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+--- Thread: [Wired] You Can Power a Calculator With Some LEDs (/Thread-Wired-You-Can-Power-a-Calculator-With-Some-LEDs)
[Wired] You Can Power a Calculator With Some LEDs - Wired Magazine - 2019-03-11
You Can Power a Calculator With Some LEDs
LEDs generate light, which is why they're in our screens. But if you instead shine a light on an LED, you can generate current to run a small device.
https://www.wired.com/story/you-can-power-a-calculator-with-some-leds