diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index db0bbdb..6f43db5 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,8 +2,10 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="cdb932d9-7e58-4d94-93a9-e7b232ef17da" name="Default" comment="">
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/vcs.xml" afterPath="$PROJECT_DIR$/.idea/vcs.xml" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/sample/Controller.java" afterPath="$PROJECT_DIR$/src/sample/Controller.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/sample/Port.java" afterPath="$PROJECT_DIR$/src/sample/Port.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/sample/sample.fxml" afterPath="$PROJECT_DIR$/src/sample/sample.fxml" />
     </list>
     <ignored path="JavaFxApplication.iws" />
     <ignored path=".idea/workspace.xml" />
@@ -64,7 +66,7 @@
       <file leaf-file-name="Main.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/sample/Main.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="221">
+            <state relative-caret-position="0">
               <caret line="13" column="48" lean-forward="false" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
               <folding>
                 <element signature="imports" expanded="true" />
@@ -73,23 +75,25 @@
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="Controller.java" pinned="false" current-in-tab="true">
+      <file leaf-file-name="Controller.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/sample/Controller.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="69">
-              <caret line="85" column="25" lean-forward="false" selection-start-line="85" selection-start-column="25" selection-end-line="85" selection-end-column="25" />
+            <state relative-caret-position="-1088">
+              <caret line="23" column="0" lean-forward="true" selection-start-line="23" selection-start-column="0" selection-end-line="23" selection-end-column="0" />
               <folding>
                 <element signature="imports" expanded="true" />
+                <element signature="e#2337#2338#0" expanded="true" />
+                <element signature="e#2364#2365#0" expanded="true" />
               </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="Port.java" pinned="false" current-in-tab="false">
+      <file leaf-file-name="Port.java" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/sample/Port.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="120">
-              <caret line="115" column="0" lean-forward="false" selection-start-line="115" selection-start-column="0" selection-end-line="115" selection-end-column="0" />
+            <state relative-caret-position="136">
+              <caret line="43" column="123" lean-forward="false" selection-start-line="43" selection-start-column="123" selection-end-line="43" selection-end-column="123" />
               <folding>
                 <element signature="imports" expanded="true" />
               </folding>
@@ -97,19 +101,6 @@
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="sample.fxml" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/sample/sample.fxml">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="1020">
-              <caret line="60" column="104" lean-forward="false" selection-start-line="60" selection-start-column="38" selection-end-line="60" selection-end-column="104" />
-              <folding />
-            </state>
-          </provider>
-          <provider editor-type-id="JavaFX-Scene-Builder">
-            <state />
-          </provider>
-        </entry>
-      </file>
     </leaf>
   </component>
   <component name="FileTemplateManagerImpl">
@@ -137,8 +128,8 @@
       <list>
         <option value="$PROJECT_DIR$/src/sample/Main.java" />
         <option value="$PROJECT_DIR$/src/sample/sample.fxml" />
-        <option value="$PROJECT_DIR$/src/sample/Port.java" />
         <option value="$PROJECT_DIR$/src/sample/Controller.java" />
+        <option value="$PROJECT_DIR$/src/sample/Port.java" />
       </list>
     </option>
   </component>
@@ -168,9 +159,6 @@
     </navigator>
     <panes>
       <pane id="Scratches" />
-      <pane id="AndroidView" />
-      <pane id="PackagesPane" />
-      <pane id="Scope" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -197,6 +185,9 @@
           <select />
         </subPane>
       </pane>
+      <pane id="PackagesPane" />
+      <pane id="AndroidView" />
+      <pane id="Scope" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -369,18 +360,18 @@
     <layout>
       <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32840723" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
       <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
       <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32840723" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.0" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="8" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.2602118" sideWeight="0.6703755" order="0" side_tool="false" content_ui="combo" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.2677761" sideWeight="0.6703755" order="0" side_tool="false" content_ui="combo" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
@@ -410,7 +401,7 @@
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager>
-      <option name="time" value="12" />
+      <option name="time" value="13" />
     </breakpoint-manager>
     <watches-manager />
   </component>
@@ -419,6 +410,92 @@
