Manually controlled LED strips with EC11 rotary encoder

#include <Adafruit_NeoPixel.h>
#define PIN 11
#define NUMPIXELS 15
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define encoderPinA 3
#define encoderPinB 2
#define clearButton 8

int encoderPos = 4;
int lastReportedPos = 4;
static boolean rotating=false;

boolean A_set = false;
boolean B_set = false;
void setup() {
  delay(2000);
  pixels.begin();
  pixels.setBrightness(64);
  pixels.clear();

  //pixels.setPixelColor(1, pixels.Color(0, 150, 0));
  //pixels.show();
  pinMode(encoderPinA, INPUT_PULLUP);
  pinMode(encoderPinB, INPUT_PULLUP);
  pinMode(clearButton, INPUT_PULLUP);
  attachInterrupt(0, doEncoderA, CHANGE);
  attachInterrupt(1, doEncoderB, CHANGE);
  Serial.begin(9600);
  lastReportedPos = 5;
  encoderPos = 5;
}
void loop() {
  rotating = true;
  if (lastReportedPos != encoderPos) {
    Serial.print("Volume:");
    Serial.println(encoderPos, DEC);
    lastReportedPos = encoderPos;
  }
  if (digitalRead(clearButton) == LOW )  {
    encoderPos = 0;
  }
}

void doEncoderA(){
  if ( rotating ) delay (5);

  if( digitalRead(encoderPinA) != A_set ) {
    A_set = !A_set;
    if ( A_set && !B_set )
      encoderPos += 1;
      if (encoderPos > 14) { encoderPos = 14;}
       pixels.clear();
       pixels.setPixelColor(encoderPos, pixels.Color(0, 150, 0));
       pixels.show();
    rotating = false;
  }
}

void doEncoderB(){
  if ( rotating ) delay (5);
  if( digitalRead(encoderPinB) != B_set ) {
    B_set = !B_set;
    if( B_set && !A_set )
      encoderPos -= 1;
      if (encoderPos <0 ) { encoderPos = 0; }
       pixels.clear();
       pixels.setPixelColor(encoderPos, pixels.Color(0, 150, 0));
       pixels.show();
    rotating = false;
  }
}