int CLK = 2;
int DT =5;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);
  
}
int last = HIGH;
void loop() {
  // put your main code here, to run repeatedly:
  int clkval = digitalRead(CLK);
  if(last != clkval){
    last = clkval;

   int dtval = digitalRead(DT);
    if(clkval == LOW && dtval == HIGH){
      Serial.println("Clockwise Rotation ►");
    }
    if(clkval == LOW && dtval == LOW){
      Serial.println("Anti-Clockwise Rotation ");
    }
      
  }

}