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Hackaday links: August 29, 2010
Hotel room door lock picking Here’s further proof that you should never leave anything of value in your hotel room. We’re not worried about someone getting in while the room is occupied. But these...
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Direct Digital Synthesis (DDS) Explained by [Bil Herd]
One of the acronyms you may hear thrown around is DDS which stands for Direct Digital Synthesis. DDS can be as simple as taking a digital value — a collection of ones and zeroes — and processing it...
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Retrotechtacular: The Trautonium Was Elemental to Electronic Music
Electrical engineer and music enthusiast [Freidrich Trautwein] was dissatisfied. He believed that the equal tempered scale of the piano limited a player’s room for expression. And so in 1930,...
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The Crystal (Testing) Method
It used to be any good electronics experimenter had a bag full of crystals because you never knew what frequency you might need. These days, you are likely to have far fewer because you usually just...
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This Frequency Generator Knows How To Get Down
What kind of clever things could you do with a signal that had a period of 2 hours? Or 20? Any ideas? No seriously, tell us. Because [Joseph Eoff] has come up with a way to produce incredibly low...
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