A 12-year-old in California built a Braille printer from a $350 Lego robotics kit for a school science fair, at a time when the cheapest commercial machine cost about $2,000, and Intel invested in it

这是一条来自 Reddit 的热门内容：A 12-year-old in California built a Braille printer from a $350 Lego robotics kit for a school science fair, at a time when the cheapest commercial machine cost about $2,000, and Intel invested in it。原文链接可查看完整细节与讨论。

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