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by 3dee
1882 days ago
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I once thought about building this, but it's much harder than you think. The data has to be processed very quickly. I believe you should think in terms of 0.3m groove per second. If you put a camera above the groove you also need something like a stepper motor to control the arm. But I believe the biggest problem is dust. A needle will move small particles out of the way, but a camera does not. This is also why laser turntables need 'clipping' filters. Dust will create all kinds of noise you don't want to hear. |
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How about designing an arm that used more than one laser 'needle'?