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31 items tagged "tracking"
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13:01
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Hack a Day
Check out this solar-powered Stirling engineĀ (translated). The build is part of a high school class and they packed in some really nice features. The first is the parabolic mirror which focuses the sun’s rays on the chamber of the engine. The heat is what makes it go, and the video after the breaks shows it [...]
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21:40
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SecDocs
Authors:
Tom Hargreaves Tags:
music Event:
Chaos Communication Congress 28th (28C3) 2011 Abstract: Tracking is so 1990s. Nowadays MP3 and other similar formats are overwhelmingly more popular. But is this really a step forward? A (very) brief history of computer music, where we are at now, and why I think people are headed in the wrong direction. And what we can do about it. Distributing music as recordings is terribly limiting to hackers and tinkerers. Music as source code makes dissection, modification and reuse easier. I will introduce a prototype next-generation tracker for the web, with the ultimate aim of being a way to not just create but also distribute music, and to collaborate on music creation: Github for music, if you will. As a music creation tool, trackers have been displaced in popularity because they are: Balky (arcane command+parameter syntax, steep learning curve, have slowly grown by accretion without regard to comprehensibility) Underpowered (many useful DSP effects are unavailable) As a music distribution tool, tracked formats have been displaced in popularity because they are: Not ubiquitous (people may not have playback software) Underspecified (hence behaviour differs across implementations) I believe all of these problems are soluble, and I'm going to talk about how. "modplayjs" (a working title which may well change by December) is a tracker written in javascript. While capable of playing existing module formats, it is primarily a playground for experimenting with shedding two decades of accumulated baggage, and is currently under heavy development.
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13:01
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Hack a Day
Early last year, [Edward] started work on an aircraft tracking system using components from old electronics he had sitting around the house. As you may or may not know, most modern aircraft continuously broadcast their current position over the 1090MHz band using the ADS-B protocol. [Edward] found that his old satellite receiver module was able [...]
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11:30
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Hack a Day
[Luis Cruz] is a Honduran High School student, and he built an amazing electrooculography system, and the writeup (PDF warning) of the project is one of the best we’ve seen. [Luis] goes through the theory of the electrooculogram – the human eye is polarized from front to back because of a negative charge in the [...]
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15:21
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Hack a Day
[Nicholas] built an active tracking system using RFID tags. The system’s tags operate in the 2.4 GHz band and are used to track either people or assets. The readers are on a mesh network and can triangulate the location of any tag for display on a map. His system is even set up to show [...]