How to use LEDs to detect light
111 by chrisbennet | 47 comments on Hacker News.
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By EMILY COCHRANE and ALAN BLINDER from NYT U.S. https://ift.tt/2RdeOe0
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Robinhood Is Set to Raise at Least $200 Million in New Funding 139 by jason_zig | 150 comments on Hacker News.
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