In the previous lecture, we created a simple circuit in which an LED blinks on and off. The Arduino sketch that drove the circuit simply wrote a HIGH or LOW value to the digital output pin 9, and the LED was turn on or off accordingly.
In this lecture I will show you how to make the LED not blink but fade on and off. We will be keeping the exact same circuit, and we'll only make a small change in the sketch to make this happen.
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