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Time delay door alarm
Posted: March 6th, 2010, 5:38pm MST by Caleb Kraft
Ever accidentally left your front door ajar and had a pet escape? [BlackCow] came up with a simple solution to this problem. The circuit is fairly rudimentary but a great example of using the basics to get the job done. Now, instead of having an alarm that sounds as soon as the door is open, he has [...]
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Strobeshnik, an HDD clock
Posted: March 6th, 2010, 4:37pm MST by Caleb Kraft
Strobeshnik is a somewhat different twist on the hard drive clocks we’ve seen in the past. Though still technically using a POV effect, the Strobeshnik displays the numerals instead of a line. By altering strobe timing of an LED behind a platter with the numbers cut into it, he can display whichever number he wants. [...]
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Lucid dreaming
Posted: March 6th, 2010, 8:08am MST by Jakob Griffith
When we saw [merkz] use of an Arduino to produce lucid dreaming we were quite shocked. Unlike typical setups that just flash a light through sleep, his system monitors eye movement through electrodes and is able to send the data to a computer for graphing and analyzing. The only problem being we couldn’t find a [...]