military, I would like to think most of learned this, if not in school, at least from playing empire-building games. The MENTOR program this grant in in particular comes from is to fund education that will nurture future engineers and scientists, to support the goal of advancing science and technology. This is fundamentally the same organization that funded most of the major advances in computing (See Project MAC, MULTICS, and the Internet), even though they grew a “D” in their name, and were founded out of fear of the Soviet’s technological capacity. As it turns out fear of annihilation is a great way to get reluctant politicians to think about the future. DARPA isn’t the armed forces, they’re the US government’s way of investing in technology.

Next, let’s take a little dip into the philosophy of technology. Once some useful bit of technological progress has been made, it won’t be long until EVERYONE has access to it, such is the nature of history and technology. More cynically, the U.S. Military-Industrial complex will do whatever they want with any technology they dredge up, whether or not they paid for its development. Arguments about the intention of technology are kind of ridiculous, and yes, I’m aware that that makes my Utilitarian ethical precepts show. To use one of my favorite examples instead of going into a nebulous argument, the same cheap sensor and storage technology that makes mass surveillance possible also allows us all carry a recording device with which we can watch the watchers and disseminate our findings (so long as our rights to record police stay intact). The difference between menacing and empowering technology is entirely in its application, and the creators, much less the creators’ financial backers, generally don’t get a whole lot of say in the matter.

Finally, let’s talk about practical matters about politics and money in the United States. First, if you’re involved in the technology industry, you are already complicit. Like so many things in the modern world, the technology industry is, to a distressing degree, driven by the military industrial complex. We talk about the need for funding NASA as a matter of driving the leading edge of science and engineering so that technologies trickle down into our every day lives. The same applies to defense; World War 2 and the Cold War were arguably the primary technological drivers of the 20th century. I tend to think of DARPA, like the DoD operated national labs, as “The conservatives won’t let us fund science, so we call it defense and do it anyway.” Yes, it is reprehensible that “Education” and “Science” will get cut, but “Defense” won’t. Yes, some immediate military technology comes out of DARPA programs, but whether or not we are in a decade with the “D” prepended, it has always been about advancing technology. The principle here is that the U.S. Government is offering up money to advance STEM education from a fund that looks enough like defense to remain funded, and it is even better that its use is being directed by people who’s ideas about STEM education are agreeable, to O’Reilly, to Altman, and to people like me.

I’ll even admit there is a little bit of self-justification in here, but we’re all being a little ridiculous: Mitch made his announcement, most likely from some kind of Linux box (Which is a developed clone of a cut-down version of an old ARPA project), on the Internet (which is based entirely on the fruit of another ARPA project).

So, my opinion? Let’s celebrate that a little piece of the DoD budget is going to paying makers to teach future makers instead of fighting wars of aggression on flimsy pretenses in random oil-rich nations on the other side of the world. It surely isn’t perfect, but it is a step in the right direction.

* A bit of my own ideological weirdness: most of the argument took place on Facebook, which I think is sort of an embarrassment to our society, so the link to the original source is indirected through Slashdot.

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A Single-Image Review of the Windows 8 Consumer Preview

The default desktop background/log in image is the ugly 8-betta. Thanks to the GIMP and general orneryness for the flip.

This, even more than the DP, is a media-consumption OS – either we are watching the end of general purpose computers, or it will be holding the “Every other Windows release is a miserable failure” pattern. Touchscreens are horrible interface devices where other options are available, and optimizing for them makes horrible interfaces.

Edited to switch to a deader version (old version) and add source XCF with the background edges fixed and all the objects on separate layers for other’s editing pleasure.

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Watch as a Phone Stand


I do this all the time and didn’t realize it was unusual until someone pointed it out the other day. I wear a somewhat clunky metal watch (to use as a grounding strap) and it makes a pretty solid portrait orientation phone stand. Might be a useful trick for someone else.

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Google Exit Plan

I started writing this as notes for my own use, and wasn’t really planning to post it publicly. However, I didn’t find any comprehensive google exit plans that were suitable for people in my position, and it seemed like an interesting area for discussion, so up it goes.

