If you support me on Patreon at any point in December 2020 I will film your name on my xmas tree while I give you a thumbs-up of appreciation. Huge thanks to Eugénie von Tunzelmann for helping me out with this video. You can see more of Eugénie in my “General Relativity: Top 05 Mishaps [inc INTERSTELLAR]“ video. Thanks to Ben Sparks for helping out with the GeoGebra file. You can try an online version here: And of course thanks to Howard Carter for yet one more remix of the Stand-up Maths theme song. The main theme is on bandcamp: If there is enough demand we'll make a Christmas album. Here is my code on github (along with the 3D coordinates of all 500 LEDs on my tree). If you have a program you would like to see run on my tree, email me matt@ My prototype LEDs were type WS2801 and wired to as R
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