I was obsessed with the C64 demo We Are New by Fairlight . Their disk loading animation in that demo is a panda holding a gun rotating in 3D. I decided to replicate it for a Very Large LED Array.
From a video of the demo I redrew the panda from the front, back, left, and right perspectives. Then in Processing I wrote a very simple voxel rendering engine and used the images to generate the voxels for the panda. I had written a library for the LED array to be able to stream it graphics over UDP so once I had the panda effect done I used that to get it up on the array.
Done while in undergrad