Posts with «icosahedron» label

LED icosahedron shines for all the world to see

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.

Arduino Blog 25 Nov 14:25
arduino  featured  icosahedron  led icosahedron  led(s)  mega  

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

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 large 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 device 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.


Arduino Blog 28 Feb 20:27
arduino  featured  icosahedron  lamp(s)  nano