Moin Moin,
ich habe mal folgende Lib probiert: RotaryEncoder.h
Code:
#include <RotaryEncoder.h>

// Setup a RoraryEncoder for pins A2 and A3:
RotaryEncoder encoder(A2, A3);

void setup()
{
  Serial.begin(9600);
  Serial.println("SimplePollRotator example for the RotaryEncoder library.");

  // You may have to modify the next 2 lines if using other pins than A2 and A3
  PCICR |= (1 << PCIE1);    // This enables Pin Change Interrupt 1 that covers the Analog input pins or Port C.
  PCMSK1 |= (1 << PCINT10) | (1 << PCINT11);  // This enables the interrupt for pin 2 and 3 of Port C.
} // setup()



// The Interrupt Service Routine for Pin Change Interrupt 1
// This routine will only be called on any signal change on A2 and A3: exactly where we need to check.
ISR(PCINT1_vect) {
  encoder.tick(); // just call tick() to check the state.
}


long position  = -999;
void loop()
{
  static int pos = 0;

  int newPos = encoder.getPosition();
  if (pos != newPos) {

     if(newPos < position){
     Serial.print("Vor");
  }else{
   Serial.print("Zurueck");
}
    position = newPos;
 
    Serial.println();
    pos = newPos;

    if (newPos == 66)
      delay(6600);
  } // if
} // loop ()

// The End
Damit kann ich schon mal zuverlässig Vor und Zurück erkennen. Der Uno ist also schnell genug hab es nur scheiße programmiert....

werde es weiter versuchen Bild