//CHALLENGE 2A//
//Change the rate of the fading in and out.//

//Use 2 (or more) LEDs – so that one fades in as the other one fades out.

//intialization//
int redLed = 3;
int yellowLed = 9;
int cyanLed = 10;
int brightness = 0;
int fadeAmount = 5;

//setup LED as output device//
void setup() {
  pinMode(redLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(cyanLed, OUTPUT);
}

void loop() {
  analogWrite(redLed, brightness);
  analogWrite(yellowLed, 255 - brightness);// Yellow LED fades in reverse
  analogWrite(cyanLed, 150 - brightness);

  brightness = brightness + fadeAmount;

  if (brightness <= 0 || brightness >= 255) {
    fadeAmount = -fadeAmount;
  }
  
  // Change this delay to adjust the fading speed
  delay(25);  // Faster fading
}