diff --git a/src/ve/ucv/ciens/ccg/networkdata/MotorEvent.java b/src/ve/ucv/ciens/ccg/networkdata/MotorEvent.java
index 50f1c60..40761b6 100644
--- a/src/ve/ucv/ciens/ccg/networkdata/MotorEvent.java
+++ b/src/ve/ucv/ciens/ccg/networkdata/MotorEvent.java
@@ -5,7 +5,7 @@ import java.io.Serializable;
 public class MotorEvent implements Serializable{
 	private static final long serialVersionUID = 9989L;
 
-	public enum motor_t {NONE, MOTOR_A, MOTOR_B, MOTOR_C, MOTOR_AC, RECENTER};
+	public enum motor_t {NONE, MOTOR_A, MOTOR_B, MOTOR_C, MOTOR_AC, RECENTER, ROTATE_90};
 
 	private motor_t motor;
 	private byte power;
diff --git a/src/ve/ucv/ciens/ccg/nxtcam/network/NxtBTCommThread.java b/src/ve/ucv/ciens/ccg/nxtcam/network/NxtBTCommThread.java
index f8f4dff..281f96e 100644
--- a/src/ve/ucv/ciens/ccg/nxtcam/network/NxtBTCommThread.java
+++ b/src/ve/ucv/ciens/ccg/nxtcam/network/NxtBTCommThread.java
@@ -73,11 +73,16 @@ public class NxtBTCommThread extends Thread{
 					msg[0] |= (event.getMotor() == motor_t.MOTOR_C) ? MotorMasks.MOTOR_C : 0;
 					// Set the direction bit.
 					if(event.getPower() > 0) msg[0] |= MotorMasks.DIRECTION;
-					// Set the recenter bits.
+					// Set the recenter bit.
 					msg[0] |= (event.getMotor() == motor_t.RECENTER) ? MotorMasks.RECENTER : 0;
 					if((msg[0] & MotorMasks.RECENTER) > 0)
 						Logger.log_i(TAG, CLASS_NAME + ".run(): Recenter received."); 
 
+					// Set the rotate bit.
+					msg[0] |= (event.getMotor() == motor_t.ROTATE_90) ? MotorMasks.ROTATE_90 : 0;
+					if((msg[0] & MotorMasks.ROTATE_90) > 0)
+						Logger.log_i(TAG, CLASS_NAME + ".run(): Rotate 90 received."); 
+
 					// Set the power byte.
 					msg[1] = (byte)Math.abs(event.getPower());
 
diff --git a/src/ve/ucv/ciens/ccg/nxtcam/network/protocols/MotorMasks.java b/src/ve/ucv/ciens/ccg/nxtcam/network/protocols/MotorMasks.java
index 1c0bd61..af6db72 100644
--- a/src/ve/ucv/ciens/ccg/nxtcam/network/protocols/MotorMasks.java
+++ b/src/ve/ucv/ciens/ccg/nxtcam/network/protocols/MotorMasks.java
@@ -18,7 +18,8 @@ package ve.ucv.ciens.ccg.nxtcam.network.protocols;
 /**
  * <p>Bit masks used to code/decode the control instructions sent by NxtAR-cam to
  * NxtAR-bot.</p>
- * <p>Expansions 1-3 are currently unused.</p>
+ * 
+ * <p>Expansions 2-3 are currently unused.</p>
  */
 public abstract class MotorMasks {
 	public static final byte MOTOR_A     = (byte)0x01;
@@ -26,7 +27,7 @@ public abstract class MotorMasks {
 	public static final byte MOTOR_C     = (byte)0x04;
 	public static final byte DIRECTION   = (byte)0x08;
 	public static final byte RECENTER    = (byte)0x10;
-	public static final byte EXPANSION_1 = (byte)0x20;
-	public static final byte EXPANSION_2 = (byte)0x20;
-	public static final byte EXPANSION_3 = (byte)0x20;
+	public static final byte ROTATE_90   = (byte)0x20;
+	public static final byte EXPANSION_2 = (byte)0x40;
+	public static final byte EXPANSION_3 = (byte)0x80;
 }