   
   // Zero all the flags.
   flags = 0;
-  /*
-  bitClear(flags, F_MOTION);
-  bitClear(flags, F_LEFT);
-  bitClear(flags, F_RIGHT);
-  bitClear(flags, F_ACTIVE_LEFT);
-  bitClear(flags, F_ACTIVE_RIGHT);
-  */
-  
-
-  //Serial.println(flags, BIN);
   
   pinMode(PIN_PIR, INPUT);
   

  Serial.println();
  */
  
  //Serial.print(0); Serial.print("="); Serial.print(cm[0]); Serial.print("cm "); Serial.println();
  
  pingBufferLeft.push(cm[0]);
  pingBufferRight.push(cm[1]);

    bitClear(flags, F_FIRST_CYCLE);
    // Clear the ping buffers.
    pingBufferLeft.zero();
    pingBufferRight.zero();
    return;
  }
  /*
