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Designing a Lego orrery
Designing a Lego orrery - Personal blog about game development, programming and making
I think an orrery is the perfect project to build out of Lego Technic parts as it makes for a cool display set and is functional at the same time. So to get the main arm to rotate once every 365.25 days, it needs to be connected to the crank using a gear sequence with a transmission ratio that is as close as possible to 365.25. But I'm excited to see that building block orreries are reaching a bigger audience and I hope that companies like CaDA and Lego will offer more elaborate designs in the future.
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