Sphere gears


• Red gears: 20 teeth, 12 count
• Blue gears: 24 teeth, 20 count
• Yellow gears: 13 teeth, 60 count.

Red gears aligned with icosahedron vertices. Blue gears aligned with dodecahedron vertices. The central rotation axes are aligned with the vertices of a frequency 3v, class-I geodesic tessellation of an icosahedron.

Generalized to higher dimensions: Ball bearings in a hypersphere. That is some mad science.

These guys are selling a 3D-printed version. It's kind of blobby.

Kenneth Snelson: I'm pretty sure what I'm seeing here is part of the internal mechanism of the Lament Configuration.

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"The things that will last on the internet are not owned."


My blog isn't part of a system where its usefulness is just a hook to get me to use it.

My blog's older than Twitter and Facebook, and it will outlive them. It has seen Flickr explode and then fade. It's seen Google Wave and Google Reader come and go, and it'll still be here as Google Plus fades. When Medium and Tumblr are gone, my blog will be here.

The things that will last on the internet are not owned. Plain old websites, blogs, RSS, irc, email.

Previously, previously, previously.

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DA rejects charges against sheriff's deputy who killed cyclist

In other news, water remains wet:

A Los Angeles County sheriff's deputy who was typing on a patrol car computer when he hit and killed a bicyclist in Calabasas last year will not be prosecuted, the Los Angeles County district attorney's office said in a statement Thursday.

In declining to bring criminal charges against Deputy Andrew Francis Wood, prosecutors noted that a state law banning drivers from using wireless electronic devices while driving exempts police officers and other emergency professionals. [...]

Wood initially said that Olin had swerved from the bicycle lane on Mullholland Highway into the path of his patrol car, the statement said. But the district attorney's office concluded that "evidence examined in this investigation shows that this tragic collision occurred as a result of Deputy Wood crossing into the bicycle lane."

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It's made of babies


Previously, previously, previously, previously, previously, previously, previously, previously.

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Testing the 3' passing law

Beginning next month, California law will require that cars stay at least three feet away from cyclists when passing on the roads.

I attached this driveway reflector to the basket of my bike with some zip ties. I chose this flexible plastic stick with reflector because it was 3 feet long and it should be visible, but it should also not kill me if a car decides to drive right through it. [...]

I felt safer because of this extra 3-foot forced space. I was tucked right up against the line of parked cars.

So he's saying "I felt safer" but he's also saying "I was in the door zone the whole time".

Most traffic lanes are about 10-feet wide. If you have 3 feet of space on your left, and, ideally, at least 3 feet of space on your right in order to avoid getting doored, plus probably at least around 18 inches for you and your bike to exist, you end up with at 7.5 feet. Let's call it 8 feet. That's about how wide the lanes are in San Francisco.

If people are actually going to respect and enforce this law it'll change the way we get around in dense urban areas. Either bikes will have to act like cars, or we'll have to get full bike lanes everywhere.

The only way to have 3' on the left and no door-zone on the right is to take the entire lane all the time.

The embarrassment I felt while cruising around the city with a stick attached to my my front basket was worth it: I didn't get clipped by a car once. Let's just hope it won't come down to cyclists having to ride around with 3-foot sticks on their bikes.

The same effect could probably be observed by biking while wearing a clown suit.

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Webcast video help needed

Lazyweb, I need:

1: A replacement for Justin.tv that isn't Streamup.com.

2: A cheap SDI Frame Synchronizer.

Can you help?


  1. Since Justin.tv shut down, Streamup is the only replacement site that I've found for our webcast video that meets the following specifications:

    1. Accepts RTMP video streams 24/7;
    2. Has a web-page-embeddable player;
    3. Does not spam my viewers with ads;
    4. Is free to both me and my viewers.

    However, they fail to meet the implicit specification, "actually works."

    Their embedded Flash player sometimes makes all three browsers just go catatonic-hypnowheel for minutes at a time; on one of my machines it will just never load at all, but on another it will, in the same browser; and since they made some "improvements" recently, FMLECmd won't connect to their server at all if the input source is digital instead of analog. Though the FMLE GUI will connect. Which is a whole lot of WTF.

    I've tried to contact them via their support email and Twitter and a couple of times with no response. After my last blog post, I got a glad-handing response from a marketing guy, but after I replied with, "Yes, here are my very specific technical problems"... crickets.

    So, FMLECmd is junk, but it used to work with Justin, and it worked with Streamup as of just-before-their-upgrade. Presumably there's a way to do RTMP streaming on MacOS with ffmpeg, but I don't know it.

  2. A Frame Synchronizer takes an SDI HD stream that has inconsistent, variable sync and outputs a single, stable SDI or HDMI stream. I would like to spend closer to a hundred bucks on this than two grand, which seems to be what these things retail for. We found a cheap Hotronic AY86 on eBay which sounded like it would do the trick, but it arrived DOA. Any suggestions?

    We need this because our new SDI video cameras are not genlocked, so when our SDI matrix switcher changes inputs, the sync changes. This causes downstream HDMI devices, like the TVs in the restaurant, to go blank for 8-10 seconds and renegotiate, like they do when you un-plug the cable, every time the switcher switches. Because HDMI is awesome.

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  • Previously