There's something hypnotically satisfying about drawing the endless circular patterns with a Spirograph machineā€”unless you're hopelessly lazy. Then it's just another form of work you're trying to avoid, and you'll probably love PG52's latest creation. It's an autonomous Lego Spirograph machine powered by a single motor connected to an impressive four-speed gearbox. Its engineering is as much a piece of art as the spiral patterns it sketches.

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[BricTechnic via Make]