While making my regular Google backups (detailed below in “Backup ALL the Things”) over the weekend, I decided it was time to update my plans for bailing out of google’s services if necessary, and discovered that there may be superior alternatives to some of the services I’ve been depending on. Google’s vast infrastructure, development resources, ubiquity and integration have tended to make them better than self hosted options. The fact that they are a single party who has thus far been generally responsible with user data makes them more attractive than other hosted solutions. Both of those situations are subject to change.

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When the Internet is Stupid

This would have been a few-line comment on G+, but I’m noting some things that I’m not comfortable saying without sourcing, and google plus’ stupid one-link-per-post system makes it impossible to do that. This is all, at the very least, uncomfortable to think about.

I’ve been watching the reddit/kiddie porn kerfuffle today, and it is a nice framework to think about some recurring social issues. Just to put a summary and disclaimer up front exploiting children is unequivocally bad but that is never what the discussion ends up being about.

It makes a fabulous internet microcosm example of the usual course of pedophilia accusations: There are some distasteful (but, apparently, for the most part not illegal) things posted, someone notices, and it immediately turns into axe-grinding, bandwagoning, and trying to shut down an entire site because OMG think of the children irreparably harmed by possibly sexualized images of possibly minors. I’ll go ahead and note that there was some genuinely bad shit showing up, but the standard “take down anything that is illegal in the jurisdiction our servers are in” mechanism that has to be handled anywhere there is user submitted content should have been catching that – and justly needs to be fixed anywhere it wasn’t.
The fact that SomethingAwful is leading the charge, and is a for-pay internet community (notably, one that used to be a big hub of ‘net culture and …isn’t very relevant lately) even gets the ubiquitous “using accusations for ulterior purposes” aspect in.

The related discussions are rolling into the various corners of
Legalizing child pornography is linked to lower rates of child sex abuse and Australia banning pornography featuring small-breasted women as CP messes (both from 2010), and the whole “why the fuck is Toddlers in Tiaras OK” issue that remind us how stupid the whole area has become.

It also makes an interesting study about legality and the Internet. Pretty much every part of the Internet condones things that are regionally illegal, be it political speech, prohibited drugs, copyright infringement, various flavors of hate speech, or pornography. Different sections of our global society feel differently about all those things, and calls for selective condemnation tend to lack the self-awareness to note that the same moralizing applied to the parts they approve of would be reprehensible. To pick the easiest example: the United States cheering online political speech and social modernization/liberalization in the middle east during the “Arab Spring” while advancing Internet censorship in most other circles.
The fact that international law still can’t handle telecommunications too often makes concerns about legality of publicly visible content into a race to the most restrictive – or at least race to the biggest bully – situation. I have no idea what the solution to that is, but I’m becoming increasingly convinced that it will have to be a technical solution with resignment to a certain acceptable level of transgression by all parties.

Once again, I hate how Richard Stallman keeps being right (I’ve seen better versions of the point, but can’t find a link) about horrible things.

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Higher Education Policy

This came out of a discussion on plus about an article I shared, but Plus isn’t really a suitable venue for the long-form response. The basic premise of the article, like so many similar articles, is that we need to impose continuous evaluation, and tie incentives to the results. A great many well-qualified people (preferred example: Diane Ravitch) think that model is wrong, and has already done a great deal of damage, and I tend to agree with them. (also note, the choices of some points and examples here are oriented for people with known similar experiences). This is also the first time I have set up this whole argument at once, so I’m sure there are holes you could drive a truck through in at least some of my claims, but I’d like to try for discussion’s sake.
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Sublime Text 2

The idea of shelling out $60 for a text editor in this day and age is absolutely absurd, but I’m seriously contemplating doing so in the near future, because Sublime Text 2 appears to be the answer to all the things I hate about text editors. I’d been pointed at it before, but don’t like to increase my dependency on proprietary software, so it took a couple passes of seeing it do things right before I was willing to look seriously. But oh how it does things right. I’ve been using the uncrippled demo version for a couple days, and am seriously impressed.

