#include <Encoder.h> 
 
Encoder myEncoder; 
 
void setup() { 
  myEncoder.attach(2, 8)  // attaches an encoder to pins 2 and 8 
} 
 
void loop() { 
  if(myEncoder.attached()) { 
    myEncoder.write(90);  // position the encoder position to 90 
    myEncoder.detach(); 
  } 
}