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by JohnFen
997 days ago
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It's actually not that hard to use LEDs in this way. I think it's not done a lot because in applications that need a light sensor, a purpose-built light sensor works a whole lot better, and it's rare that space is such a premium that having one is an issue. Glasses may be a use case where space is at a premium, though, so it could make sense there. |
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