Broadcast Engineer at BellMedia, Computer history buff, compulsive deprecated, disparate hardware hoarder, R/C, robots, arduino, RF, and everything in between.
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A digital, 3D printed sundial whose precise holes cast a shadow displaying the current time

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https://www.youtube.com/watch?v=cCe7m7mhUxY

Julldozer created an amazingly clever digital sundial ("Cadran Solaire Numérique") that precomputes the angle of the sun throughout the day and uses those computations to make hundreds of precise holes calibrated to cast a shadow displaying the present time. (more…)

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tekvax
22 hours ago
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very very very cool!
Burlington, Ontario
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Just look at this Andy Warhol/Velvet Underground Electric Banana Record Player

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Just look at it.

(Thanks, James!)

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tekvax
23 hours ago
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Burlington, Ontario
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Chaos and the double dendulum

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Brian, a graduate student of Applied Mathematics at Columbia University, has a Tumblr called Fouriest Series where he posts his math and physics visualizations. His explanations are clearly written. He also provides the Mathematica code he used to create his animations. From his post about chaos and double pendulums:

Summarized by mathematician Edward Lorenz, "Chaos [is] when the present determines the future, but the approximate present does not approximately determine the future.“ There’s an important distinction to make between a chaotic system and a random system. Given the starting conditions, a chaotic system is entirely deterministic. A random system, on the other hand, is entirely non-deterministic, even when the starting conditions are known. That is, with enough information, the evolution of a chaotic system is entirely predictable, but in a random system there’s no amount of information that would be enough to predict the system’s evolution. The simulations above show two slightly different initial conditions for a double pendulum — an example of a chaotic system. In the left animation both pendulums begin horizontally, and in the right animation the red pendulum begins horizontally and the blue is rotated by 0.1 radians (≈ 5.73°) above the positive x-axis. In both simulations, all of the pendulums begin from rest.

[via]

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tekvax
23 hours ago
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Burlington, Ontario
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Bake: Cookie Monster bark

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Cookie-Monster-6

Melt chocolate into slabs, coat with blue candy-melts, and stud with broken oreos and edible googly eyes and voila: it's as though you blenderized a thousand Cookie Monsters, rolled them flat, and baked them. (more…)

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tekvax
23 hours ago
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Burlington, Ontario
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Nerdy Valentines to print and love

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2016-val2

Evil Mad Scientist Labs have released their latest set of nerdy Valentines ready for you to print, glue on cardstock, and use to win your true love's heart. (more…)

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tekvax
23 hours ago
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Burlington, Ontario
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Kikkerland Animal Multi-Tool

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The Kikkerland Animal Multi-Tool ($20 on Amazon) is cased in beechwood and has with a flathead screwdriver, Phillips head screwdriver, wire stripper, file, hole punch, bottle opener, and utility knife.

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tekvax
1 day ago
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udderly ridiculous!
Burlington, Ontario
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