diff --git a/QtArduino/QtArduino.pro b/QtArduino/QtArduino.pro
index 24f1d31..90c1184 100644
--- a/QtArduino/QtArduino.pro
+++ b/QtArduino/QtArduino.pro
@@ -19,3 +19,4 @@ SOURCES += main.cpp\
 HEADERS  += mainwindow.h
 
 FORMS    += mainwindow.ui
+DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0
diff --git a/QtArduino/mainwindow.cpp b/QtArduino/mainwindow.cpp
index 78291c0..b30ac3b 100644
--- a/QtArduino/mainwindow.cpp
+++ b/QtArduino/mainwindow.cpp
@@ -1,5 +1,6 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
+#include <QMessageBox>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
@@ -41,13 +42,20 @@ void MainWindow::onPacketReceived()
     stream >> digital >> analog;    //parse the packet
 
     //Change the color of the QLineEdit
-    if(digital == 1)
+    if(digital%2 == 1)
         ui->leDigital->setStyleSheet("QLineEdit { background-color: rgb(136, 195, 240) }");
     else
         ui->leDigital->setStyleSheet("QLineEdit { background-color: none }");
 
-    ui->barAnalog->setValue(analog); //slide the progress bar
+    ui->leDigital->setText(QString::number(digital));
 
+    if(digital <= 100)
+        ui->barAnalog->setValue(digital); //slide the progress bar
+    else
+        QMessageBox::critical(0 ,
+        "critical message" , "The value received is bigger than 100?",
+        QMessageBox::Ok | QMessageBox::Default ,
+        QMessageBox::Cancel | QMessageBox::Escape ,  0 );
 }
 
 void MainWindow::sendPacket()
diff --git a/QtArduino/mainwindow.ui b/QtArduino/mainwindow.ui
index 1793870..bc97686 100644
--- a/QtArduino/mainwindow.ui
+++ b/QtArduino/mainwindow.ui
@@ -44,7 +44,8 @@
       </property>
       <property name="font">
        <font>
-        <pointsize>1</pointsize>
+        <family>Adobe Arabic</family>
+        <pointsize>16</pointsize>
        </font>
       </property>
       <property name="cursor">
@@ -66,6 +67,33 @@
     </item>
     <item>
      <widget class="QSlider" name="hsAnalog">
+      <property name="enabled">
+       <bool>true</bool>
+      </property>
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="maximumSize">
+       <size>
+        <width>417</width>
+        <height>40</height>
+       </size>
+      </property>
+      <property name="sizeIncrement">
+       <size>
+        <width>0</width>
+        <height>5</height>
+       </size>
+      </property>
+      <property name="baseSize">
+       <size>
+        <width>0</width>
+        <height>5</height>
+       </size>
+      </property>
       <property name="maximum">
        <number>255</number>
       </property>
@@ -77,7 +105,7 @@
     <item>
      <widget class="QProgressBar" name="barAnalog">
       <property name="maximum">
-       <number>255</number>
+       <number>100</number>
       </property>
       <property name="value">
        <number>0</number>
@@ -92,7 +120,7 @@
      <x>0</x>
      <y>0</y>
      <width>435</width>
-     <height>22</height>
+     <height>23</height>
     </rect>
    </property>
   </widget>
diff --git a/README b/README
new file mode 100644
index 0000000..3c132db
--- /dev/null
+++ b/README
@@ -0,0 +1,9 @@
+QtArduino
+=========
+
+Basic Qt application and Arduino sketch used to teach others how to make them communicate over UDP.
+Learn how to use Qt to make an Android UDP app.
+
+Setup:
+  (1) Tested work: Use a router as wifi AP, while a Android phone and SocketTool are as wifi station.
+  (2) Not work: Use Android phone as the wifi AP, and SocketTool cannot send/recv message from the phone.
diff --git a/README.md b/README.md
deleted file mode 100644
index 3662188..0000000
--- a/README.md
+++ /dev/null
@@ -1,4 +0,0 @@
-QtArduino
-=========
-
-Basic Qt application and Arduino sketch used to teach others how to make them communicate over UDP.
\ No newline at end of file