     <option name="FILTER_TARGETS" value="false" />
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/src/sample/Main.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="153">
+          <caret line="13" column="48" lean-forward="false" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/Port.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1853">
+          <caret line="115" column="0" lean-forward="false" selection-start-line="115" selection-start-column="0" selection-end-line="115" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/sample.fxml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1020">
+          <caret line="60" column="104" lean-forward="false" selection-start-line="60" selection-start-column="38" selection-end-line="60" selection-end-column="104" />
+          <folding />
+        </state>
+      </provider>
+      <provider editor-type-id="JavaFX-Scene-Builder">
+        <state />
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/Controller.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1275">
+          <caret line="85" column="25" lean-forward="false" selection-start-line="85" selection-start-column="25" selection-end-line="85" selection-end-column="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/Main.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="153">
+          <caret line="13" column="48" lean-forward="false" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/Port.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1955">
+          <caret line="115" column="0" lean-forward="false" selection-start-line="115" selection-start-column="0" selection-end-line="115" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/sample.fxml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1020">
+          <caret line="60" column="104" lean-forward="false" selection-start-line="60" selection-start-column="38" selection-end-line="60" selection-end-column="104" />
+          <folding />
+        </state>
+      </provider>
+      <provider editor-type-id="JavaFX-Scene-Builder">
+        <state />
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/sample/Controller.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1445">
+          <caret line="85" column="25" lean-forward="false" selection-start-line="85" selection-start-column="25" selection-end-line="85" selection-end-column="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/sample/Main.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="221">
@@ -456,6 +533,8 @@
           <caret line="73" column="88" lean-forward="false" selection-start-line="73" selection-start-column="88" selection-end-line="73" selection-end-column="88" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -497,6 +576,8 @@
           <caret line="50" column="32" lean-forward="false" selection-start-line="50" selection-start-column="32" selection-end-line="50" selection-end-column="32" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -538,6 +619,8 @@
           <caret line="43" column="0" lean-forward="false" selection-start-line="43" selection-start-column="0" selection-end-line="43" selection-end-column="0" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -569,6 +652,8 @@
           <caret line="4" column="0" lean-forward="true" selection-start-line="4" selection-start-column="0" selection-end-line="4" selection-end-column="0" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -582,7 +667,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/sample/Main.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="221">
+        <state relative-caret-position="0">
           <caret line="13" column="48" lean-forward="false" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
           <folding>
             <element signature="imports" expanded="true" />
@@ -590,10 +675,60 @@
         </state>
       </provider>
     </entry>
+    <entry file="jar://$MAVEN_REPOSITORY$/com/github/purejavacomm/purejavacomm/1.0.2.RELEASE/purejavacomm-1.0.2.RELEASE.jar!/purejavacomm/SerialPort.class">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-534">
+          <caret line="11" column="22" lean-forward="false" selection-start-line="11" selection-start-column="22" selection-end-line="11" selection-end-column="22" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://C:/Program Files/Java/jdk-9.0.1/lib/src.zip!/javafx.graphics/javafx/scene/Node.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="17">
+          <caret line="8863" column="0" lean-forward="false" selection-start-line="8863" selection-start-column="0" selection-end-line="8863" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://C:/Program Files/Java/jdk-9.0.1/lib/src.zip!/javafx.controls/javafx/scene/control/Button.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="113">
+          <caret line="201" column="0" lean-forward="false" selection-start-line="201" selection-start-column="0" selection-end-line="201" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://C:/Program Files/Java/jdk-9.0.1/lib/src.zip!/javafx.graphics/javafx/scene/Scene.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="157">
+          <caret line="3917" column="0" lean-forward="false" selection-start-line="3917" selection-start-column="0" selection-end-line="3917" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://C:/Program Files/Java/jdk-9.0.1/lib/src.zip!/javafx.base/javafx/event/Event.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="425">
