Category Archives: General

Google is Getting Awfully Evil

TLDR; I no longer consider google trustworthy, Tiny Tiny RSS is a suitable, self hosted, replacement for Reader.

Until this week, Google had managed to convince me their services were trustworthy – more trustworthy than self-hosting – which is quite a feat , since I don’t tend to do well with faith in any context. Killing reader after it drained the rest of the RSS aggregator market took care of that illusion. Kicking the ad blockers out of the play store (on the same day) after Android had become the dominant species, and it no longer mattered that ad blockers are required to make the mobile web experience tolerable, and intentionally breaking Jabber federation later in the week just underscore the point.
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Adventures in 3D Printing

The MakerGear M2 3D printer the KAOS lab ordered arrived last week. I am thoroughly impressed with the machine and how little fussing has been required to get decent prints out of it.

I’ve been pushing annotated pictures of our adventures with the M2 to a G+ album, because the auto-upload from my phone is too good to give up, even if the G+ album manager sucks. Take a look to get a taste of our massive new distraction.

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Pharoah

Pharoah_Final_Crop

We had to put down my parent’s ~19 year old cat, Pharoah today. We got him as an young adult, and have had him for about 16 years, so he has been a presence for more than half my life.

When we got him, he had been returned to the pound for unspecified reasons. We picked him because of his personality – he was remarkably docile, and very attentive to humans, traits that, as we hoped, he imparted to a number of less-social housemates over the years. Shortly after we got him, we noticed he looked a little odd and didn’t clean himself. It then became clear that, as they started to grow back, the intermediate owners had clipped his whiskers short and, because it came off when we bathed him, dyed his gray and brown undercoats black. Even after such a terrible second owner, he had abandonment issues for his entire life. He was an indoor/outdoor cat for most of his life, and made friends with all the neighbors. Whenever someone was upset on their porch (which, in a neighborhood full of college students, happens rather regularly) he would go try to console them. He somehow communicated to a family across the street that he wanted a water bowl with ice in the summer, and got them to oblige. Neighbors worried when they didn’t see him for a couple days.

In another personality-establishing story, the first time he was allowed outside after we got him, he climbed a tree and couldn’t figure out how to get down. We set up an extension ladder to help him down, but he decided to jump instead and broke his toe. It was December, so the vet wrapped his leg in green, red, and white bandages, and told us he would remove it in a matter of days. Three weeks and a drive up to Wisconsin with us to visit family later, the cast had to be cut off. He always liked decorations: Large collars. Ribbons. Tags. Bells. He would be visibly distressed for hours when he lost one, and would sometimes bring things that fell off back to be reattached. Hurt feelings could be fixed with another bit of ribbon tied to his collar. As he aged, the wear from his preference for elaborate collars gave him a bald spot on the back of his neck, but nothing could be done because we couldn’t take them away from him.

Near the end, his never-terribly-sharp senses had dulled to the point where he didn’t always know where he was, and he had lost partial control of his hindquarters, but he hung on, enjoyed himself, and made the resultant messes until it got so bad he was unable to perform the most basic acts of catdom, as is the prerogative of old pets.

He was the most human-centered cat I’ve ever encountered, and will be missed dearly.

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Shapeoko: Part 5

SH6-1
This was originally posted as Shapeoko: Part 6, because I apparently can’t count.

A while ago I ordered a 300W ER-11 DC spindle kit from China to install in my Shapeoko. I finally got to the post office yesterday (stupid recipient-must-be-present shipping) to pick it up, am impressed with the whole process. Most of this post is about the spindle, there is some more belt tensioner tinkering down at the bottom.

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Spring 2013 Impressions

Since I’m in the habit of posting about classes I take at the beginning and end of the semester, and often find something interesting when I look at them later, some quick impressions for courses I’m involved in for the Spring 2013 semester.

Teaching: CS275: Discrete Mathematics
I did this last semester, but under a different primary instructor. I again have pretty much free reign over the recitation period for an hour a week, but this time I do get to do a little bit of new material instead of just examples, and the suggestions on this I should cover are shorter and less specific. I’m more comfortable with the material having done it recently, and my classes seem a little more lively, so it should be a little more fun this time around. That said, doing the same lesson twice back-to-back is slightly more demanding than with a gap, and it is very easy to forget what you did with each group. I’m balancing being a little less organized in the first section with tending to run out of time in the 2nd, so I think they’re getting similar coverage, although the second section is probably having more fun.

