diff --git a/app/build.gradle b/app/build.gradle
index 203a3f8..b1b35a6 100755
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -22,6 +22,7 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.google.android:flexbox:1.0.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
diff --git a/app/src/main/java/us/keiran/suitleds/MainActivity.java b/app/src/main/java/us/keiran/suitleds/MainActivity.java
index 51f9b1a..b3aa7fd 100755
--- a/app/src/main/java/us/keiran/suitleds/MainActivity.java
+++ b/app/src/main/java/us/keiran/suitleds/MainActivity.java
@@ -38,9 +38,6 @@ package us.keiran.suitleds;
         import android.content.IntentFilter;
         import android.content.ServiceConnection;
         import android.content.res.Configuration;
-        import android.media.Ringtone;
-        import android.media.RingtoneManager;
-        import android.net.Uri;
         import android.os.Build;
         import android.os.Bundle;
         import android.os.Handler;
@@ -48,12 +45,10 @@ package us.keiran.suitleds;
         import android.os.Message;
         import android.support.v4.content.LocalBroadcastManager;
         import android.util.Log;
-        import android.view.Gravity;
         import android.view.View;
         import android.widget.ArrayAdapter;
         import android.widget.Button;
         import android.widget.EditText;
-        import android.widget.LinearLayout;
         import android.widget.ListView;
         import android.widget.RadioGroup;
         import android.widget.TextView;
@@ -77,7 +72,8 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
     private BluetoothAdapter mBtAdapter = null;
     private ListView messageListView;
     private ArrayAdapter<String> listAdapter;
-    private Button btnConnectDisconnect, btnSend, btnRainbow;
+    private Button btnConnectDisconnect, btnSend, btnRainbow, btnFastest, btnFast, btnMed, btnSlow, btnSlowest;
+    private Button disableButtons[];
     private EditText edtMessage;
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -99,6 +95,22 @@ 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);
+        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[0] = btnSend;
+        disableButtons[1] = btnRainbow;
+        disableButtons[2] = btnFastest;
+        disableButtons[3] = btnFast;
+        disableButtons[4] = btnMed;
+        disableButtons[5] = btnSlow;
+        disableButtons[6] = btnSlowest;
+        for (Button btn: disableButtons){
+            btn.setEnabled(false);
+        }
         edtMessage = (EditText) findViewById(R.id.sendText);
         service_init();
 
@@ -158,27 +170,57 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
         btnRainbow.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                byte[] value;
-                try {
-                    //send data to service
-                    value = "pr".getBytes("UTF-8");
-                    mService.sendDataWithCRC(value);
-                    //Update the log with time stamp
-                    String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
-                    listAdapter.add("["+currentDateTimeString+"] TX: "+ "pr");
-                    messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
-                } catch (UnsupportedEncodingException e) {
-                    // TODO Auto-generated catch block
-                    e.printStackTrace();
-                }
-
+                sendCmd("pr");
             }
         });
 
+        btnFastest.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("s0");
+            }
+        });
+        btnFast.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("s20");
+            }
+        });
+        btnMed.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("s50");
+            }
+        });
+        btnSlow.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("s100");
+            }
+        });
+        btnSlowest.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sendCmd("s200");
+            }
+        });
         // Set initial UI state
 
