30 Jan '17, 9am

World’s Smallest LED Cube – Again https://t.co/dw8bKcVA6y

World’s Smallest LED Cube – Again https://t.co/dw8bKcVA6y

There’s a new challenger on the block for the title of the “Worlds Smallest 4x4x4 RGB LED Cube “. At 13x13x36 mm, [nqtronix]’s Cube Pendant is significantly smaller than [HariFun’s] version , which measures in at about 17x17x17 mm just for the cube, plus the external electronics. It took about a year for [nqtronix] to claim this spot, and from reading the comments section, it seems [HariFun] isn’t complaining. The Cube Pendant is small enough to be used as a key fob, and [nqtronix] has managed to really cram a lot of electronics in it. The LED’s used are 0606 RGB’s which are 1.6mm square, although he did consider using 0404’s before scrubbing the idea. There’s many ways of driving 192 IO’s, but in this case, Charlieplexing seemed like the best solution, requiring 16 IO’s. Unlike [HariFun]’s build, this one is fully integrated, with micro-controller, battery and everything ...

Full article: http://hackaday.com/2017/01/30/worlds-smallest-led-cube-a...

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