It has all the basic features of a programmer’s editor. It can open multiple files (it uses a browser-style tabbed interface). It syntax highlights almost anything, does intellitext-style autocompletion on pretty much everything, and has shortcuts for context-aware section jumping (brackets/functions/classes/chapters, etc.) and the like. It does all this while remaining fast (startup/execute actions) and responsive (UI), and lives in about 8MB of private RAM — which is to say it is lighter than some of the command line editors I see people using. It also appears to have an excellent pluign framework, because there are a great many available.

One of the things that most frusterates me about programmer’s editors is that they usually do wrong things with shortcuts ingrained into my fingers by every other program I use, which is unacceptable. ST2 uses “modern GUI” keybindings – C+x C+c C+v (cut/copy/paste) all work like they should, as do C+z (undo) C+s (save) and browser-stye tab management like C+w (close tab). Furthermore, all the key-bindings are editable both per-user, and system-wide, as a straightforward format text file accessible from the UI.
While talking about keyboards, I am apparently unusual in that I ride my navigation keys, and ST2 not only binds them, it binds them better than expected. One tap to Home takes you to the current tab level, two taps to the actual beginning of the line. Del deletes, Shift-Del deletes whitespace until it hits text or newline. PgUp/PgDn jump up/down a page, Shift-PgUp/PgDn jump to the top and bottom of the document. The mouse is bound like any modern program, such that selection and scrolling work correctly, unlike most command-line based tools. At least on Linux, both the select and middle click and select, right click, choose from menu copy/paste mechanisms work correctly. It even supports multiple selection and column selection in reasonably straightforward ways.

Another thing that drives me batty about editors is modality. Not only do I not want modes in a text editor that do things other than accept text input, I don’t want modal dialogs that can pop up and eat my text. ST2 has neither (Except for the About window, which is a modal dialog for no apparent reason). Things that might happen in modal dialogs instead happen in either a nonmodal dialog area that appears at the bottom of the window, or (for text-oriented operations) in a input-accepting bar at the top of the window. The top bar does a variety of amazing things, including acting as a launchable, hinting search of the command reference, so if you think of a feature you want, it will tell you if it is available and if there are currently key-bindings for it, or let you use it directly from the search. Imagine Firefox’s awesome bar done right.

It can hook most common build systems (Makefiles and the various language-specific tools).. and like everything, the mechanism is pluggable, so simply dropping a LaTeX plugin in the appropriate place got me C+b to spit out a PDF from my LaTeX document. It detects if these are relevant based on the file and directory, but the automatic choice can be overridden (for cases where you have a Makefile that also generates LaTeX formatted documentation or the like). There appears to be a project managment system that I haven’t even messed with yet, but it apparently works with a pair of human-readable dotfiles in the directory, instead of demanding a particular layout and spewing files like most IDEs.

The search mechanism is also exactly what I always want: it accepts regular expressions, as well as case/whole word switchable simple queries. It does this with obvious controls for direction, and supports highlight all. It also does it across files, with straightforward control over which files are included. As an incredible example of it just being right, a day after I started using it, I needed a “replace preserving case” feature to modify a LaTeX document… I didn’t expect it to exist, but went looking as a “Wouldn’t it be cool” item since it seemed to be wish-granting, and it was not only there, but in the first place I looked on the replace bar – and it did exactly what I expected.

It does some neat things I haven’t seen before. The most obvious of these is that by default it has a tiny live view of the whole document next to the scroll bar, with the visible section highlighted, which is surprisingly useful for navigation. Furthermore, it supports almost every feature I’ve liked from the boneyard of rejected editors. Real-time underlining spell check? Present. Multiple views (ie. two simultaneous views into the same buffer which are kept mutually consistent)? Present. Split-window editing (think Screen/tmux)? Present. Code folding? Present. Bookmarks? Present. Case mangling? Present. Scope marking? Present. I keep finding amazing things, and it isn’t like vim, where you keep finding things because the learning curve is asymptotic. I haven’t even messed with the scripting and macro features yet.

This thing is impressive.

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