RotaryEncoder(Analog input)

AnarogRotaryEncoder.ino

const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to

int sensorValue = 0;        // value read from the pot
int o,oo;

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600); 
}

void loop() {
  // read the analog in value:
  sensorValue = analogRead(analogInPin); 
  o = (sensorValue)>>6;  
  if ( o!=oo ) {
    Serial.println(o);   
    oo=o;
  }
  // delay(2);                     
}