diff --git a/app/src/main/java/us/keiran/suitleds/MainActivity.java b/app/src/main/java/us/keiran/suitleds/MainActivity.java
index b3aa7fd..47b5225 100755
--- a/app/src/main/java/us/keiran/suitleds/MainActivity.java
+++ b/app/src/main/java/us/keiran/suitleds/MainActivity.java
@@ -72,7 +72,7 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
     private BluetoothAdapter mBtAdapter = null;
     private ListView messageListView;
     private ArrayAdapter<String> listAdapter;
-    private Button btnConnectDisconnect, btnSend, btnRainbow, btnFastest, btnFast, btnMed, btnSlow, btnSlowest;
+    private Button btnConnectDisconnect, btnSend, btnOff, btnRainbow, btnFastest, btnFast, btnMed, btnSlow, btnSlowest;
     private Button disableButtons[];
     private EditText edtMessage;
     @Override
@@ -95,12 +95,13 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
         btnConnectDisconnect=(Button) findViewById(R.id.btn_select);
         btnSend=(Button) findViewById(R.id.sendButton);
         btnRainbow=findViewById(R.id.rainbowButton);
+        btnOff=findViewById(R.id.offButton);
         btnFastest=findViewById(R.id.speedFastest);
         btnFast=findViewById((R.id.speedFast));
         btnMed=findViewById((R.id.speedMed));
         btnSlow=findViewById((R.id.speedSlow));
         btnSlowest=findViewById(R.id.speedSlowest);
-        disableButtons = new Button[7];
+        disableButtons = new Button[8];
         disableButtons[0] = btnSend;
         disableButtons[1] = btnRainbow;
         disableButtons[2] = btnFastest;
@@ -108,6 +109,7 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
         disableButtons[4] = btnMed;
         disableButtons[5] = btnSlow;
         disableButtons[6] = btnSlowest;
+        disableButtons[7] = btnOff;
         for (Button btn: disableButtons){
             btn.setEnabled(false);
         }
@@ -173,7 +175,12 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
                 sendCmd("pr");
             }
         });
-
+        btnOff.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("po");
+            }
+        });
         btnFastest.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
diff --git a/app/src/main/res/layout/main.xml b/app/src/main/res/layout/main.xml
index 42ccccd..5bd17ba 100755
--- a/app/src/main/res/layout/main.xml
+++ b/app/src/main/res/layout/main.xml
@@ -27,17 +27,27 @@
         android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />
 
 
-    <RelativeLayout
+    <com.google.android.flexbox.FlexboxLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
         android:id="@+id/patternRow"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content">
+        android:layout_height="wrap_content"
+        app:flexWrap="wrap"
+        app:alignItems="stretch"
+        app:alignContent="stretch">
 
+        <Button
+            android:id="@+id/offButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Off" />
         <Button
             android:id="@+id/rainbowButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="Rainbow" />
-    </RelativeLayout>
+    </com.google.android.flexbox.FlexboxLayout>
 
     <TextView
         android:layout_width="match_parent"