https://www.instructables.com/Better-LED-as-light-sensor/
Better LED As Light Sensor : 4 Steps (with Pictures) - Instructables
Better LED As Light Sensor: As a result of the questions from lekirst on this ible of my hand: LED-as-lightsensor-on-the-arduino/ and the cleaner code made by...
led as light sensorbetter4stepspictures