It runs on the same server software stack as the 4x4x4, but with a different microcontroller to download the cube states and display them (which requires some different timing logic, and different signal sending code to write to all four signal lines at once). From when I got all of the LEDs to when I finished it, it took around 3 months to make, however the actual time spent working on it was probably in the range of around 100 to 200 hours. The spacing between LEDs is 2cm (compared to the 4x4x4’s 4cm) meaning that the whole thing is around 16cm to a side. It has 512 LEDs, four separate signal cables coming from a single microcontroller, and 1824 solder joints. Since then, I’ve built a version that’s 8 times as large and twice as dense in each dimension, an 8x8x8 cube: A few months ago, I posted about my LED Cube, which was a 4x4x4 grid of 64 LEDs.
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