Taking: GS650: Preparing Future Faculty
This is a two credit hour, once a week evening course for graduate students who think they might end up in academia. I’m building up a pile of technology-related degrees, have a deep well of contempt for the tech industry, and like teaching, so that sounds right. It actually seems like it will be more useful to me than I expected, in addition to being mostly composed of reading the appropriate news streams, listening to experts talk, and reflecting on both, which is basically what I do with myself anyway.

Taking: LIN511: Introduction to Computational Linguistics
I can talk about how I’m taking this because I thought it would be good for me to look at the other kind of language tools, and how my interest in the cognitive science aspects of computer systems covers it, but I’m really just taking it because it sounded interesting, no one told me I couldn’t (and in fact all the appropriate people encouraged it), and why else have I ever done anything, ever? There is one other CS student in there, and about 34 mixed graduate and undergraduate linguistics students, so my perspective is certainly the minority perspective, although the instructor came to linguistics from computing (and is hilariously British). I came in expecting to need to self-teach a lot of linguistics material, but talking to my classmates, they seem to be having to work as much on the linguistics aspects as I am, and having trouble with the computer parts, so I guess I’m ahead? So far the bulk of the assigned material has been structured manipulation of character srings (Using DATR, which is basically a generic string class system implemented in an ancient dialect of Prolog…), which is for me mostly a good exercise in remembering the OO way that many CS folks view the world. It is interesting, and I’m not suffering, so we’ll call committing to this whim a good choice.

I’m also still not rid of my MS project. I’m deeply tired of it at this point. I’m working to arrange the thing I would like to be working on as a PhD while I continue to try to clear out the parts of the MS project that have never worked, hopefully it will be reasonably fast and graceful.

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Favorite Talks of 29C3

I’ve been watching the talks out of 29c3 as they become available online for the last couple days, and these are my favorites with comments. I’ve never come up with an excuse to actually go, but always find that it is the conference with the most things I am excited about every year, and end up watching more recorded sessions than I could have attended had I been present. The ones I picked below were both topics I found interesting and good presentations – there were a couple I hoped would be good but had talks that made me just give up and read the paper that I won’t mention here.

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I want my UNIX groups back

The breakage of permissions under recent PolKit/logind is flabbergasting. They have completely subverted UNIX groups/permissions in a difficult-to-unbreak way. And I get cheerful little update messages saying things like “You no longer need to be in the camera group to use cameras” like it’s a fucking feature (and they’re lying; they mean users logged in locally no longer need to be in the camera group – remote users still need it). If I want a user to have access to some hardware on a machine, I’ll give it permissions. If I don’t, I probably don’t for a reason. Let’s talk use cases: perhaps you would like to hide the camera from a kid’s user. Or you would like to check on something with the camera attached to your remote machine. Or work a music player via SSH. Or generally use the resources on the machine you bothered to log into remotely because why the fuck else would you have logged in there? Every one of those is now more complicated to accomplish. Adding a facility to enable/disable permissions for remote or local users might be reasonable, but just fucking breaking groups for a couple use cases no one uses is moronic. (Seriously, Fast User Switching keeps coming up as a rationale for breaking things. Has anyone, ever used fast user switching on one of the platforms that supports it? There are usually more computer-like-devices than people in a household now, it isn’t relevant.)

Can someone please come up with a straightforward way to just noop all the PolKit bullshit so I can have my UNIX box back from the FreeDesktop assholes?

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Shapeoko: Part 4

I got some more time to work on my Shapeoko over the last few days, and now have mostly correct 3-axis motion. As before, details under the fold.

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SC12: A Review in Schwag

All the Schwag I brought back from SC12, as packed.

I’ve made a habit of these posts after SC every year, and took the pictures, so away we go.
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Shapeoko: Part 3

Naturally, this post is a follow-on to Shapeoko: Part 1 and Shapeoko: Part 2. I’ve basically put the machine together now, and can move the X and Z axis around from the host computer, but still have to figure out belt attachments for the Y axis, and run the wiring in a sane way. I was holding up a microswitch to the various relevant spots for end-stops as I went, and everything but detecting the upper extreme of the Z axis should be easy. As in the last two posts, there is an assembly gallery under the fold.

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