If you had an array of high power addressable LEDs, how would you project them onto a wall? Perhaps you’d use a Fresnel lens, or maybe an individual lens on the top of each. [Joo] faced this problem ...
David Murphy was formerly the Senior Technology Editor at Lifehacker. Across his 15+ year career in technology journalism, his reviews and how-to guides have appeared in The New York Times, The Wall ...
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