#define reclk 3 //clock connected to pin 13
#define redata 4 //redata connected to pin 14
float recounter = 0; //recounter variable
int state;  //restate variable to sense movement
int laststate; //variable to compare with previous state
float finalval;

void setup() {
  // put your setup code here, to run once:

  //setup input pin modes
pinMode(reclk, INPUT); 
pinMode(redata, INPUT);
//begin serial at 9600 baud rate
//measure initial state
laststate = digitalRead(reclk);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
//read current state then compare with previous state to see if there is movement
state = digitalRead(reclk);
if (state != laststate)
{
  if(digitalRead(redata) != state) //clockwise vs anticlockwise
  {
  recounter = recounter+0.865;
  finalval=recounter/100;
  }
  else
  {
   recounter=recounter-0.865;
  finalval=recounter/100;
  }
  }
//save current state as previous state
laststate= state;
Serial.print(finalval);

Serial.println(" Meters");
}