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Re:Ask HN: What's the coolest physical thing you've made? by Tossrock on Monday August 07, 2023 @06:49PM (#37042011)
I made an art installation around a large circular LED array that can display patterns generated on a computer with shaders:

https://youtu.be/LBZls9jwa0g

(I designed all the mechanical hardware and the current electrical design & software used in the video, but other people have helped over the years, too)

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