#ifdef __AVR__
#include <avr/power.h>
#endif

int led1 = 11;
int led2 = 10;
int led3 = 9;

void setup() {
  Serial.begin(9600);
}

void loop() {

  if(Serial.available())
  {
    int incomingVal = Serial.read();
    Serial.print(incomingVal);
    if(incomingVal <= 85)
    {
      analogWrite(led1, incomingVal);
      analogWrite(led2, LOW);
      analogWrite(led3, LOW);
    }
    if(incomingVal > 85 && incomingVal<= 170)
    {
      analogWrite(led1, LOW);
      analogWrite(led2, incomingVal);
      analogWrite(led3, LOW);
    }
    if(incomingVal > 170 && incomingVal <= 255)
    {
      analogWrite(led1, LOW);
      analogWrite(led2, LOW);
      analogWrite(led3, incomingVal);
    }
    if(incomingVal < 0 || incomingVal > 255)
    {
      analogWrite(led1, LOW);
      analogWrite(led2, LOW);
      analogWrite(led3, LOW);
    }
  }
}