SunFounder R3, Руководство пользователя

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SunFounder uno-and-mega-kit
void color ( unsigned char red, unsigned char green, unsigned char blue)
// the color generating function
{
analogWrite (redPin, red);
analogWrite (greenPin, green);
analogWrite (bluePin, blue);
}
Define three unsigned char variables, red, green and blue. Write their values to redPin , greenPin and bluePin . For
example, color(128,0,128) is to write 128 to redPin , 0 to greenPin and 128 to bluePin . Then the result is the LED
flashing purple.
analogWrite() : Writes an analog value (PWM wave) to a pin. It has nothing to do with an analog pin, but is just for
PWM pins. You do not need to call the pinMode() to set the pin as output before calling analogWrite() .
6.8 Lesson 8 Controlling an LED by Potentiometer
6.8.1 Introduction
In this lesson, let’s see how to change the luminance of an LED by a potentiometer, and receive the data of the
potentiometer in Serial Monitor to see its value change.
114 Chapter 6. For Mega2560 User