+          <caret line="198" column="0" lean-forward="false" selection-start-line="198" selection-start-column="0" selection-end-line="198" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://C:/Program Files/Java/jdk-9.0.1/lib/src.zip!/javafx.fxml/javafx/fxml/FXMLLoader.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="106">
+          <caret line="1670" column="0" lean-forward="false" selection-start-line="1670" selection-start-column="0" selection-end-line="1670" selection-end-column="0" />
+          <folding>
+            <element signature="e#67760#67761#0" expanded="false" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/sample/sample.fxml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1020">
-          <caret line="60" column="104" lean-forward="false" selection-start-line="60" selection-start-column="38" selection-end-line="60" selection-end-column="104" />
+        <state relative-caret-position="447">
+          <caret line="30" column="29" lean-forward="true" selection-start-line="30" selection-start-column="29" selection-end-line="30" selection-end-column="29" />
           <folding />
         </state>
       </provider>
@@ -601,20 +736,22 @@
         <state />
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/sample/Port.java">
+    <entry file="file://$PROJECT_DIR$/src/sample/Controller.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="120">
-          <caret line="115" column="0" lean-forward="false" selection-start-line="115" selection-start-column="0" selection-end-line="115" selection-end-column="0" />
+        <state relative-caret-position="-1088">
+          <caret line="23" column="0" lean-forward="true" selection-start-line="23" selection-start-column="0" selection-end-line="23" selection-end-column="0" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2337#2338#0" expanded="true" />
+            <element signature="e#2364#2365#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/sample/Controller.java">
+    <entry file="file://$PROJECT_DIR$/src/sample/Port.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="69">
-          <caret line="85" column="25" lean-forward="false" selection-start-line="85" selection-start-column="25" selection-end-line="85" selection-end-column="25" />
+        <state relative-caret-position="136">
+          <caret line="43" column="123" lean-forward="false" selection-start-line="43" selection-start-column="123" selection-end-line="43" selection-end-column="123" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
diff --git a/out/production/KCC_App/sample/Controller.class b/out/production/KCC_App/sample/Controller.class
index 2c00713..918b075 100644
Binary files a/out/production/KCC_App/sample/Controller.class and b/out/production/KCC_App/sample/Controller.class differ
diff --git a/out/production/KCC_App/sample/Port.class b/out/production/KCC_App/sample/Port.class
index 4f37b12..88c707d 100644
Binary files a/out/production/KCC_App/sample/Port.class and b/out/production/KCC_App/sample/Port.class differ
diff --git a/out/production/KCC_App/sample/sample.fxml b/out/production/KCC_App/sample/sample.fxml
index baa72a4..eaf84a8 100644
--- a/out/production/KCC_App/sample/sample.fxml
+++ b/out/production/KCC_App/sample/sample.fxml
@@ -17,7 +17,7 @@
    <bottom>
       <HBox prefHeight="4.0" prefWidth="600.0" BorderPane.alignment="CENTER">
          <children>
-            <Button fx:id="startBtn" mnemonicParsing="false" onAction="#onStartAction" text="START">
+            <Button fx:id="startBtn" mnemonicParsing="false" onAction="#onStartAction" prefHeight="27.0" prefWidth="60.0" text="START">
                <HBox.margin>
                   <Insets bottom="10.0" left="15.0" right="10.0" top="10.0" />
                </HBox.margin>
@@ -25,22 +25,22 @@
                   <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
                </padding>
             </Button>
-            <Button fx:id="stopBtn" mnemonicParsing="false" onAction="#onStopAction" text="STOP">
+            <Button fx:id="stopBtn" mnemonicParsing="false" onAction="#onStopAction" prefHeight="27.0" prefWidth="69.0" text="CLEAR">
                <HBox.margin>
-                  <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
+                  <Insets bottom="10.0" right="10.0" top="10.0" />
                </HBox.margin>
                <padding>
                   <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
                </padding>
             </Button>
-            <VBox prefHeight="47.0" prefWidth="173.0">
+            <VBox prefHeight="47.0" prefWidth="139.0">
                <children>
                   <Label alignment="CENTER" prefHeight="17.0" prefWidth="150.0" text="COM port:" textAlignment="CENTER">
                      <VBox.margin>
                         <Insets left="5.0" right="5.0" top="5.0" />
                      </VBox.margin>
                   </Label>
-                  <ComboBox fx:id="com" onAction="#onSelectCom" onMouseClicked="#onListPorts" prefHeight="25.0" prefWidth="152.0">
+                  <ComboBox fx:id="com" onAction="#onSelectCom" onMouseClicked="#onListPorts" prefHeight="25.0" prefWidth="121.0">
                      <VBox.margin>
                         <Insets bottom="5.0" left="5.0" right="5.0" />
                      </VBox.margin>
diff --git a/src/sample/Controller.java b/src/sample/Controller.java
index f048bc8..cde68ea 100644
--- a/src/sample/Controller.java
+++ b/src/sample/Controller.java
@@ -24,6 +24,10 @@ public class Controller {
 