     }
 
+    private void sendCmd(String cmdStr){
+        try {
+            byte[] value = cmdStr.getBytes("UTF-8");
+            mService.sendDataWithCRC(value);
+            String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
+            listAdapter.add("["+currentDateTimeString+"] TX: "+ cmdStr);
+            messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
+        } catch (UnsupportedEncodingException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+    }
+
     //UART service connected/disconnected
     private ServiceConnection mServiceConnection = new ServiceConnection() {
         public void onServiceConnected(ComponentName className, IBinder rawBinder) {
@@ -219,11 +261,11 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
                         String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
                         Log.d(TAG, "UART_CONNECT_MSG");
                         btnConnectDisconnect.setText("Disconnect");
-                        edtMessage.setEnabled(true);
-                        btnSend.setEnabled(true);
-                        btnRainbow.setEnabled(true);
+                        for (Button btn: disableButtons){
+                            btn.setEnabled(true);
+                        }
                         ((TextView) findViewById(R.id.deviceName)).setText(mDevice.getName()+ " - ready");
-                        listAdapter.add("["+currentDateTimeString+"] Connected to: "+ mDevice.getName());
+                        listAdapter.add("["+currentDateTimeString+"] Connected: "+ mDevice.getName());
                         messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
                         mState = UART_PROFILE_CONNECTED;
                     }
@@ -237,11 +279,11 @@ public class MainActivity extends Activity implements RadioGroup.OnCheckedChange
                         String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
                         Log.d(TAG, "UART_DISCONNECT_MSG");
                         btnConnectDisconnect.setText("Connect");
-                        edtMessage.setEnabled(false);
-                        btnSend.setEnabled(false);
-                        btnRainbow.setEnabled(false);
+                        for (Button btn: disableButtons){
+                            btn.setEnabled(false);
+                        }
                         ((TextView) findViewById(R.id.deviceName)).setText("Not Connected");
-                        listAdapter.add("["+currentDateTimeString+"] Disconnected from: "+ mDevice.getName());
+                        listAdapter.add("["+currentDateTimeString+"] Disconnected: "+ mDevice.getName());
                         mState = UART_PROFILE_DISCONNECTED;
                         mService.close();
                         //setUiState();
diff --git a/app/src/main/res/layout/main.xml b/app/src/main/res/layout/main.xml
index 2343939..42ccccd 100755
--- a/app/src/main/res/layout/main.xml
+++ b/app/src/main/res/layout/main.xml
@@ -18,6 +18,78 @@
             android:text="Connect" />
     </LinearLayout>
 
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Patterns"
+        android:textAlignment="center"
+        android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />
+
+
+    <RelativeLayout
+        android:id="@+id/patternRow"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
+
+        <Button
+            android:id="@+id/rainbowButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Rainbow" />
+    </RelativeLayout>
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Speed"
+        android:textAlignment="center"
+        android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />
+
+    <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/speedRow"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:flexWrap="wrap"
+        app:alignItems="stretch"
+        app:alignContent="stretch">
+
+        <Button
+            android:id="@+id/speedFastest"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Fastest" />
+        <Button
+            android:id="@+id/speedFast"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Fast" />
+        <Button
+            android:id="@+id/speedMed"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Med" />
+        <Button
+            android:id="@+id/speedSlow"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Slow" />
+        <Button
+            android:id="@+id/speedSlowest"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Slowest" />
+    </com.google.android.flexbox.FlexboxLayout>
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Log"
+        android:textAlignment="center"
+        android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />
+
     <LinearLayout
         android:id="@+id/linearLayout3"
         android:layout_width="match_parent"
@@ -40,7 +112,6 @@
                 android:layout_alignParentLeft="true"
                 android:layout_toLeftOf="@+id/sendButton"
                 android:ems="10"
-                android:enabled="false"
                 android:fontFamily="1"
                 android:lines="1"
                 android:maxLength="20"
@@ -53,8 +124,8 @@
                 android:layout_height="wrap_content"
                 android:layout_above="@+id/sendButton"
                 android:layout_alignParentLeft="true"
-                android:layout_alignParentTop="true" >
-            </ListView>
+                android:layout_alignParentTop="true"
+                android:background="@android:drawable/screen_background_light"></ListView>
 
             <Button
                 android:id="@+id/sendButton"
@@ -62,26 +133,11 @@
                 android:layout_height="wrap_content"
                 android:layout_alignParentBottom="true"
                 android:layout_alignParentRight="true"
-                android:enabled="false"
                 android:text="Send" />
 
         </RelativeLayout>
     </LinearLayout>
 
-    <RelativeLayout
-        android:id="@+id/patternRow"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="10dp"
-        android:layout_marginBottom="10dp">
-
-        <Button
-            android:id="@+id/rainbowButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="Rainbow" />
-    </RelativeLayout>
-
     <RelativeLayout
         android:id="@+id/deviceRow"
         android:layout_width="match_parent"