   // Send sensor data to serial
   if ( sensorReportingOn )
   {
-    // Nothing here yet
+    if( prevX - rotX > MPU_POSITIVE_THRESHOLD || prevX - rotX < MPU_NEGATIVE_THRESHOLD || 
+        prevY - rotY > MPU_POSITIVE_THRESHOLD || prevY - rotY < MPU_NEGATIVE_THRESHOLD || 
+        prevZ - rotZ > MPU_POSITIVE_THRESHOLD || prevZ - rotZ < MPU_NEGATIVE_THRESHOLD )
+    {
+      prevX = rotX;
+      prevY = rotY;
+      prevZ = rotZ;
+      Serial.write(MPU_X_PREFIX);
+      Serial.write(int(rotX));
+      Serial.write(MPU_Y_PREFIX);
+      Serial.write(int(rotY));
+      Serial.write(MPU_Z_PREFIX);
+      Serial.write(int(rotZ));
+    }
   }
 
   // Record flight data

      }
    }
  }
  
  // Update Servo positions
  throttle.write(pos1);
  rotatingFront.write(pos2);
  rotatingBack.write(pos3);
  leftRight.write(pos4);
  upDown.write(pos5);

  // Send status to Serial
  Serial.write(statusReport);

const char FLIGHT_REC_OFF_CONFIRM   = 'o';

//   MPU constants
const char MPU_POSITIVE_THRESHOLD   = 3;
const char MPU_NEGATIVE_THRESHOLD   = -3;


// INITIALIZE
