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This incredibly dangerous Christmas tree is actually a spinning holographic display.
Creator Sean Hodgins connected a chain of individually-addressable RGB LEDs to a Raspberry Pi 4 and a 1/2 horsepower motor to form the “digital, human-sized-blender” (via Hackaday).
It can be programmed to display graphics like bonfires or a Christmas tree (festive!) but requires a blast shield to protect users from its rapidly spinning blades (not so festive).
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