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 ...
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Your Car's Headlights Might Be Illegal in Every State – Here's Why
Most aftermarket LED and HID headlight conversions violate federal safety standards, risking $100-200 fines and accident ...
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