     private String chosenCom;
 
+    private String units;
+
+    float frequency=200000000;
+
     private static volatile Controller ControllerInstance;
 
     public Controller(){
@@ -49,11 +53,12 @@ public void onStartAction(ActionEvent actionEvent) {
         if(null!=com.getSelectionModel().getSelectedItem()){
             String comPort = com.getSelectionModel().getSelectedItem();
             Port.getInstance().open(comPort);
-            Port.getInstance().startReceiving();
-            startBtn.setDisable(true);
-            stopBtn.setDisable(false);
-            com.setDisable(true);
-            label.setText("Click the STOP button to close the port and stop receiving data");
+            Port.getInstance().sendStart();
+            long impulses=Port.getInstance().readTime();
+            float time=calculateTime(impulses);
+            log("Estimated time is: "+time+" " +units +"\n");
+            Port.getInstance().sendStop();
+            Port.getInstance().close();
         }
         else{
             Alert alert = new Alert(Alert.AlertType.ERROR);
@@ -64,15 +69,28 @@ public void onStartAction(ActionEvent actionEvent) {
         }
     }
 
+    private float calculateTime(long impulses) {
+        float time=impulses/(16*frequency);
+        if (time>1000){
+            time=time/1000;
+            units="s";
+        }
+        else if(time<1){
+            time=time*1000;
+            units="us";
+        }
+        else if(time<0.001){
+            time=time*1000000;
+            units="ns";
+        }
+        else{
+            units="ms";
+        }
+        return time;
+    }
+
     public void onStopAction(ActionEvent actionEvent) {
-        Port.getInstance().close();
-        Port.getInstance().Stop=true;
-        log.appendText("Port has been closed...\n");
-        stopBtn.setDisable(true);
-        startBtn.setDisable(false);
-        com.setDisable(false);
-        Port.getInstance().StopAll=true;
-        label.setText("Click the START button to open the port and start receiving data");
+        log.clear();
     }
 
     public void log(String text) {
diff --git a/src/sample/Port.java b/src/sample/Port.java
index 19b2a22..3d9dac1 100644
--- a/src/sample/Port.java
+++ b/src/sample/Port.java
@@ -14,8 +14,6 @@ public class Port {
 
     boolean Stop = false;
 
-    boolean StopAll = false;
-
     private static volatile Port PortInstance;
 
     private ArrayList<Byte> inputData;
@@ -44,7 +42,6 @@ public boolean open(String portName) {
             CommPortIdentifier portNumber = CommPortIdentifier.getPortIdentifier(portName);
             serialPort = (SerialPort) portNumber.open("Time to Digital Converter", 1000);
             serialPort.setSerialPortParams(baudRate, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
-            Controller.getInstance().log("Port has been opened \n");
             Stop = false;
 
