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YouTubeTheory to Thing
I Used an LED to Detect Another LED (And Built a Color Sensor)
Can an LED detect light like a solar panel? In this experiment, I test whether an LED can act as a light sensor and even a crude RGB color detector using an ESP32. By measuring voltage generated from different LEDs under light, we explore the photovoltaic effect, semiconductor bandgap theory, and why LEDs respond to specific wavelengths. I ...
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