Schlagwort: Icosahedron

  • LED icosahedron shines for all the world to see

    LED icosahedron shines for all the world to see

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    LED icosahedron shines for all the world to see

    Arduino Team — November 25th, 2019

    Convex regular icosahedrons contain 30 edges and 12 vertices. This makes for an interesting math problem, but as demonstrated by this project out of the LVL1 hackerspace in Louisville, Kentucky, its geometry also presents an excellent target for a massive number of LEDs.

    Their build, in fact, consists of 708 programmable LEDs arranged facing inward on the edges and doubled over on each vertex support. These supports lead to a central stainless steel ball, reflecting a massive amount of light to the surrounding area. 

    Everything is controlled by an Arduino Mega, along with an Uno-style prototyping shield, and power is provided by a massive 5V 60A supply unit.

    [youtube https://www.youtube.com/watch?v=LVYSG7BCyAE?feature=oembed&w=500&h=375]

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    Website: LINK

  • Have some geometric fun with a 3D-printed, light-up icosahedron

    Have some geometric fun with a 3D-printed, light-up icosahedron

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    Have some geometric fun with a 3D-printed, light-up icosahedron

    Arduino Team — February 28th, 2019

    Regular icosahedrons are 20-sided polyhedrons formed out of equilateral triangles. As such, the geometry behind making one is slightly complicated, but the results in the case of this light-up device appear to have been well worth it.

    The project’s write-up does go over how to actually model these faces in CAD but also provides the 3D print files if you’d like to skip to building your own. Two versions were made, including a super-sized playable die that illuminates RGBW LEDs under Arduino Nano control, and a second icosahedron large enough to be used as a lamp shade! 

    A demo/explanation is seen in the first clip below, along with a better look at the electronics in the breadboard video.

    [youtube https://www.youtube.com/watch?v=NI3bVzaE798?feature=oembed&w=500&h=281]

    [youtube https://www.youtube.com/watch?v=A0o8PaYtuv0?feature=oembed&w=500&h=281]

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    Website: LINK