             return true;
@@ -74,23 +71,13 @@ public boolean close() {
         }
     }
 
-    public void startReceiving(){
-        Thread receivingThread = new Thread(() ->
-        {
-            Controller.getInstance().log("Waiting to receive data \n");
-
-            while (!StopAll){
-                try{
-                    long time=readTime();
-                    Controller.getInstance().log("Estimated time is: "+time+ "\n");
-                }
-                catch (Exception e){
-                    e.printStackTrace();
-                }
-            }
-        });
-        receivingThread.setName("TimeThread");
-        receivingThread.start();
+    public void sendStart(){
+        try{
+            serialPort.getOutputStream().write(66);
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     private byte readOneByte(){
@@ -105,57 +92,69 @@ private byte readOneByte(){
         }
         return oneByte;
     }
-    private long readTime() {
-        Stop=false;
+    public long readTime() {
         long time=0;
         long unsignedData=0;
         int numberOfBytes=0;
         byte data;
-        while (!Stop)
-        {
-            data = readOneByte();
-
-            if ( 0 > data )
+        while(time==0){
+            Stop=false;
+            while (!Stop)
             {
-                break;
-            }
-            if (data==1){
-                numberOfBytes++;
-                while(numberOfBytes!=0){
-                    switch(numberOfBytes){
-                        case 1:
-                            data=readOneByte();
-                            unsignedData=(data&0xFF);
-                            time=time|(unsignedData<<32);
-                            numberOfBytes++;
-                            break;
-                        case 2:
-                            data=readOneByte();
-                            unsignedData=(data&0xFF);
-                            time=time|(unsignedData<<24);
-                            numberOfBytes++;
-                            break;
-                        case 3:
-                            data=readOneByte();
-                            unsignedData=(data&0xFF);
-                            time=time|(unsignedData<<16);                            numberOfBytes++;
-                            break;
-                        case 4:
-                            data=readOneByte();
-                            unsignedData=(data&0xFF);
-                            time=time|(unsignedData<<8);                            numberOfBytes++;
-                            break;
-                        case 5:
-                            data=readOneByte();
-                            unsignedData=(data&0xFF);
-                            time=time|(unsignedData);
-                            numberOfBytes=0;
-                            Stop=true;
-                            break;
+                data = readOneByte();
+
+                if ( 0 > data )
+                {
+                    break;
+                }
+                if (data==1){
+                    numberOfBytes++;
+                    while(numberOfBytes!=0){
+                        switch(numberOfBytes){
+                            case 1:
+                                data=readOneByte();
+                                unsignedData=(data&0xFF);
+                                time=time|(unsignedData<<32);
+                                numberOfBytes++;
+                                break;
+                            case 2:
+                                data=readOneByte();
+                                unsignedData=(data&0xFF);
+                                time=time|(unsignedData<<24);
+                                numberOfBytes++;
+                                break;
+                            case 3:
+                                data=readOneByte();
+                                unsignedData=(data&0xFF);
+                                time=time|(unsignedData<<16);                            numberOfBytes++;
+                                break;
+                            case 4:
+                                data=readOneByte();
+                                unsignedData=(data&0xFF);
+                                time=time|(unsignedData<<8);                            numberOfBytes++;
+                                break;
+                            case 5:
+                                data=readOneByte();
+                                unsignedData=(data&0xFF);
+                                time=time|(unsignedData);
+                                numberOfBytes=0;
+                                Stop=true;
+                                break;
+                        }
                     }
                 }
             }
         }
+
         return time;
     }
+
+    public void sendStop() {
+        try{
+            serialPort.getOutputStream().write(0);
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
 }
diff --git a/src/sample/sample.fxml b/src/sample/sample.fxml
index baa72a4..eaf84a8 100644
--- a/src/sample/sample.fxml
+++ b/src/sample/sample.fxml
@@ -17,7 +17,7 @@
    <bottom>
       <HBox prefHeight="4.0" prefWidth="600.0" BorderPane.alignment="CENTER">
          <children>
-            <Button fx:id="startBtn" mnemonicParsing="false" onAction="#onStartAction" text="START">
+            <Button fx:id="startBtn" mnemonicParsing="false" onAction="#onStartAction" prefHeight="27.0" prefWidth="60.0" text="START">
                <HBox.margin>
                   <Insets bottom="10.0" left="15.0" right="10.0" top="10.0" />
                </HBox.margin>
@@ -25,22 +25,22 @@
                   <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
                </padding>
             </Button>
-            <Button fx:id="stopBtn" mnemonicParsing="false" onAction="#onStopAction" text="STOP">
+            <Button fx:id="stopBtn" mnemonicParsing="false" onAction="#onStopAction" prefHeight="27.0" prefWidth="69.0" text="CLEAR">
                <HBox.margin>
-                  <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
+                  <Insets bottom="10.0" right="10.0" top="10.0" />
                </HBox.margin>
                <padding>
                   <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
                </padding>
             </Button>
-            <VBox prefHeight="47.0" prefWidth="173.0">
+            <VBox prefHeight="47.0" prefWidth="139.0">
                <children>
                   <Label alignment="CENTER" prefHeight="17.0" prefWidth="150.0" text="COM port:" textAlignment="CENTER">
                      <VBox.margin>
                         <Insets left="5.0" right="5.0" top="5.0" />
                      </VBox.margin>
                   </Label>
-                  <ComboBox fx:id="com" onAction="#onSelectCom" onMouseClicked="#onListPorts" prefHeight="25.0" prefWidth="152.0">
+                  <ComboBox fx:id="com" onAction="#onSelectCom" onMouseClicked="#onListPorts" prefHeight="25.0" prefWidth="121.0">
                      <VBox.margin>
                         <Insets bottom="5.0" left="5.0" right="5.0" />
                      </VBox.margin>