
[Zach] saw a stuffed animal that projected some simple stars on the ceiling. This gave him an idea that he could build a tiny star projector for his 3 month old daughter's room. The idea is to put an LED inside a ping pong ball with tiny holes and rotate it slowly. The electronics are fairly strait forward. He's using an MSP430 to control the servo and LED, allowing him to set different … [Read more...]



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